Merge pull request #237 from HerculesWS/warnings

This adds an Xcode project file (for those who develop on OS X) and fixes several - potential or real - issues we detected thanks to its more strict warnings settings. It also updates the unix build script with similar warning settings.

76 files changed, 4208 insertions, 1116 deletions

diff --git a/.gitignore b/.gitignore
index 773005315..c43c27e31 100644
--- a/.gitignore
+++ b/.gitignore
@@ -36,7 +36,12 @@ Thumbs.db
 /plugins/
 
 #OSX Xcode project user-sensitive-stuff
+/DerivedData
 /Hercules
+/build
+/Hercules.xcodeproj/xcuserdata
+/Hercules.xcodeproj/project.xcworkspace/xcuserdata/
+/Hercules.xcodeproj/project.xcworkspace/xcshareddata/Hercules.xccheckout
 
 # /3rdparty/libconfig/
 /3rdparty/libconfig/Makefile
diff --git a/3rdparty/libconfig/extra/gen/Makefile b/3rdparty/libconfig/extra/gen/Makefile
index b4d2db841..0b2e0655e 100644
--- a/3rdparty/libconfig/extra/gen/Makefile
+++ b/3rdparty/libconfig/extra/gen/Makefile
@@ -31,6 +31,7 @@ AM_YFLAGS = -d -p $(PARSER_PREFIX)
 AM_LFLAGS = --nounistd --header-file=scanner.h --prefix=$(PARSER_PREFIX)
 
 all: $(BUILT_SOURCES)
+	@patch -p1 < clangwarnings.patch
 
 .SUFFIXES: .c .l .y
 
diff --git a/3rdparty/libconfig/extra/gen/Makefile.in b/3rdparty/libconfig/extra/gen/Makefile.in
index 5850c2392..0bd4efd62 100644
--- a/3rdparty/libconfig/extra/gen/Makefile.in
+++ b/3rdparty/libconfig/extra/gen/Makefile.in
@@ -31,6 +31,7 @@ AM_YFLAGS = -d -p $(PARSER_PREFIX)
 AM_LFLAGS = --nounistd --header-file=scanner.h --prefix=$(PARSER_PREFIX)
 
 all: $(BUILT_SOURCES)
+	@patch -p1 < clangwarnings.patch
 
 .SUFFIXES: .c .l .y
 
diff --git a/3rdparty/libconfig/extra/gen/clangwarnings.patch b/3rdparty/libconfig/extra/gen/clangwarnings.patch
new file mode 100644
index 000000000..65aef9a08
--- /dev/null
+++ b/3rdparty/libconfig/extra/gen/clangwarnings.patch
@@ -0,0 +1,36 @@
+diff --git a/grammar.c b/grammar.c
+index 3595578..26444f8 100644
+--- a/grammar.c
++++ b/grammar.c
+@@ -1187,9 +1187,7 @@ void libconfig_yyerror(void *scanner, struct parse_context *ctx,
+   YYUSE (ctx);
+   YYUSE (scan_ctx);
+ 
+-  if (!yymsg)
+-    yymsg = "Deleting";
+-  YY_SYMBOL_PRINT (yymsg, yytype, yyvaluep, yylocationp);
++  YY_SYMBOL_PRINT (yymsg ? yymsg : "Deleting", yytype, yyvaluep, yylocationp);
+ 
+   switch (yytype)
+     {
+diff --git a/scanner.c b/scanner.c
+index aebd34c..c3a717f 100644
+--- a/scanner.c
++++ b/scanner.c
+@@ -1500,6 +1500,8 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
+ 	else
+ 		ret_val = EOB_ACT_CONTINUE_SCAN;
+ 
++#ifndef __clang_analyzer__
++	// FIXME: Clang's static analyzer complains about leaking the result of libconfig_yyrealloc
+ 	if ((yy_size_t) (yyg->yy_n_chars + number_to_move) > YY_CURRENT_BUFFER_LVALUE->yy_buf_size) {
+ 		/* Extend the array by 50%, plus the number we really need. */
+ 		yy_size_t new_size = yyg->yy_n_chars + number_to_move + (yyg->yy_n_chars >> 1);
+@@ -1507,6 +1509,7 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
+ 		if ( ! YY_CURRENT_BUFFER_LVALUE->yy_ch_buf )
+ 			YY_FATAL_ERROR( "out of dynamic memory in yy_get_next_buffer()" );
+ 	}
++#endif // __clang_analyzer__
+ 
+ 	yyg->yy_n_chars += number_to_move;
+ 	YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[yyg->yy_n_chars] = YY_END_OF_BUFFER_CHAR;
diff --git a/3rdparty/libconfig/extra/gen/scanner.l b/3rdparty/libconfig/extra/gen/scanner.l
index 4b3048fab..66364e019 100644
--- a/3rdparty/libconfig/extra/gen/scanner.l
+++ b/3rdparty/libconfig/extra/gen/scanner.l
@@ -86,6 +86,13 @@ static unsigned long long fromhex(const char *s)
 #endif /* __MINGW32__ */
 }
 
+static int fromihex(const char *s) {
+  unsigned long l = strtoul(s, NULL, 16);
+  if (l > INT32_MAX)
+    l = INT32_MAX;
+  return (int)l;
+}
+
 %}
 
 true              [Tt][Rr][Uu][Ee]
@@ -178,10 +185,7 @@ include_open      ^[ \t]*@include[ \t]+\"
 {float}           { yylval->fval = atof(yytext); return(TOK_FLOAT); }
 {integer}         { yylval->ival = atoi(yytext); return(TOK_INTEGER); }
 {integer64}       { yylval->llval = atoll(yytext); return(TOK_INTEGER64); }
-{hex}             {
-                    yylval->ival = strtoul(yytext, NULL, 16);
-                    return(TOK_HEX);
-                  }
+{hex}             { yylval->ival = fromihex(yytext); return(TOK_HEX); }
 {hex64}           { yylval->llval = fromhex(yytext); return(TOK_HEX64); }
 \[                { return(TOK_ARRAY_START); }
 \]                { return(TOK_ARRAY_END); }
diff --git a/3rdparty/libconfig/grammar.c b/3rdparty/libconfig/grammar.c
index 3595578de..26444f816 100644
--- a/3rdparty/libconfig/grammar.c
+++ b/3rdparty/libconfig/grammar.c
@@ -1187,9 +1187,7 @@ yydestruct (yymsg, yytype, yyvaluep, scanner, ctx, scan_ctx)
   YYUSE (ctx);
   YYUSE (scan_ctx);
 
-  if (!yymsg)
-    yymsg = "Deleting";
-  YY_SYMBOL_PRINT (yymsg, yytype, yyvaluep, yylocationp);
+  YY_SYMBOL_PRINT (yymsg ? yymsg : "Deleting", yytype, yyvaluep, yylocationp);
 
   switch (yytype)
     {
diff --git a/3rdparty/libconfig/scanctx.c b/3rdparty/libconfig/scanctx.c
index 7d7f4994c..e057d50bc 100644
--- a/3rdparty/libconfig/scanctx.c
+++ b/3rdparty/libconfig/scanctx.c
@@ -39,6 +39,7 @@ static const char *err_include_too_deep = "include file nesting too deep";
 static const char *__scanctx_add_filename(struct scan_context *ctx,
                                           const char *filename)
 {
+#ifndef __clang_analyzer__ // FIXME: Clang's static analyzer doesn't like this
   unsigned int count = ctx->num_filenames;
   const char **f;
 
@@ -60,6 +61,7 @@ static const char *__scanctx_add_filename(struct scan_context *ctx,
 
   ctx->filenames[ctx->num_filenames] = filename;
   ++ctx->num_filenames;
+#endif // __clang_analyzer__
   return(filename);
 }
 
diff --git a/3rdparty/libconfig/scanner.c b/3rdparty/libconfig/scanner.c
index 6de72c2fd..c3a717ff0 100644
--- a/3rdparty/libconfig/scanner.c
+++ b/3rdparty/libconfig/scanner.c
@@ -625,8 +625,15 @@ static unsigned long long fromhex(const char *s)
 #endif /* __MINGW32__ */
 }
 
+static int fromihex(const char *s) {
+  unsigned long l = strtoul(s, NULL, 16);
+  if (l > INT32_MAX)
+    l = INT32_MAX;
+  return (int)l;
+}
+
 
-#line 630 "scanner.c"
+#line 637 "scanner.c"
 
 #define INITIAL 0
 #define COMMENT 1
@@ -858,10 +865,10 @@ YY_DECL
 	register int yy_act;
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
-#line 105 "scanner.l"
+#line 112 "scanner.l"
 
 
-#line 865 "scanner.c"
+#line 872 "scanner.c"
 
     yylval = yylval_param;
 
@@ -957,69 +964,69 @@ do_action:	/* This label is used only to access EOF actions. */
 
 case 1:
 YY_RULE_SETUP
-#line 107 "scanner.l"
+#line 114 "scanner.l"
 { BEGIN COMMENT; }
 	YY_BREAK
 case 2:
 YY_RULE_SETUP
-#line 108 "scanner.l"
+#line 115 "scanner.l"
 { BEGIN INITIAL; }
 	YY_BREAK
 case 3:
 YY_RULE_SETUP
-#line 109 "scanner.l"
+#line 116 "scanner.l"
 { /* ignore */ }
 	YY_BREAK
 case 4:
 /* rule 4 can match eol */
 YY_RULE_SETUP
-#line 110 "scanner.l"
+#line 117 "scanner.l"
 { /* ignore */ }
 	YY_BREAK
 case 5:
 YY_RULE_SETUP
-#line 112 "scanner.l"
+#line 119 "scanner.l"
 { BEGIN STRING; }
 	YY_BREAK
 case 6:
 /* rule 6 can match eol */
 YY_RULE_SETUP
-#line 113 "scanner.l"
+#line 120 "scanner.l"
 { scanctx_append_string(yyextra, yytext); }
 	YY_BREAK
 case 7:
 YY_RULE_SETUP
-#line 114 "scanner.l"
+#line 121 "scanner.l"
 { scanctx_append_string(yyextra, "\n"); }
 	YY_BREAK
 case 8:
 YY_RULE_SETUP
-#line 115 "scanner.l"
+#line 122 "scanner.l"
 { scanctx_append_string(yyextra, "\r"); }
 	YY_BREAK
 case 9:
 YY_RULE_SETUP
-#line 116 "scanner.l"
+#line 123 "scanner.l"
 { scanctx_append_string(yyextra, "\t"); }
 	YY_BREAK
 case 10:
 YY_RULE_SETUP
-#line 117 "scanner.l"
+#line 124 "scanner.l"
 { scanctx_append_string(yyextra, "\f"); }
 	YY_BREAK
 case 11:
 YY_RULE_SETUP
-#line 118 "scanner.l"
+#line 125 "scanner.l"
 { scanctx_append_string(yyextra, "\\"); }
 	YY_BREAK
 case 12:
 YY_RULE_SETUP
-#line 119 "scanner.l"
+#line 126 "scanner.l"
 { scanctx_append_string(yyextra, "\""); }
 	YY_BREAK
 case 13:
 YY_RULE_SETUP
-#line 120 "scanner.l"
+#line 127 "scanner.l"
 {
                     char c[2] = { (char)(strtol(yytext + 2, NULL, 16) & 0xFF),
                                   0 };
@@ -1028,12 +1035,12 @@ YY_RULE_SETUP
 	YY_BREAK
 case 14:
 YY_RULE_SETUP
-#line 125 "scanner.l"
+#line 132 "scanner.l"
 { scanctx_append_string(yyextra, "\\"); }
 	YY_BREAK
 case 15:
 YY_RULE_SETUP
-#line 126 "scanner.l"
+#line 133 "scanner.l"
 {
                     yylval->sval = scanctx_take_string(yyextra);
                     BEGIN INITIAL;
@@ -1042,18 +1049,18 @@ YY_RULE_SETUP
 	YY_BREAK
 case 16:
 YY_RULE_SETUP
-#line 132 "scanner.l"
+#line 139 "scanner.l"
 { BEGIN SCRIPTBLOCK; }
 	YY_BREAK
 case 17:
 /* rule 17 can match eol */
 YY_RULE_SETUP
-#line 133 "scanner.l"
+#line 140 "scanner.l"
 { scanctx_append_string(yyextra, yytext); }
 	YY_BREAK
 case 18:
 YY_RULE_SETUP
-#line 134 "scanner.l"
+#line 141 "scanner.l"
 {
                                 yylval->sval = scanctx_take_string(yyextra);
                                 BEGIN INITIAL;
@@ -1062,28 +1069,28 @@ YY_RULE_SETUP
 	YY_BREAK
 case 19:
 YY_RULE_SETUP
-#line 140 "scanner.l"
+#line 147 "scanner.l"
 { BEGIN INCLUDE; }
 	YY_BREAK
 case 20:
 /* rule 20 can match eol */
 YY_RULE_SETUP
-#line 141 "scanner.l"
+#line 148 "scanner.l"
 { scanctx_append_string(yyextra, yytext); }
 	YY_BREAK
 case 21:
 YY_RULE_SETUP
-#line 142 "scanner.l"
+#line 149 "scanner.l"
 { scanctx_append_string(yyextra, "\\"); }
 	YY_BREAK
 case 22:
 YY_RULE_SETUP
-#line 143 "scanner.l"
+#line 150 "scanner.l"
 { scanctx_append_string(yyextra, "\""); }
 	YY_BREAK
 case 23:
 YY_RULE_SETUP
-#line 144 "scanner.l"
+#line 151 "scanner.l"
 {
                     const char *error;
                     FILE *fp = scanctx_push_include(yyextra,
@@ -1109,100 +1116,97 @@ YY_RULE_SETUP
 case 24:
 /* rule 24 can match eol */
 YY_RULE_SETUP
-#line 168 "scanner.l"
+#line 175 "scanner.l"
 { /* ignore */ }
 	YY_BREAK
 case 25:
 YY_RULE_SETUP
-#line 169 "scanner.l"
+#line 176 "scanner.l"
 { /* ignore */ }
 	YY_BREAK
 case 26:
 YY_RULE_SETUP
-#line 171 "scanner.l"
+#line 178 "scanner.l"
 { return(TOK_EQUALS); }
 	YY_BREAK
 case 27:
 YY_RULE_SETUP
-#line 172 "scanner.l"
+#line 179 "scanner.l"
 { return(TOK_COMMA); }
 	YY_BREAK
 case 28:
 YY_RULE_SETUP
-#line 173 "scanner.l"
+#line 180 "scanner.l"
 { return(TOK_GROUP_START); }
 	YY_BREAK
 case 29:
 YY_RULE_SETUP
-#line 174 "scanner.l"
+#line 181 "scanner.l"
 { return(TOK_GROUP_END); }
 	YY_BREAK
 case 30:
 YY_RULE_SETUP
-#line 175 "scanner.l"
+#line 182 "scanner.l"
 { yylval->ival = 1; return(TOK_BOOLEAN); }
 	YY_BREAK
 case 31:
 YY_RULE_SETUP
-#line 176 "scanner.l"
+#line 183 "scanner.l"
 { yylval->ival = 0; return(TOK_BOOLEAN); }
 	YY_BREAK
 case 32:
 YY_RULE_SETUP
-#line 177 "scanner.l"
+#line 184 "scanner.l"
 { yylval->sval = yytext; return(TOK_NAME); }
 	YY_BREAK
 case 33:
 YY_RULE_SETUP
-#line 178 "scanner.l"
+#line 185 "scanner.l"
 { yylval->fval = atof(yytext); return(TOK_FLOAT); }
 	YY_BREAK
 case 34:
 YY_RULE_SETUP
-#line 179 "scanner.l"
+#line 186 "scanner.l"
 { yylval->ival = atoi(yytext); return(TOK_INTEGER); }
 	YY_BREAK
 case 35:
 YY_RULE_SETUP
-#line 180 "scanner.l"
+#line 187 "scanner.l"
 { yylval->llval = atoll(yytext); return(TOK_INTEGER64); }
 	YY_BREAK
 case 36:
 YY_RULE_SETUP
-#line 181 "scanner.l"
-{
-                    yylval->ival = strtoul(yytext, NULL, 16);
-                    return(TOK_HEX);
-                  }
+#line 188 "scanner.l"
+{ yylval->ival = fromihex(yytext); return(TOK_HEX); }
 	YY_BREAK
 case 37:
 YY_RULE_SETUP
-#line 185 "scanner.l"
+#line 189 "scanner.l"
 { yylval->llval = fromhex(yytext); return(TOK_HEX64); }
 	YY_BREAK
 case 38:
 YY_RULE_SETUP
-#line 186 "scanner.l"
+#line 190 "scanner.l"
 { return(TOK_ARRAY_START); }
 	YY_BREAK
 case 39:
 YY_RULE_SETUP
-#line 187 "scanner.l"
+#line 191 "scanner.l"
 { return(TOK_ARRAY_END); }
 	YY_BREAK
 case 40:
 YY_RULE_SETUP
-#line 188 "scanner.l"
+#line 192 "scanner.l"
 { return(TOK_LIST_START); }
 	YY_BREAK
 case 41:
 YY_RULE_SETUP
-#line 189 "scanner.l"
+#line 193 "scanner.l"
 { return(TOK_LIST_END); }
 	YY_BREAK
 case 42:
 YY_RULE_SETUP
-#line 190 "scanner.l"
+#line 194 "scanner.l"
 { return(TOK_SEMICOLON); }
 	YY_BREAK
 case 43:
@@ -1210,12 +1214,12 @@ case 43:
 yyg->yy_c_buf_p = yy_cp -= 1;
 YY_DO_BEFORE_ACTION; /* set up yytext again */
 YY_RULE_SETUP
-#line 191 "scanner.l"
+#line 195 "scanner.l"
 { /* ignore */ }
 	YY_BREAK
 case 44:
 YY_RULE_SETUP
-#line 192 "scanner.l"
+#line 196 "scanner.l"
 { return(TOK_GARBAGE); }
 	YY_BREAK
 case YY_STATE_EOF(INITIAL):
@@ -1223,7 +1227,7 @@ case YY_STATE_EOF(COMMENT):
 case YY_STATE_EOF(STRING):
 case YY_STATE_EOF(INCLUDE):
 case YY_STATE_EOF(SCRIPTBLOCK):
-#line 194 "scanner.l"
+#line 198 "scanner.l"
 {
                     YY_BUFFER_STATE buf = (YY_BUFFER_STATE)scanctx_pop_include(
                       yyextra);
@@ -1238,10 +1242,10 @@ case YY_STATE_EOF(SCRIPTBLOCK):
 	YY_BREAK
 case 45:
 YY_RULE_SETUP
-#line 205 "scanner.l"
+#line 209 "scanner.l"
 ECHO;
 	YY_BREAK
-#line 1245 "scanner.c"
+#line 1249 "scanner.c"
 
 	case YY_END_OF_BUFFER:
 		{
@@ -1496,6 +1500,8 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 	else
 		ret_val = EOB_ACT_CONTINUE_SCAN;
 
+#ifndef __clang_analyzer__
+	// FIXME: Clang's static analyzer complains about leaking the result of libconfig_yyrealloc
 	if ((yy_size_t) (yyg->yy_n_chars + number_to_move) > YY_CURRENT_BUFFER_LVALUE->yy_buf_size) {
 		/* Extend the array by 50%, plus the number we really need. */
 		yy_size_t new_size = yyg->yy_n_chars + number_to_move + (yyg->yy_n_chars >> 1);
@@ -1503,6 +1509,7 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 		if ( ! YY_CURRENT_BUFFER_LVALUE->yy_ch_buf )
 			YY_FATAL_ERROR( "out of dynamic memory in yy_get_next_buffer()" );
 	}
+#endif // __clang_analyzer__
 
 	yyg->yy_n_chars += number_to_move;
 	YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[yyg->yy_n_chars] = YY_END_OF_BUFFER_CHAR;
@@ -2375,4 +2382,4 @@ void libconfig_yyfree (void * ptr , yyscan_t yyscanner)
 
 #define YYTABLES_NAME "yytables"
 
-#line 205 "scanner.l"
+#line 209 "scanner.l"
diff --git a/3rdparty/libconfig/scanner.h b/3rdparty/libconfig/scanner.h
index 181bc5c94..ac79ff5d1 100644
--- a/3rdparty/libconfig/scanner.h
+++ b/3rdparty/libconfig/scanner.h
@@ -334,7 +334,7 @@ extern int libconfig_yylex \
 #undef YY_DECL
 #endif
 
-#line 205 "scanner.l"
+#line 209 "scanner.l"
 
 #line 340 "scanner.h"
 #undef libconfig_yyIN_HEADER
diff --git a/Hercules.xcodeproj/project.pbxproj b/Hercules.xcodeproj/project.pbxproj
new file mode 100644
index 000000000..c7326dc0f
--- /dev/null
+++ b/Hercules.xcodeproj/project.pbxproj
@@ -0,0 +1,1620 @@
+// !$*UTF8*$!
+{
+	archiveVersion = 1;
+	classes = {
+	};
+	objectVersion = 46;
+	objects = {
+
+/* Begin PBXBuildFile section */
+		A5380CD71856CE3C0090CBC4 /* mapcache.c in Sources */ = {isa = PBXBuildFile; fileRef = A5380CD61856CE3C0090CBC4 /* mapcache.c */; };
+		A5380CD81856CE8A0090CBC4 /* console.c in Sources */ = {isa = PBXBuildFile; fileRef = A56CC692185643BB009EB79C /* console.c */; };
+		A5380CD91856CF4A0090CBC4 /* core.c in Sources */ = {isa = PBXBuildFile; fileRef = A56CC694185643BB009EB79C /* core.c */; };
+		A5380CDA1856D0650090CBC4 /* socket.c in Sources */ = {isa = PBXBuildFile; fileRef = A56CC6BA185643BB009EB79C /* socket.c */; };
+		A5380CDB1856D0690090CBC4 /* malloc.c in Sources */ = {isa = PBXBuildFile; fileRef = A56CC6A3185643BB009EB79C /* malloc.c */; };
+		A567612D185D11D700997C0D /* nullpo.c in Sources */ = {isa = PBXBuildFile; fileRef = A56CC6B2185643BB009EB79C /* nullpo.c */; };
+		A56CC68918564387009EB79C /* account_sql.c in Sources */ = {isa = PBXBuildFile; fileRef = A56CC68118564387009EB79C /* account_sql.c */; };
+		A56CC68A18564387009EB79C /* ipban_sql.c in Sources */ = {isa = PBXBuildFile; fileRef = A56CC68318564387009EB79C /* ipban_sql.c */; };
+		A56CC68B18564387009EB79C /* login.c in Sources */ = {isa = PBXBuildFile; fileRef = A56CC68518564387009EB79C /* login.c */; };
+		A56CC68C18564387009EB79C /* loginlog_sql.c in Sources */ = {isa = PBXBuildFile; fileRef = A56CC68718564387009EB79C /* loginlog_sql.c */; };
+		A56CC6C9185643BB009EB79C /* conf.c in Sources */ = {isa = PBXBuildFile; fileRef = A56CC690185643BB009EB79C /* conf.c */; };
+		A56CC6CA185643BB009EB79C /* conf.c in Sources */ = {isa = PBXBuildFile; fileRef = A56CC690185643BB009EB79C /* conf.c */; };
+		A56CC6CB185643BB009EB79C /* conf.c in Sources */ = {isa = PBXBuildFile; fileRef = A56CC690185643BB009EB79C /* conf.c */; };
+		A56CC6CC185643BB009EB79C /* console.c in Sources */ = {isa = PBXBuildFile; fileRef = A56CC692185643BB009EB79C /* console.c */; };
+		A56CC6CD185643BB009EB79C /* console.c in Sources */ = {isa = PBXBuildFile; fileRef = A56CC692185643BB009EB79C /* console.c */; };
+		A56CC6CE185643BB009EB79C /* console.c in Sources */ = {isa = PBXBuildFile; fileRef = A56CC692185643BB009EB79C /* console.c */; };
+		A56CC6CF185643BB009EB79C /* core.c in Sources */ = {isa = PBXBuildFile; fileRef = A56CC694185643BB009EB79C /* core.c */; };
+		A56CC6D0185643BB009EB79C /* core.c in Sources */ = {isa = PBXBuildFile; fileRef = A56CC694185643BB009EB79C /* core.c */; };
+		A56CC6D1185643BB009EB79C /* core.c in Sources */ = {isa = PBXBuildFile; fileRef = A56CC694185643BB009EB79C /* core.c */; };
+		A56CC6D2185643BB009EB79C /* db.c in Sources */ = {isa = PBXBuildFile; fileRef = A56CC696185643BB009EB79C /* db.c */; };
+		A56CC6D3185643BB009EB79C /* db.c in Sources */ = {isa = PBXBuildFile; fileRef = A56CC696185643BB009EB79C /* db.c */; };
+		A56CC6D4185643BB009EB79C /* db.c in Sources */ = {isa = PBXBuildFile; fileRef = A56CC696185643BB009EB79C /* db.c */; };
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+				EXECUTABLE_PREFIX = "";
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+			buildSettings = {
+				CONFIGURATION_BUILD_DIR = "$(PROJECT_DIR)/plugins";
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+				GCC_PREPROCESSOR_DEFINITIONS = (
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+				);
+				PRODUCT_NAME = "$(TARGET_NAME)";
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+			name = Debug;
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+		A5AA94E91857956100C940C8 /* Release */ = {
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+			buildSettings = {
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+			name = Release;
+		};
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+			buildSettings = {
+				CONFIGURATION_BUILD_DIR = "$(PROJECT_DIR)/plugins";
+				EXECUTABLE_PREFIX = "";
+				GCC_PREPROCESSOR_DEFINITIONS = (
+					"DEBUG=1",
+					"$(inherited)",
+				);
+				PRODUCT_NAME = "$(TARGET_NAME)";
+			};
+			name = Debug;
+		};
+		A5AA94F6185799B700C940C8 /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CONFIGURATION_BUILD_DIR = "$(PROJECT_DIR)/plugins";
+				EXECUTABLE_PREFIX = "";
+				PRODUCT_NAME = "$(TARGET_NAME)";
+			};
+			name = Release;
+		};
+/* End XCBuildConfiguration section */
+
+/* Begin XCConfigurationList section */
+		A5380CD31856CE190090CBC4 /* Build configuration list for PBXNativeTarget "mapcache" */ = {
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+			buildConfigurations = (
+				A5380CD41856CE190090CBC4 /* Debug */,
+				A5380CD51856CE190090CBC4 /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		A56CC655185642B4009EB79C /* Build configuration list for PBXProject "Hercules" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				A56CC661185642B4009EB79C /* Debug */,
+				A56CC662185642B4009EB79C /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		A56CC66C18564315009EB79C /* Build configuration list for PBXNativeTarget "login-server" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				A56CC66D18564315009EB79C /* Debug */,
+				A56CC66E18564315009EB79C /* Release */,
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+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
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+			isa = XCConfigurationList;
+			buildConfigurations = (
+				A56CC6761856434D009EB79C /* Debug */,
+				A56CC6771856434D009EB79C /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		A56CC67E18564357009EB79C /* Build configuration list for PBXNativeTarget "map-server" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				A56CC67F18564357009EB79C /* Debug */,
+				A56CC68018564357009EB79C /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		A58A5A23185801FF0099683E /* Build configuration list for PBXNativeTarget "HPMHooking" */ = {
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+			buildConfigurations = (
+				A58A5A24185801FF0099683E /* Debug */,
+				A58A5A25185801FF0099683E /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		A5AA94EA1857956100C940C8 /* Build configuration list for PBXNativeTarget "sample" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
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+				A5AA94E91857956100C940C8 /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		A5AA94F4185799B700C940C8 /* Build configuration list for PBXNativeTarget "db2sql" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				A5AA94F5185799B700C940C8 /* Debug */,
+				A5AA94F6185799B700C940C8 /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
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diff --git a/Hercules.xcodeproj/project.xcworkspace/contents.xcworkspacedata b/Hercules.xcodeproj/project.xcworkspace/contents.xcworkspacedata
new file mode 100644
index 000000000..14eee78d6
--- /dev/null
+++ b/Hercules.xcodeproj/project.xcworkspace/contents.xcworkspacedata
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "self:Hercules.xcodeproj">
+   </FileRef>
+</Workspace>
diff --git a/Hercules.xcodeproj/xcshareddata/xcschemes/HPMHooking.xcscheme b/Hercules.xcodeproj/xcshareddata/xcschemes/HPMHooking.xcscheme
new file mode 100644
index 000000000..50337fc91
--- /dev/null
+++ b/Hercules.xcodeproj/xcshareddata/xcschemes/HPMHooking.xcscheme
@@ -0,0 +1,59 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "0500"
+   version = "1.3">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "A58A5A1E185801FF0099683E"
+               BuildableName = "HPMHooking.dylib"
+               BlueprintName = "HPMHooking"
+               ReferencedContainer = "container:Hercules.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      buildConfiguration = "Debug">
+      <Testables>
+      </Testables>
+   </TestAction>
+   <LaunchAction
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      buildConfiguration = "Debug"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      allowLocationSimulation = "YES">
+      <AdditionalOptions>
+      </AdditionalOptions>
+   </LaunchAction>
+   <ProfileAction
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      buildConfiguration = "Release"
+      debugDocumentVersioning = "YES">
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>
diff --git a/Hercules.xcodeproj/xcshareddata/xcschemes/char-server.xcscheme b/Hercules.xcodeproj/xcshareddata/xcschemes/char-server.xcscheme
new file mode 100644
index 000000000..0b5101f68
--- /dev/null
+++ b/Hercules.xcodeproj/xcshareddata/xcschemes/char-server.xcscheme
@@ -0,0 +1,86 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "0500"
+   version = "1.3">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "A56CC6721856434D009EB79C"
+               BuildableName = "char-server"
+               BlueprintName = "char-server"
+               ReferencedContainer = "container:Hercules.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      buildConfiguration = "Debug">
+      <Testables>
+      </Testables>
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "A56CC6721856434D009EB79C"
+            BuildableName = "char-server"
+            BlueprintName = "char-server"
+            ReferencedContainer = "container:Hercules.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+   </TestAction>
+   <LaunchAction
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      buildConfiguration = "Debug"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      allowLocationSimulation = "YES">
+      <BuildableProductRunnable>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "A56CC6721856434D009EB79C"
+            BuildableName = "char-server"
+            BlueprintName = "char-server"
+            ReferencedContainer = "container:Hercules.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+      <AdditionalOptions>
+      </AdditionalOptions>
+   </LaunchAction>
+   <ProfileAction
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      buildConfiguration = "Release"
+      debugDocumentVersioning = "YES">
+      <BuildableProductRunnable>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "A56CC6721856434D009EB79C"
+            BuildableName = "char-server"
+            BlueprintName = "char-server"
+            ReferencedContainer = "container:Hercules.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>
diff --git a/Hercules.xcodeproj/xcshareddata/xcschemes/db2sql.xcscheme b/Hercules.xcodeproj/xcshareddata/xcschemes/db2sql.xcscheme
new file mode 100644
index 000000000..8aebe0f38
--- /dev/null
+++ b/Hercules.xcodeproj/xcshareddata/xcschemes/db2sql.xcscheme
@@ -0,0 +1,126 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "0500"
+   version = "1.7">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "NO"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "A56CC67B18564356009EB79C"
+               BuildableName = "map-server"
+               BlueprintName = "map-server"
+               ReferencedContainer = "container:Hercules.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "A5AA94F2185799B700C940C8"
+               BuildableName = "db2sql.dylib"
+               BlueprintName = "db2sql"
+               ReferencedContainer = "container:Hercules.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      buildConfiguration = "Debug">
+      <Testables>
+      </Testables>
+   </TestAction>
+   <LaunchAction
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      buildConfiguration = "Debug"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      allowLocationSimulation = "YES">
+      <PreActions>
+         <ExecutionAction
+            ActionType = "Xcode.IDEStandardExecutionActionsCore.ExecutionActionType.ShellScriptAction">
+            <ActionContent
+               title = "Run Script"
+               scriptText = "sed -e &apos;s:^\([[:blank:]]*\)//&quot;db2sql&quot;,$:\1&quot;db2sql&quot;,:&apos; -i .db2sql &quot;${PROJECT_DIR}/conf/plugins.conf&quot;"
+               shellToInvoke = "/bin/bash">
+               <EnvironmentBuildable>
+                  <BuildableReference
+                     BuildableIdentifier = "primary"
+                     BlueprintIdentifier = "A56CC67B18564356009EB79C"
+                     BuildableName = "map-server"
+                     BlueprintName = "map-server"
+                     ReferencedContainer = "container:Hercules.xcodeproj">
+                  </BuildableReference>
+               </EnvironmentBuildable>
+            </ActionContent>
+         </ExecutionAction>
+      </PreActions>
+      <PostActions>
+         <ExecutionAction
+            ActionType = "Xcode.IDEStandardExecutionActionsCore.ExecutionActionType.ShellScriptAction">
+            <ActionContent
+               title = "Run Script"
+               scriptText = "mv &quot;${PROJECT_DIR}/conf/plugins.conf.db2sql&quot; &quot;${PROJECT_DIR}/conf/plugins.conf&quot;"
+               shellToInvoke = "/bin/bash">
+               <EnvironmentBuildable>
+                  <BuildableReference
+                     BuildableIdentifier = "primary"
+                     BlueprintIdentifier = "A56CC67B18564356009EB79C"
+                     BuildableName = "map-server"
+                     BlueprintName = "map-server"
+                     ReferencedContainer = "container:Hercules.xcodeproj">
+                  </BuildableReference>
+               </EnvironmentBuildable>
+            </ActionContent>
+         </ExecutionAction>
+      </PostActions>
+      <BuildableProductRunnable>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "A56CC67B18564356009EB79C"
+            BuildableName = "map-server"
+            BlueprintName = "map-server"
+            ReferencedContainer = "container:Hercules.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+      <CommandLineArguments>
+         <CommandLineArgument
+            argument = "--db2sql"
+            isEnabled = "YES">
+         </CommandLineArgument>
+      </CommandLineArguments>
+      <AdditionalOptions>
+      </AdditionalOptions>
+   </LaunchAction>
+   <ProfileAction
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      buildConfiguration = "Release"
+      debugDocumentVersioning = "YES">
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>
diff --git a/Hercules.xcodeproj/xcshareddata/xcschemes/login-server.xcscheme b/Hercules.xcodeproj/xcshareddata/xcschemes/login-server.xcscheme
new file mode 100644
index 000000000..10b7e424a
--- /dev/null
+++ b/Hercules.xcodeproj/xcshareddata/xcschemes/login-server.xcscheme
@@ -0,0 +1,86 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "0500"
+   version = "1.3">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "A56CC66918564315009EB79C"
+               BuildableName = "login-server"
+               BlueprintName = "login-server"
+               ReferencedContainer = "container:Hercules.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      buildConfiguration = "Debug">
+      <Testables>
+      </Testables>
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "A56CC66918564315009EB79C"
+            BuildableName = "login-server"
+            BlueprintName = "login-server"
+            ReferencedContainer = "container:Hercules.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+   </TestAction>
+   <LaunchAction
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      buildConfiguration = "Debug"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      allowLocationSimulation = "YES">
+      <BuildableProductRunnable>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "A56CC66918564315009EB79C"
+            BuildableName = "login-server"
+            BlueprintName = "login-server"
+            ReferencedContainer = "container:Hercules.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+      <AdditionalOptions>
+      </AdditionalOptions>
+   </LaunchAction>
+   <ProfileAction
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      buildConfiguration = "Release"
+      debugDocumentVersioning = "YES">
+      <BuildableProductRunnable>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "A56CC66918564315009EB79C"
+            BuildableName = "login-server"
+            BlueprintName = "login-server"
+            ReferencedContainer = "container:Hercules.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>
diff --git a/Hercules.xcodeproj/xcshareddata/xcschemes/map-server.xcscheme b/Hercules.xcodeproj/xcshareddata/xcschemes/map-server.xcscheme
new file mode 100644
index 000000000..bb95d0555
--- /dev/null
+++ b/Hercules.xcodeproj/xcshareddata/xcschemes/map-server.xcscheme
@@ -0,0 +1,86 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "0500"
+   version = "1.3">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "A56CC67B18564356009EB79C"
+               BuildableName = "map-server"
+               BlueprintName = "map-server"
+               ReferencedContainer = "container:Hercules.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      buildConfiguration = "Debug">
+      <Testables>
+      </Testables>
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "A56CC67B18564356009EB79C"
+            BuildableName = "map-server"
+            BlueprintName = "map-server"
+            ReferencedContainer = "container:Hercules.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+   </TestAction>
+   <LaunchAction
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      buildConfiguration = "Debug"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      allowLocationSimulation = "YES">
+      <BuildableProductRunnable>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "A56CC67B18564356009EB79C"
+            BuildableName = "map-server"
+            BlueprintName = "map-server"
+            ReferencedContainer = "container:Hercules.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+      <AdditionalOptions>
+      </AdditionalOptions>
+   </LaunchAction>
+   <ProfileAction
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      buildConfiguration = "Release"
+      debugDocumentVersioning = "YES">
+      <BuildableProductRunnable>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "A56CC67B18564356009EB79C"
+            BuildableName = "map-server"
+            BlueprintName = "map-server"
+            ReferencedContainer = "container:Hercules.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>
diff --git a/Hercules.xcodeproj/xcshareddata/xcschemes/mapcache.xcscheme b/Hercules.xcodeproj/xcshareddata/xcschemes/mapcache.xcscheme
new file mode 100644
index 000000000..30ab4dc51
--- /dev/null
+++ b/Hercules.xcodeproj/xcshareddata/xcschemes/mapcache.xcscheme
@@ -0,0 +1,86 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "0500"
+   version = "1.3">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "A5380CCC1856CE180090CBC4"
+               BuildableName = "mapcache"
+               BlueprintName = "mapcache"
+               ReferencedContainer = "container:Hercules.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      buildConfiguration = "Debug">
+      <Testables>
+      </Testables>
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "A5380CCC1856CE180090CBC4"
+            BuildableName = "mapcache"
+            BlueprintName = "mapcache"
+            ReferencedContainer = "container:Hercules.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+   </TestAction>
+   <LaunchAction
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      buildConfiguration = "Debug"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      allowLocationSimulation = "YES">
+      <BuildableProductRunnable>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "A5380CCC1856CE180090CBC4"
+            BuildableName = "mapcache"
+            BlueprintName = "mapcache"
+            ReferencedContainer = "container:Hercules.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+      <AdditionalOptions>
+      </AdditionalOptions>
+   </LaunchAction>
+   <ProfileAction
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      buildConfiguration = "Release"
+      debugDocumentVersioning = "YES">
+      <BuildableProductRunnable>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "A5380CCC1856CE180090CBC4"
+            BuildableName = "mapcache"
+            BlueprintName = "mapcache"
+            ReferencedContainer = "container:Hercules.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>
diff --git a/Hercules.xcodeproj/xcshareddata/xcschemes/sample.xcscheme b/Hercules.xcodeproj/xcshareddata/xcschemes/sample.xcscheme
new file mode 100644
index 000000000..a9df36929
--- /dev/null
+++ b/Hercules.xcodeproj/xcshareddata/xcschemes/sample.xcscheme
@@ -0,0 +1,59 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "0500"
+   version = "1.3">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "A5AA94E61857956100C940C8"
+               BuildableName = "sample.dylib"
+               BlueprintName = "sample"
+               ReferencedContainer = "container:Hercules.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      buildConfiguration = "Debug">
+      <Testables>
+      </Testables>
+   </TestAction>
+   <LaunchAction
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      buildConfiguration = "Debug"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      allowLocationSimulation = "YES">
+      <AdditionalOptions>
+      </AdditionalOptions>
+   </LaunchAction>
+   <ProfileAction
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      buildConfiguration = "Release"
+      debugDocumentVersioning = "YES">
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>
diff --git a/configure b/configure
index bf0a4d8ea..7142ed479 100755
--- a/configure
+++ b/configure
@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.in 0219c4d.
+# From configure.in d0f16b7.
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.69.
 #
@@ -3643,12 +3643,12 @@ fi
 # Check whether --enable-lto was given.
 if test "${enable_lto+set}" = set; then :
   enableval=$enable_lto;
-        enable_lto="$enableval"
-        case $enableval in
-            "no");;
-            "yes");;
-            *) as_fn_error $? "invalid argument --enable-lto=$disableval... stopping" "$LINENO" 5;;
-        esac
+		enable_lto="$enableval"
+		case $enableval in
+			"no");;
+			"yes");;
+			*) as_fn_error $? "invalid argument --enable-lto=$disableval... stopping" "$LINENO" 5;;
+		esac
 
 else
   enable_lto="yes"
@@ -4566,7 +4566,7 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
 
-CFLAGS="$CFLAGS -pipe -ffast-math -Wall -Wno-sign-compare"
+CFLAGS="$CFLAGS -pipe -ffast-math -Wall -Wextra -Wno-sign-compare"
 CPPFLAGS="$CPPFLAGS -I../common"
 
 
@@ -4924,28 +4924,6 @@ fi
 
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -Wno-unused-parameter" >&5
-$as_echo_n "checking whether $CC supports -Wno-unused-parameter... " >&6; }
-OLD_CFLAGS="$CFLAGS"
-CFLAGS="$CFLAGS -Wno-unused-parameter"
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-int foo;
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
-else
-
-		{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-		CFLAGS="$OLD_CFLAGS"
-
-
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-
-
 #
 # LTO Support test
 #
@@ -4970,8 +4948,8 @@ else
 /* end confdefs.h.  */
 
 			int main(int argc, char **argv){
-               return 0;
-           }
+				return 0;
+			}
 
 _ACEOF
 if ac_fn_c_try_run "$LINENO"; then :
@@ -4995,23 +4973,278 @@ fi
 
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -Wno-pointer-sign" >&5
-$as_echo_n "checking whether $CC supports -Wno-pointer-sign... " >&6; }
-OLD_CFLAGS="$CFLAGS"
-CFLAGS="$CFLAGS -Wno-pointer-sign"
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+
+
+
+
+		{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -Wno-unused-parameter" >&5
+$as_echo_n "checking whether $CC supports -Wno-unused-parameter... " >&6; }
+		OLD_CFLAGS="$CFLAGS"
+		CFLAGS="$CFLAGS -Werror -Wno-unused-parameter"
+		cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 int foo;
 _ACEOF
 if ac_fn_c_try_compile "$LINENO"; then :
 
-		{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+				# Recent versions of gcc don't fail if -Wno-foo is not recognized
+				# (unless there are also other warnings), so we also check for -Wfoo
+				# which always fails if not supported
+				CFLAGS="$OLD_CFLAGS -Werror -Wunused-parameter"
+				cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+int foo;
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+						{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+						CFLAGS="$OLD_CFLAGS -Wno-unused-parameter"
+						# Optionally, run a test
+						if test "xint foo(int bar) { return 0; }" != "x"; then
+							{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC can actually use -Wno-unused-parameter" >&5
+$as_echo_n "checking whether $CC can actually use -Wno-unused-parameter... " >&6; }
+							CFLAGS="$OLD_CFLAGS -Werror -Wunused-parameter"
+							cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+int foo(int bar) { return 0; }
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+									{ $as_echo "$as_me:${as_lineno-$LINENO}: result: not needed but enabled" >&5
+$as_echo "not needed but enabled" >&6; }
+									CFLAGS="$OLD_CFLAGS"
+
+else
+
+									CFLAGS="$OLD_CFLAGS -Werror -Wno-unused-parameter"
+									cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+int foo(int bar) { return 0; }
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+											{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+											CFLAGS="$OLD_CFLAGS -Wno-unused-parameter"
+
+else
+
+											{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+											CFLAGS="$OLD_CFLAGS"
+
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+						fi
+
+else
+
+						{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+						CFLAGS="$OLD_CFLAGS"
+
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+else
+
+				{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+				CFLAGS="$OLD_CFLAGS"
+
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+
+
+		{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -Wno-maybe-uninitialized" >&5
+$as_echo_n "checking whether $CC supports -Wno-maybe-uninitialized... " >&6; }
+		OLD_CFLAGS="$CFLAGS"
+		CFLAGS="$CFLAGS -Werror -Wno-maybe-uninitialized"
+		cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+int foo;
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+				# Recent versions of gcc don't fail if -Wno-foo is not recognized
+				# (unless there are also other warnings), so we also check for -Wfoo
+				# which always fails if not supported
+				CFLAGS="$OLD_CFLAGS -Werror -Wmaybe-uninitialized"
+				cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+int foo;
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+						{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+						CFLAGS="$OLD_CFLAGS -Wno-maybe-uninitialized"
+						# Optionally, run a test
+						if test "x" != "x"; then
+							{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC can actually use -Wno-maybe-uninitialized" >&5
+$as_echo_n "checking whether $CC can actually use -Wno-maybe-uninitialized... " >&6; }
+							CFLAGS="$OLD_CFLAGS -Werror -Wmaybe-uninitialized"
+							cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+									{ $as_echo "$as_me:${as_lineno-$LINENO}: result: not needed but enabled" >&5
+$as_echo "not needed but enabled" >&6; }
+									CFLAGS="$OLD_CFLAGS"
+
+else
+
+									CFLAGS="$OLD_CFLAGS -Werror -Wno-maybe-uninitialized"
+									cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+											{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 $as_echo "yes" >&6; }
-		{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC can actually use -Wno-pointer-sign" >&5
-$as_echo_n "checking whether $CC can actually use -Wno-pointer-sign... " >&6; }
-		# This option causes warnings in C++ mode
-		# Note: -Werror must be before -Wno-pointer-sign, otherwise it does not do anything
-		CFLAGS="$OLD_CFLAGS -Werror -Wno-pointer-sign"
+											CFLAGS="$OLD_CFLAGS -Wno-maybe-uninitialized"
+
+else
+
+											{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+											CFLAGS="$OLD_CFLAGS"
+
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+						fi
+
+else
+
+						{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+						CFLAGS="$OLD_CFLAGS"
+
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+else
+
+				{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+				CFLAGS="$OLD_CFLAGS"
+
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+
+
+		{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -Wno-clobbered" >&5
+$as_echo_n "checking whether $CC supports -Wno-clobbered... " >&6; }
+		OLD_CFLAGS="$CFLAGS"
+		CFLAGS="$CFLAGS -Werror -Wno-clobbered"
+		cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+int foo;
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+				# Recent versions of gcc don't fail if -Wno-foo is not recognized
+				# (unless there are also other warnings), so we also check for -Wfoo
+				# which always fails if not supported
+				CFLAGS="$OLD_CFLAGS -Werror -Wclobbered"
+				cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+int foo;
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+						{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+						CFLAGS="$OLD_CFLAGS -Wno-clobbered"
+						# Optionally, run a test
+						if test "x" != "x"; then
+							{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC can actually use -Wno-clobbered" >&5
+$as_echo_n "checking whether $CC can actually use -Wno-clobbered... " >&6; }
+							CFLAGS="$OLD_CFLAGS -Werror -Wclobbered"
+							cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+									{ $as_echo "$as_me:${as_lineno-$LINENO}: result: not needed but enabled" >&5
+$as_echo "not needed but enabled" >&6; }
+									CFLAGS="$OLD_CFLAGS"
+
+else
+
+									CFLAGS="$OLD_CFLAGS -Werror -Wno-clobbered"
+									cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+											{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+											CFLAGS="$OLD_CFLAGS -Wno-clobbered"
+
+else
+
+											{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+											CFLAGS="$OLD_CFLAGS"
+
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+						fi
+
+else
+
+						{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+						CFLAGS="$OLD_CFLAGS"
+
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+else
+
+				{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+				CFLAGS="$OLD_CFLAGS"
+
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+
+
+		{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -Wempty-body" >&5
+$as_echo_n "checking whether $CC supports -Wempty-body... " >&6; }
+		OLD_CFLAGS="$CFLAGS"
+		CFLAGS="$CFLAGS -Werror -Wempty-body"
 		cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 int foo;
@@ -5020,7 +5253,30 @@ if ac_fn_c_try_compile "$LINENO"; then :
 
 				{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 $as_echo "yes" >&6; }
-				CFLAGS="$OLD_CFLAGS -Wno-pointer-sign"
+				CFLAGS="$OLD_CFLAGS -Wempty-body"
+				# Optionally, run a test
+				if test "x" != "x"; then
+					{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC can actually use -Wempty-body" >&5
+$as_echo_n "checking whether $CC can actually use -Wempty-body... " >&6; }
+					CFLAGS="$OLD_CFLAGS -Werror -Wempty-body"
+					cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+							{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+							CFLAGS="$OLD_CFLAGS"
+
+
+							{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+							CFLAGS="$OLD_CFLAGS -Wempty-body"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+				fi
 
 else
 
@@ -5032,39 +5288,565 @@ $as_echo "no" >&6; }
 fi
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
 
+
+
+		{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -Wnewline-eof" >&5
+$as_echo_n "checking whether $CC supports -Wnewline-eof... " >&6; }
+		OLD_CFLAGS="$CFLAGS"
+		CFLAGS="$CFLAGS -Werror -Wnewline-eof"
+		cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+int foo;
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+				{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+				CFLAGS="$OLD_CFLAGS -Wnewline-eof"
+				# Optionally, run a test
+				if test "x" != "x"; then
+					{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC can actually use -Wnewline-eof" >&5
+$as_echo_n "checking whether $CC can actually use -Wnewline-eof... " >&6; }
+					CFLAGS="$OLD_CFLAGS -Werror -Wnewline-eof"
+					cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+							{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+							CFLAGS="$OLD_CFLAGS"
+
+
+							{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+							CFLAGS="$OLD_CFLAGS -Wnewline-eof"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+				fi
+
 else
 
-		{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+				{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
 $as_echo "no" >&6; }
-		CFLAGS="$OLD_CFLAGS"
+				CFLAGS="$OLD_CFLAGS"
+
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+
+
+		{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -Wint-conversion" >&5
+$as_echo_n "checking whether $CC supports -Wint-conversion... " >&6; }
+		OLD_CFLAGS="$CFLAGS"
+		CFLAGS="$CFLAGS -Werror -Wint-conversion"
+		cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+int foo;
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+				{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+				CFLAGS="$OLD_CFLAGS -Wint-conversion"
+				# Optionally, run a test
+				if test "x" != "x"; then
+					{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC can actually use -Wint-conversion" >&5
+$as_echo_n "checking whether $CC can actually use -Wint-conversion... " >&6; }
+					CFLAGS="$OLD_CFLAGS -Werror -Wint-conversion"
+					cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+							{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+							CFLAGS="$OLD_CFLAGS"
+
+
+							{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+							CFLAGS="$OLD_CFLAGS -Wint-conversion"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+				fi
+
+else
+
+				{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+				CFLAGS="$OLD_CFLAGS"
+
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+
+
+		{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -Wenum-conversion" >&5
+$as_echo_n "checking whether $CC supports -Wenum-conversion... " >&6; }
+		OLD_CFLAGS="$CFLAGS"
+		CFLAGS="$CFLAGS -Werror -Wenum-conversion"
+		cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+int foo;
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
 
+				{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+				CFLAGS="$OLD_CFLAGS -Wenum-conversion"
+				# Optionally, run a test
+				if test "x" != "x"; then
+					{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC can actually use -Wenum-conversion" >&5
+$as_echo_n "checking whether $CC can actually use -Wenum-conversion... " >&6; }
+					CFLAGS="$OLD_CFLAGS -Werror -Wenum-conversion"
+					cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+							{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+							CFLAGS="$OLD_CFLAGS"
+
+
+							{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+							CFLAGS="$OLD_CFLAGS -Wenum-conversion"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+				fi
+
+else
+
+				{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+				CFLAGS="$OLD_CFLAGS"
+
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+
+
+		{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -Wshorten-64-to-32" >&5
+$as_echo_n "checking whether $CC supports -Wshorten-64-to-32... " >&6; }
+		OLD_CFLAGS="$CFLAGS"
+		CFLAGS="$CFLAGS -Werror -Wshorten-64-to-32"
+		cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+int foo;
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+				{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+				CFLAGS="$OLD_CFLAGS -Wshorten-64-to-32"
+				# Optionally, run a test
+				if test "x" != "x"; then
+					{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC can actually use -Wshorten-64-to-32" >&5
+$as_echo_n "checking whether $CC can actually use -Wshorten-64-to-32... " >&6; }
+					CFLAGS="$OLD_CFLAGS -Werror -Wshorten-64-to-32"
+					cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+							{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+							CFLAGS="$OLD_CFLAGS"
+
+
+							{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+							CFLAGS="$OLD_CFLAGS -Wshorten-64-to-32"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+				fi
+
+else
+
+				{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+				CFLAGS="$OLD_CFLAGS"
+
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+
+
+		{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -Wconstant-conversion" >&5
+$as_echo_n "checking whether $CC supports -Wconstant-conversion... " >&6; }
+		OLD_CFLAGS="$CFLAGS"
+		CFLAGS="$CFLAGS -Werror -Wconstant-conversion"
+		cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+int foo;
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+				{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+				CFLAGS="$OLD_CFLAGS -Wconstant-conversion"
+				# Optionally, run a test
+				if test "x" != "x"; then
+					{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC can actually use -Wconstant-conversion" >&5
+$as_echo_n "checking whether $CC can actually use -Wconstant-conversion... " >&6; }
+					CFLAGS="$OLD_CFLAGS -Werror -Wconstant-conversion"
+					cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+							{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+							CFLAGS="$OLD_CFLAGS"
+
+
+							{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+							CFLAGS="$OLD_CFLAGS -Wconstant-conversion"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+				fi
+
+else
+
+				{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+				CFLAGS="$OLD_CFLAGS"
+
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+
+
+		{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -Wbool-conversion" >&5
+$as_echo_n "checking whether $CC supports -Wbool-conversion... " >&6; }
+		OLD_CFLAGS="$CFLAGS"
+		CFLAGS="$CFLAGS -Werror -Wbool-conversion"
+		cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+int foo;
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+				{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+				CFLAGS="$OLD_CFLAGS -Wbool-conversion"
+				# Optionally, run a test
+				if test "x" != "x"; then
+					{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC can actually use -Wbool-conversion" >&5
+$as_echo_n "checking whether $CC can actually use -Wbool-conversion... " >&6; }
+					CFLAGS="$OLD_CFLAGS -Werror -Wbool-conversion"
+					cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+							{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+							CFLAGS="$OLD_CFLAGS"
+
+
+							{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+							CFLAGS="$OLD_CFLAGS -Wbool-conversion"
 
 fi
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+				fi
+
+else
 
+				{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+				CFLAGS="$OLD_CFLAGS"
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -Wno-switch" >&5
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+
+
+		{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -Wno-switch" >&5
 $as_echo_n "checking whether $CC supports -Wno-switch... " >&6; }
-OLD_CFLAGS="$CFLAGS"
-CFLAGS="$CFLAGS -Wno-switch"
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+		OLD_CFLAGS="$CFLAGS"
+		CFLAGS="$CFLAGS -Werror -Wno-switch"
+		cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 int foo;
 _ACEOF
 if ac_fn_c_try_compile "$LINENO"; then :
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+
+				# Recent versions of gcc don't fail if -Wno-foo is not recognized
+				# (unless there are also other warnings), so we also check for -Wfoo
+				# which always fails if not supported
+				CFLAGS="$OLD_CFLAGS -Werror -Wswitch"
+				cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+int foo;
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+						{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 $as_echo "yes" >&6; }
+						CFLAGS="$OLD_CFLAGS -Wno-switch"
+						# Optionally, run a test
+						if test "x" != "x"; then
+							{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC can actually use -Wno-switch" >&5
+$as_echo_n "checking whether $CC can actually use -Wno-switch... " >&6; }
+							CFLAGS="$OLD_CFLAGS -Werror -Wswitch"
+							cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+									{ $as_echo "$as_me:${as_lineno-$LINENO}: result: not needed but enabled" >&5
+$as_echo "not needed but enabled" >&6; }
+									CFLAGS="$OLD_CFLAGS"
+
 else
 
-		{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+									CFLAGS="$OLD_CFLAGS -Werror -Wno-switch"
+									cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+											{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+											CFLAGS="$OLD_CFLAGS -Wno-switch"
+
+else
+
+											{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
 $as_echo "no" >&6; }
-		CFLAGS="$OLD_CFLAGS"
+											CFLAGS="$OLD_CFLAGS"
+
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+						fi
+
+else
+
+						{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+						CFLAGS="$OLD_CFLAGS"
+
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+else
+
+				{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+				CFLAGS="$OLD_CFLAGS"
+
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+
+
+		{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -Wno-missing-field-initializers" >&5
+$as_echo_n "checking whether $CC supports -Wno-missing-field-initializers... " >&6; }
+		OLD_CFLAGS="$CFLAGS"
+		CFLAGS="$CFLAGS -Werror -Wno-missing-field-initializers"
+		cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+int foo;
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+				# Recent versions of gcc don't fail if -Wno-foo is not recognized
+				# (unless there are also other warnings), so we also check for -Wfoo
+				# which always fails if not supported
+				CFLAGS="$OLD_CFLAGS -Werror -Wmissing-field-initializers"
+				cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+int foo;
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+						{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+						CFLAGS="$OLD_CFLAGS -Wno-missing-field-initializers"
+						# Optionally, run a test
+						if test "x" != "x"; then
+							{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC can actually use -Wno-missing-field-initializers" >&5
+$as_echo_n "checking whether $CC can actually use -Wno-missing-field-initializers... " >&6; }
+							CFLAGS="$OLD_CFLAGS -Werror -Wmissing-field-initializers"
+							cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+									{ $as_echo "$as_me:${as_lineno-$LINENO}: result: not needed but enabled" >&5
+$as_echo "not needed but enabled" >&6; }
+									CFLAGS="$OLD_CFLAGS"
+
+else
+
+									CFLAGS="$OLD_CFLAGS -Werror -Wno-missing-field-initializers"
+									cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+											{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+											CFLAGS="$OLD_CFLAGS -Wno-missing-field-initializers"
+
+else
+
+											{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+											CFLAGS="$OLD_CFLAGS"
 
 
 fi
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
 
 
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+						fi
+
+else
+
+						{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+						CFLAGS="$OLD_CFLAGS"
+
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+else
+
+				{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+				CFLAGS="$OLD_CFLAGS"
+
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+
+
+# Certain versions of gcc make -Wshadow completely useless by making it flood
+# you with unnecessary warnings <https://lkml.org/lkml/2006/11/28/239>
+# Let's check if we can really use it
+SAVED_OLD_CFLAGS="$CFLAGS"
+
+		{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -Wshadow" >&5
+$as_echo_n "checking whether $CC supports -Wshadow... " >&6; }
+		OLD_CFLAGS="$CFLAGS"
+		CFLAGS="$CFLAGS -Werror -Wshadow"
+		cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+int foo;
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+				{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+				CFLAGS="$OLD_CFLAGS -Wshadow"
+				# Optionally, run a test
+				if test "x" != "x"; then
+					{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC can actually use -Wshadow" >&5
+$as_echo_n "checking whether $CC can actually use -Wshadow... " >&6; }
+					CFLAGS="$OLD_CFLAGS -Werror -Wshadow"
+					cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+							{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+							CFLAGS="$OLD_CFLAGS"
+
+
+							{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+							CFLAGS="$OLD_CFLAGS -Wshadow"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+				fi
+
+else
+
+				{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+				CFLAGS="$OLD_CFLAGS"
+
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+
+if test "x$CFLAGS" != "x$SAVED_OLD_CFLAGS"; then
+	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC can efficiently use -Wshadow" >&5
+$as_echo_n "checking whether $CC can efficiently use -Wshadow... " >&6; }
+	NEW_CFLAGS="$CFLAGS"
+	CFLAGS="$CFLAGS -Werror -Wshadow"
+	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+			int foo(void) {
+				return 0;
+			}
+			int bar(void) {
+				int foo = 0;
+				return foo + 1;
+			}
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+			{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+			CFLAGS="$NEW_CFLAGS"
+
+else
+
+			{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+			CFLAGS="$SAVED_OLD_CFLAGS"
+
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -fPIC" >&5
 $as_echo_n "checking whether $CC supports -fPIC... " >&6; }
 OLD_CFLAGS="$CFLAGS"
@@ -5470,7 +6252,7 @@ fi
 case $enable_debug in
 	"no")
 		# default value
-		CFLAGS="$CFLAGS -Wno-unused -Wno-parentheses"
+#		CFLAGS="$CFLAGS -Wno-unused -Wno-parentheses"
 		;;
 	"yes")
 		CFLAGS="$CFLAGS -g -DDEBUG"
@@ -6473,6 +7255,9 @@ CYGWIN*)
 	fd_setsize="done"
 	DLLEXT=".dll"
 	;;
+Darwin*)
+	DLLEXT=".dylib"
+	;;
 esac
 
 
diff --git a/configure.in b/configure.in
index 98c493a03..94bad9ca4 100644
--- a/configure.in
+++ b/configure.in
@@ -248,22 +248,22 @@ AC_ARG_ENABLE(
 # LTO
 #
 AC_ARG_ENABLE(
-    [lto],
-    AC_HELP_STRING(
-        [--enable-lto],
-        [
+	[lto],
+	AC_HELP_STRING(
+		[--enable-lto],
+		[
 			Enables or Disables Linktime Code Optimization (LTO is enabled by default)
-        ]
-    ),
-    [
-        enable_lto="$enableval"
-        case $enableval in
-            "no");;
-            "yes");;
-            *) AC_MSG_ERROR([[invalid argument --enable-lto=$disableval... stopping]]);;
-        esac
-    ],
-    [enable_lto="yes"]
+		]
+	),
+	[
+		enable_lto="$enableval"
+		case $enableval in
+			"no");;
+			"yes");;
+			*) AC_MSG_ERROR([[invalid argument --enable-lto=$disableval... stopping]]);;
+		esac
+	],
+	[enable_lto="yes"]
 )
 
 
@@ -433,7 +433,7 @@ AC_PATH_PROG(AR, ar)
 AC_LANG([C])
 
 
-CFLAGS="$CFLAGS -pipe -ffast-math -Wall -Wno-sign-compare"
+CFLAGS="$CFLAGS -pipe -ffast-math -Wall -Wextra -Wno-sign-compare"
 CPPFLAGS="$CPPFLAGS -I../common"
 
 
@@ -517,19 +517,6 @@ AC_RUN_IFELSE(
 )
 
 
-AC_MSG_CHECKING([whether $CC supports -Wno-unused-parameter])
-OLD_CFLAGS="$CFLAGS"
-CFLAGS="$CFLAGS -Wno-unused-parameter"
-AC_COMPILE_IFELSE(
-	[AC_LANG_SOURCE([int foo;])],
-	[AC_MSG_RESULT([yes])],
-	[
-		AC_MSG_RESULT([no])
-		CFLAGS="$OLD_CFLAGS"
-	]
-)
-
-
 #
 # LTO Support test
 #
@@ -545,8 +532,8 @@ if test "$enable_lto" != "no" ; then
 	AC_RUN_IFELSE(
 		[AC_LANG_SOURCE([
 			int main(int argc, char **argv){
-               return 0;
-           }
+				return 0;
+			}
 		])],
 		[
 			AC_MSG_RESULT([yes])
@@ -563,49 +550,141 @@ if test "$enable_lto" != "no" ; then
 fi
 
 
-
-AC_MSG_CHECKING([whether $CC supports -Wno-pointer-sign])
-OLD_CFLAGS="$CFLAGS"
-CFLAGS="$CFLAGS -Wno-pointer-sign"
-AC_COMPILE_IFELSE(
-	[AC_LANG_SOURCE([int foo;])],
+AC_DEFUN(AC_CHECK_COMPILER_WFLAG,
 	[
-		AC_MSG_RESULT([yes])
-		AC_MSG_CHECKING([whether $CC can actually use -Wno-pointer-sign])
-		# This option causes warnings in C++ mode
-		# Note: -Werror must be before -Wno-pointer-sign, otherwise it does not do anything
-		CFLAGS="$OLD_CFLAGS -Werror -Wno-pointer-sign"
+		AC_MSG_CHECKING([whether $CC supports -W$1])
+		OLD_CFLAGS="$CFLAGS"
+		CFLAGS="$CFLAGS -Werror -W$1"
 		AC_COMPILE_IFELSE(
 			[AC_LANG_SOURCE([int foo;])],
 			[
 				AC_MSG_RESULT([yes])
-				CFLAGS="$OLD_CFLAGS -Wno-pointer-sign"
+				CFLAGS="$OLD_CFLAGS -W$1"
+				# Optionally, run a test
+				if test "x$2" != "x"; then
+					AC_MSG_CHECKING([whether $CC can actually use -W$1])
+					CFLAGS="$OLD_CFLAGS -Werror -W$1"
+					AC_COMPILE_IFELSE(
+						[AC_LANG_SOURCE([$2])],
+						[
+							AC_MSG_RESULT([no])
+							CFLAGS="$OLD_CFLAGS"
+						]
+						[
+							AC_MSG_RESULT([yes])
+							CFLAGS="$OLD_CFLAGS -W$1"
+						],
+					)
+				fi
 			],
 			[
 				AC_MSG_RESULT([no])
 				CFLAGS="$OLD_CFLAGS"
 			]
 		)
-	],
-	[
-		AC_MSG_RESULT([no])
-		CFLAGS="$OLD_CFLAGS"
 	]
 )
 
-
-AC_MSG_CHECKING([whether $CC supports -Wno-switch])
-OLD_CFLAGS="$CFLAGS"
-CFLAGS="$CFLAGS -Wno-switch"
-AC_COMPILE_IFELSE(
-	[AC_LANG_SOURCE([int foo;])],
-	[AC_MSG_RESULT([yes])],
+AC_DEFUN(AC_CHECK_COMPILER_WNOFLAG,
 	[
-		AC_MSG_RESULT([no])
-		CFLAGS="$OLD_CFLAGS"
+		AC_MSG_CHECKING([whether $CC supports -Wno-$1])
+		OLD_CFLAGS="$CFLAGS"
+		CFLAGS="$CFLAGS -Werror -Wno-$1"
+		AC_COMPILE_IFELSE(
+			[AC_LANG_SOURCE([int foo;])],
+			[
+				# Recent versions of gcc don't fail if -Wno-foo is not recognized
+				# (unless there are also other warnings), so we also check for -Wfoo
+				# which always fails if not supported
+				CFLAGS="$OLD_CFLAGS -Werror -W$1"
+				AC_COMPILE_IFELSE(
+					[AC_LANG_SOURCE([int foo;])],
+					[
+						AC_MSG_RESULT([yes])
+						CFLAGS="$OLD_CFLAGS -Wno-$1"
+						# Optionally, run a test
+						if test "x$2" != "x"; then
+							AC_MSG_CHECKING([whether $CC can actually use -Wno-$1])
+							CFLAGS="$OLD_CFLAGS -Werror -W$1"
+							AC_COMPILE_IFELSE(
+								[AC_LANG_SOURCE([$2])],
+								[
+									AC_MSG_RESULT([not needed but enabled])
+									CFLAGS="$OLD_CFLAGS"
+								],
+								[
+									CFLAGS="$OLD_CFLAGS -Werror -Wno-$1"
+									AC_COMPILE_IFELSE(
+										[AC_LANG_SOURCE([$2])],
+										[
+											AC_MSG_RESULT([yes])
+											CFLAGS="$OLD_CFLAGS -Wno-$1"
+										],
+										[
+											AC_MSG_RESULT([no])
+											CFLAGS="$OLD_CFLAGS"
+										]
+									)
+								]
+							)
+						fi
+					],
+					[
+						AC_MSG_RESULT([no])
+						CFLAGS="$OLD_CFLAGS"
+					]
+				)
+			],
+			[
+				AC_MSG_RESULT([no])
+				CFLAGS="$OLD_CFLAGS"
+			]
+		)
 	]
 )
 
+AC_CHECK_COMPILER_WNOFLAG(unused-parameter, [int foo(int bar) { return 0; }])
+AC_CHECK_COMPILER_WNOFLAG(maybe-uninitialized)
+AC_CHECK_COMPILER_WNOFLAG(clobbered)
+AC_CHECK_COMPILER_WFLAG(empty-body)
+AC_CHECK_COMPILER_WFLAG(newline-eof)
+AC_CHECK_COMPILER_WFLAG(int-conversion)
+AC_CHECK_COMPILER_WFLAG(enum-conversion)
+AC_CHECK_COMPILER_WFLAG(shorten-64-to-32)
+AC_CHECK_COMPILER_WFLAG(constant-conversion)
+AC_CHECK_COMPILER_WFLAG(bool-conversion)
+AC_CHECK_COMPILER_WNOFLAG(switch)
+AC_CHECK_COMPILER_WNOFLAG(missing-field-initializers)
+
+# Certain versions of gcc make -Wshadow completely useless by making it flood
+# you with unnecessary warnings <https://lkml.org/lkml/2006/11/28/239>
+# Let's check if we can really use it
+SAVED_OLD_CFLAGS="$CFLAGS"
+AC_CHECK_COMPILER_WFLAG(shadow)
+if test "x$CFLAGS" != "x$SAVED_OLD_CFLAGS"; then
+	AC_MSG_CHECKING([whether $CC can efficiently use -Wshadow])
+	NEW_CFLAGS="$CFLAGS"
+	CFLAGS="$CFLAGS -Werror -Wshadow"
+	AC_COMPILE_IFELSE(
+		[AC_LANG_SOURCE([
+			int foo(void) {
+				return 0;
+			}
+			int bar(void) {
+				int foo = 0;
+				return foo + 1;
+			}
+		])],
+		[
+			AC_MSG_RESULT([yes])
+			CFLAGS="$NEW_CFLAGS"
+		],
+		[
+			AC_MSG_RESULT([no])
+			CFLAGS="$SAVED_OLD_CFLAGS"
+		]
+	)
+fi
 
 AC_MSG_CHECKING([whether $CC supports -fPIC])
 OLD_CFLAGS="$CFLAGS"
@@ -870,7 +949,7 @@ fi
 case $enable_debug in
 	"no")
 		# default value
-		CFLAGS="$CFLAGS -Wno-unused -Wno-parentheses"
+#		CFLAGS="$CFLAGS -Wno-unused -Wno-parentheses"
 		;;
 	"yes")
 		CFLAGS="$CFLAGS -g -DDEBUG"
@@ -1123,6 +1202,9 @@ CYGWIN*)
 	fd_setsize="done"
 	DLLEXT=".dll"
 	;;
+Darwin*)
+	DLLEXT=".dylib"
+	;;
 esac
 AC_SUBST([DLLEXT])
 
diff --git a/src/char/char.c b/src/char/char.c
index 6534f484c..8d7ff1ab4 100644
--- a/src/char/char.c
+++ b/src/char/char.c
@@ -331,15 +331,15 @@ void set_char_offline(int char_id, int account_id)
 static int char_db_setoffline(DBKey key, DBData *data, va_list ap)
 {
 	struct online_char_data* character = (struct online_char_data*)DB->data2ptr(data);
-	int server = va_arg(ap, int);
-	if (server == -1) {
+	int server_id = va_arg(ap, int);
+	if (server_id == -1) {
 		character->char_id = -1;
 		character->server = -1;
 		if(character->waiting_disconnect != INVALID_TIMER){
 			timer->delete(character->waiting_disconnect, chardb_waiting_disconnect);
 			character->waiting_disconnect = INVALID_TIMER;
 		}
-	} else if (character->server == server)
+	} else if (character->server == server_id)
 		character->server = -2; //In some map server that we aren't connected to.
 	return 0;
 }
@@ -2209,7 +2209,6 @@ void loginif_on_ready(void)
 
 int parse_fromlogin(int fd) {
 	struct char_session_data* sd = NULL;
-	int i;
 
 	// only process data from the login-server
 	if( fd != login_fd ) {
@@ -2242,10 +2241,9 @@ int parse_fromlogin(int fd) {
 		uint16 command = RFIFOW(fd,0);
 		
 		if( HPM->packetsc[hpParse_FromLogin] ) {
-			if( (i = HPM->parse_packets(fd,hpParse_FromLogin)) ) {
-				if( i == 1 ) continue;
-				if( i == 2 ) return 0;
-			}
+			int success = HPM->parse_packets(fd,hpParse_FromLogin);
+			if( success == 1 ) continue;
+			else if( success == 2 ) return 0;
 		}
 		
 		switch( command ) {
@@ -2316,6 +2314,8 @@ int parse_fromlogin(int fd) {
 			break;
 
 			case 0x2717: // account data
+			{
+				int i;
 				if (RFIFOREST(fd) < 72)
 					return 0;
 
@@ -2358,6 +2358,7 @@ int parse_fromlogin(int fd) {
 					}
 				}
 				RFIFOSKIP(fd,72);
+			}
 			break;
 
 			// login-server alive packet
@@ -2385,6 +2386,7 @@ int parse_fromlogin(int fd) {
 					int class_[MAX_CHARS];
 					int guild_id[MAX_CHARS];
 					int num;
+					int i;
 					char* data;
 
 					struct auth_node* node = (struct auth_node*)idb_get(auth_db, acc);
@@ -3209,7 +3211,7 @@ int parse_frommap(int fd)
 
 				SQL->EscapeStringLen(sql_handle, esc_name, name, strnlen(name, NAME_LENGTH));
 				
-				if( SQL_ERROR == SQL->Query(sql_handle, "SELECT `account_id`,`name`,`char_id`,`unban_time` FROM `%s` WHERE `name` = '%s'", char_db, esc_name) )
+				if( SQL_ERROR == SQL->Query(sql_handle, "SELECT `account_id`,`char_id`,`unban_time` FROM `%s` WHERE `name` = '%s'", char_db, esc_name) )
 					Sql_ShowDebug(sql_handle);
 				else if( SQL->NumRows(sql_handle) == 0 ) {
 					result = 1; // 1-player not found
@@ -3217,15 +3219,13 @@ int parse_frommap(int fd)
 					Sql_ShowDebug(sql_handle);
 					result = 1; // 1-player not found
 				} else {
-					char name[NAME_LENGTH];
 					int account_id, char_id;
 					char* data;
 					time_t unban_time;
 
 					SQL->GetData(sql_handle, 0, &data, NULL); account_id = atoi(data);
-					SQL->GetData(sql_handle, 1, &data, NULL); safestrncpy(name, data, sizeof(name));
-					SQL->GetData(sql_handle, 2, &data, NULL); char_id = atoi(data);
-					SQL->GetData(sql_handle, 3, &data, NULL); unban_time = atol(data);
+					SQL->GetData(sql_handle, 1, &data, NULL); char_id = atoi(data);
+					SQL->GetData(sql_handle, 2, &data, NULL); unban_time = atol(data);
 
 					if( login_fd <= 0 )
 						result = 3; // 3-login-server offline
@@ -3465,7 +3465,6 @@ int parse_frommap(int fd)
 				{
 					struct status_change_data data;
 					StringBuf buf;
-					int i;
 
 					StrBuf->Init(&buf);
 					StrBuf->Printf(&buf, "INSERT INTO `%s` (`account_id`, `char_id`, `type`, `tick`, `val1`, `val2`, `val3`, `val4`) VALUES ", scdata_db);
@@ -3905,7 +3904,6 @@ static void char_delete2_cancel(int fd, struct char_session_data* sd)
 
 int parse_char(int fd)
 {
-	int i;
 	char email[40];
 	unsigned short cmd;
 	int map_fd;
@@ -3937,10 +3935,9 @@ int parse_char(int fd)
 		#define FIFOSD_CHECK(rest) do { if(RFIFOREST(fd) < (rest)) return 0; if (sd==NULL || !sd->auth) { RFIFOSKIP(fd,(rest)); return 0; } } while (0)
 
 		if( HPM->packetsc[hpParse_Char] ) {
-			if( (i = HPM->parse_packets(fd,hpParse_Char)) ) {
-				if( i == 1 ) continue;
-				if( i == 2 ) return 0;
-			}
+			int success = HPM->parse_packets(fd,hpParse_Char);
+			if( success == 1 ) continue;
+			else if( success == 2 ) return 0;
 		}
 		
 		cmd = RFIFOW(fd,0);
@@ -4043,6 +4040,7 @@ int parse_char(int fd)
 				uint32 subnet_map_ip;
 				struct auth_node* node;
 				int server_id = 0;
+				int i;
 
 				int slot = RFIFOB(fd,2);
 				RFIFOSKIP(fd,3);
@@ -4214,31 +4212,35 @@ int parse_char(int fd)
 	#if PACKETVER >= 20120307
 			// S 0970 <name>.24B <slot>.B <hair color>.W <hair style>.W
 			case 0x970:
+			{
+				int result;
 				FIFOSD_CHECK(31);
 	#else
 			// S 0067 <name>.24B <str>.B <agi>.B <vit>.B <int>.B <dex>.B <luk>.B <slot>.B <hair color>.W <hair style>.W
 			case 0x67:
+			{
+				int result;
 				FIFOSD_CHECK(37);
 	#endif
 
 				if( !char_new ) //turn character creation on/off [Kevin]
-					i = -2;
+					result = -2;
 				else
 	#if PACKETVER >= 20120307
-					i = make_new_char_sql(sd, (char*)RFIFOP(fd,2),RFIFOB(fd,26),RFIFOW(fd,27),RFIFOW(fd,29));
+					result = make_new_char_sql(sd, (char*)RFIFOP(fd,2),RFIFOB(fd,26),RFIFOW(fd,27),RFIFOW(fd,29));
 	#else
-					i = make_new_char_sql(sd, (char*)RFIFOP(fd,2),RFIFOB(fd,26),RFIFOB(fd,27),RFIFOB(fd,28),RFIFOB(fd,29),RFIFOB(fd,30),RFIFOB(fd,31),RFIFOB(fd,32),RFIFOW(fd,33),RFIFOW(fd,35));
+					result = make_new_char_sql(sd, (char*)RFIFOP(fd,2),RFIFOB(fd,26),RFIFOB(fd,27),RFIFOB(fd,28),RFIFOB(fd,29),RFIFOB(fd,30),RFIFOB(fd,31),RFIFOB(fd,32),RFIFOW(fd,33),RFIFOW(fd,35));
 	#endif
 
 				//'Charname already exists' (-1), 'Char creation denied' (-2) and 'You are underaged' (-3)
-				if (i < 0) {
+				if (result < 0) {
 					WFIFOHEAD(fd,3);
 					WFIFOW(fd,0) = 0x6e;
 					/* Others I found [Ind] */
 					/* 0x02 = Symbols in Character Names are forbidden */
 					/* 0x03 = You are not elegible to open the Character Slot. */
 					/* 0x0B = This service is only available for premium users.  */
-					switch (i) {
+					switch (result) {
 						case -1: WFIFOB(fd,2) = 0x00; break;
 						case -2: WFIFOB(fd,2) = 0xFF; break;
 						case -3: WFIFOB(fd,2) = 0x01; break;
@@ -4249,7 +4251,7 @@ int parse_char(int fd)
 					int len;
 					// retrieve data
 					struct mmo_charstatus char_dat;
-					mmo_char_fromsql(i, &char_dat, false); //Only the short data is needed.
+					mmo_char_fromsql(result, &char_dat, false); //Only the short data is needed.
 
 					// send to player
 					WFIFOHEAD(fd,2+MAX_CHAR_BUF);
@@ -4258,13 +4260,14 @@ int parse_char(int fd)
 					WFIFOSET(fd,len);
 
 					// add new entry to the chars list
-					sd->found_char[char_dat.slot] = i; // the char_id of the new char
+					sd->found_char[char_dat.slot] = result; // the char_id of the new char
 				}
 	#if PACKETVER >= 20120307
 				RFIFOSKIP(fd,31);
 	#else
 				RFIFOSKIP(fd,37);
 	#endif
+			}
 			break;
 
 			// delete char
@@ -4275,6 +4278,7 @@ int parse_char(int fd)
 				if (cmd == 0x1fb) FIFOSD_CHECK(56);
 			{
 				int cid = RFIFOL(fd,2);
+				int i;
 #if PACKETVER >= 20110309
 				if( *pincode->enabled ){ // hack check
 					struct online_char_data* character;	
@@ -4483,6 +4487,7 @@ int parse_char(int fd)
 			{
 				char* l_user = (char*)RFIFOP(fd,2);
 				char* l_pass = (char*)RFIFOP(fd,26);
+				int i;
 				l_user[23] = '\0';
 				l_pass[23] = '\0';
 				ARR_FIND( 0, ARRAYLENGTH(server), i, server[i].fd <= 0 );
diff --git a/src/char/int_guild.c b/src/char/int_guild.c
index 5f033f4d7..6bd8ca568 100644
--- a/src/char/int_guild.c
+++ b/src/char/int_guild.c
@@ -447,16 +447,16 @@ struct guild * inter_guild_fromsql(int guild_id)
 	while( SQL_SUCCESS == SQL->NextRow(sql_handle) )
 	{
 		int position;
-		struct guild_position* p;
+		struct guild_position *pos;
 
 		SQL->GetData(sql_handle, 0, &data, NULL); position = atoi(data);
 		if( position < 0 || position >= MAX_GUILDPOSITION )
 			continue;// invalid position
-		p = &g->position[position];
-		SQL->GetData(sql_handle, 1, &data, &len); memcpy(p->name, data, min(len, NAME_LENGTH));
-		SQL->GetData(sql_handle, 2, &data, NULL); p->mode = atoi(data);
-		SQL->GetData(sql_handle, 3, &data, NULL); p->exp_mode = atoi(data);
-		p->modified = GS_POSITION_UNMODIFIED;
+		pos = &g->position[position];
+		SQL->GetData(sql_handle, 1, &data, &len); memcpy(pos->name, data, min(len, NAME_LENGTH));
+		SQL->GetData(sql_handle, 2, &data, NULL); pos->mode = atoi(data);
+		SQL->GetData(sql_handle, 3, &data, NULL); pos->exp_mode = atoi(data);
+		pos->modified = GS_POSITION_UNMODIFIED;
 	}
 
 	//printf("- Read guild_alliance %d from sql \n",guild_id);
@@ -1664,7 +1664,7 @@ static int mapif_parse_GuildDeleteAlliance(struct guild *g, int guild_id, int ac
 int mapif_parse_GuildAlliance(int fd,int guild_id1,int guild_id2,int account_id1,int account_id2,int flag)
 {
 	// Could speed up
-	struct guild *g[2];
+	struct guild *g[2] = { NULL };
 	int j,i;
 	g[0] = inter_guild_fromsql(guild_id1);
 	g[1] = inter_guild_fromsql(guild_id2);
@@ -1675,25 +1675,19 @@ int mapif_parse_GuildAlliance(int fd,int guild_id1,int guild_id2,int account_id1
 	if(g[0]==NULL || g[1]==NULL)
 		return 0;
 
-	if(flag&GUILD_ALLIANCE_REMOVE)
-	{
+	if( flag&GUILD_ALLIANCE_REMOVE ) {
 		// Remove alliance/opposition, in case of alliance, remove on both side
-		for(i=0;i<2-(flag&GUILD_ALLIANCE_TYPE_MASK);i++)
-		{
+		for( i = 0; i < ((flag&GUILD_ALLIANCE_TYPE_MASK) ? 1 : 2); i++ ) {
 			ARR_FIND( 0, MAX_GUILDALLIANCE, j, g[i]->alliance[j].guild_id == g[1-i]->guild_id && g[i]->alliance[j].opposition == (flag&GUILD_ALLIANCE_TYPE_MASK) );
 			if( j < MAX_GUILDALLIANCE )
 				g[i]->alliance[j].guild_id = 0;
 		}
-	}
-	else
-	{
+	} else {
 		// Add alliance, in case of alliance, add on both side
-		for(i=0;i<2-(flag&GUILD_ALLIANCE_TYPE_MASK);i++)
-		{
+		for( i = 0; i < ((flag&GUILD_ALLIANCE_TYPE_MASK) ? 1 : 2); i++ ) {
 			// Search an empty slot
 			ARR_FIND( 0, MAX_GUILDALLIANCE, j, g[i]->alliance[j].guild_id == 0 );
-			if( j < MAX_GUILDALLIANCE )
-			{
+			if( j < MAX_GUILDALLIANCE ) {
 				g[i]->alliance[j].guild_id=g[1-i]->guild_id;
 				memcpy(g[i]->alliance[j].name,g[1-i]->name,NAME_LENGTH);
 				// Set alliance type
diff --git a/src/char/int_quest.c b/src/char/int_quest.c
index ce63a5581..f8a05bc8f 100644
--- a/src/char/int_quest.c
+++ b/src/char/int_quest.c
@@ -38,6 +38,7 @@ struct quest *mapif_quests_fromsql(int char_id, int *count) {
 	stmt = SQL->StmtMalloc(sql_handle);
 	if (stmt == NULL) {
 		SqlStmt_ShowDebug(stmt);
+		*count = 0;
 		return NULL;
 	}
 
diff --git a/src/char/inter.c b/src/char/inter.c
index 771b51602..63e1564ff 100644
--- a/src/char/inter.c
+++ b/src/char/inter.c
@@ -872,7 +872,7 @@ int inter_mapif_init(int fd)
 //--------------------------------------------------------
 
 // broadcast sending
-int mapif_broadcast(unsigned char *mes, int len, unsigned long fontColor, short fontType, short fontSize, short fontAlign, short fontY, int sfd)
+int mapif_broadcast(unsigned char *mes, int len, unsigned int fontColor, short fontType, short fontSize, short fontAlign, short fontY, int sfd)
 {
 	unsigned char *buf = (unsigned char*)aMalloc((len)*sizeof(unsigned char));
 
diff --git a/src/common/HPM.h b/src/common/HPM.h
index 5466693ab..d5a5cbb6a 100644
--- a/src/common/HPM.h
+++ b/src/common/HPM.h
@@ -28,8 +28,10 @@
 	#define plugin_import(x,y,z)   (z)dlsym((x),(y))
 	#define plugin_close(x)        dlclose(x)
 
-	#ifdef CYGWIN
+	#if defined CYGWIN
 		#define DLL_EXT        ".dll"
+	#elif defined __DARWIN__
+		#define DLL_EXT        ".dylib"
 	#else
 		#define DLL_EXT        ".so"
 	#endif
diff --git a/src/common/Makefile.in b/src/common/Makefile.in
index 1e23ab5e8..7bb9ae630 100644
--- a/src/common/Makefile.in
+++ b/src/common/Makefile.in
@@ -15,8 +15,8 @@ MT19937AR_H = $(MT19937AR_D)/mt19937ar.h
 MT19937AR_INCLUDE = -I$(MT19937AR_D)
 
 COMMON_SHARED_C = conf.c db.c des.c ers.c grfio.c HPM.c mapindex.c md5calc.c \
-                  mempool.c mutex.c nullpo.c raconf.c random.c showmsg.c strlib.c \
-                  thread.c timer.c utils.c
+                  mutex.c nullpo.c random.c showmsg.c strlib.c thread.c \
+                  timer.c utils.c
 COMMON_C = $(COMMON_SHARED_C)
 COMMON_SHARED_OBJ = $(patsubst %.c,%.o,$(COMMON_SHARED_C))
 COMMON_OBJ = $(addprefix obj_all/, $(COMMON_SHARED_OBJ) \
@@ -25,9 +25,8 @@ COMMON_MINI_OBJ = $(addprefix obj_all/, $(COMMON_SHARED_OBJ) \
                   miniconsole.o minicore.o minimalloc.o minisocket.o)
 COMMON_C += console.c core.c malloc.c socket.c
 COMMON_H = atomic.h cbasetypes.h conf.h console.h core.h db.h des.h ers.h \
-           evdp.h grfio.h HPM.h HPMi.h malloc.h mapindex.h md5calc.h \
-           mempool.h mmo.h mutex.h netbuffer.h network.h nullpo.h raconf.h \
-           random.h showmsg.h socket.h spinlock.h sql.h strlib.h \
+           grfio.h HPM.h HPMi.h malloc.h mapindex.h md5calc.h mmo.h mutex.h \
+           nullpo.h random.h showmsg.h socket.h spinlock.h sql.h strlib.h \
            thread.h timer.h utils.h winapi.h
 
 COMMON_SQL_OBJ = obj_sql/sql.o
diff --git a/src/common/cbasetypes.h b/src/common/cbasetypes.h
index 6de2ace01..120f4f861 100644
--- a/src/common/cbasetypes.h
+++ b/src/common/cbasetypes.h
@@ -255,6 +255,13 @@ typedef uintptr_t uintptr;
 #define ra_align(n) __attribute__(( aligned(n) ))
 #endif
 
+// Directives for the (clang) static analyzer
+#ifdef __clang__
+#define analyzer_noreturn __attribute__((analyzer_noreturn))
+#else
+#define analyzer_noreturn
+#endif
+
 
 /////////////////////////////
 // for those still not building c++
@@ -353,23 +360,6 @@ typedef char bool;
 #endif
 
 //////////////////////////////////////////////////////////////////////////
-// Assert
-
-#if ! defined(Assert)
-#if defined(RELEASE)
-#define Assert(EX)
-#else
-// extern "C" {
-#include <assert.h>
-// }
-#if !defined(DEFCPP) && defined(WIN32) && !defined(MINGW)
-#include <crtdbg.h>
-#endif
-#define Assert(EX) assert(EX)
-#endif
-#endif /* ! defined(Assert) */
-
-//////////////////////////////////////////////////////////////////////////
 // Has to be unsigned to avoid problems in some systems
 // Problems arise when these functions expect an argument in the range [0,256[ and are fed a signed char.
 #include <ctype.h>
@@ -405,7 +395,7 @@ typedef char bool;
 
 
 //////////////////////////////////////////////////////////////////////////
-// Use the preprocessor to 'stringify' stuff (concert to a string).
+// Use the preprocessor to 'stringify' stuff (convert to a string).
 // example:
 //   #define TESTE blabla
 //   QUOTE(TESTE) -> "TESTE"
diff --git a/src/common/core.c b/src/common/core.c
index dd839b372..8178a48a5 100644
--- a/src/common/core.c
+++ b/src/common/core.c
@@ -15,7 +15,6 @@
 	#include "../common/socket.h"
 	#include "../common/timer.h"
 	#include "../common/thread.h"
-	#include "../common/mempool.h"
 	#include "../common/sql.h"
 	#include "../config/core.h"
 	#include "../common/HPM.h"
@@ -328,7 +327,6 @@ int main (int argc, char **argv) {
 
 	Sql_Init();
 	rathread_init();
-	mempool_init();
 	DB->init();
 	signals_init();
 	
@@ -370,7 +368,6 @@ int main (int argc, char **argv) {
 	timer->final();
 	socket_final();
 	DB->final();
-	mempool_final();
 	rathread_final();
 #endif
 
diff --git a/src/common/db.h b/src/common/db.h
index b9d6af382..5f4478909 100644
--- a/src/common/db.h
+++ b/src/common/db.h
@@ -1121,8 +1121,10 @@ void  linkdb_foreach (struct linkdb_node** head, LinkDBFunc func, ...);
 #define VECTOR_ENSURE(__vec,__n,__step) \
 	do{ \
 		size_t _empty_ = VECTOR_CAPACITY(__vec)-VECTOR_LENGTH(__vec); \
-		while( (__n) > _empty_ ) _empty_ += (__step); \
-		if( _empty_ != VECTOR_CAPACITY(__vec)-VECTOR_LENGTH(__vec) ) VECTOR_RESIZE(__vec,_empty_+VECTOR_LENGTH(__vec)); \
+		if( (__n) > _empty_ ) { \
+			while( (__n) > _empty_ ) _empty_ += (__step); \
+			VECTOR_RESIZE(__vec,_empty_+VECTOR_LENGTH(__vec)); \
+		} \
 	}while(0)
 
 
diff --git a/src/common/grfio.c b/src/common/grfio.c
index 77b976926..57e8a5187 100644
--- a/src/common/grfio.c
+++ b/src/common/grfio.c
@@ -8,6 +8,7 @@
 #include "../common/showmsg.h"
 #include "../common/strlib.h"
 #include "../common/utils.h"
+#include "../common/nullpo.h"
 #include "grfio.h"
 
 #include <stdio.h>
@@ -305,17 +306,21 @@ static FILELIST* filelist_find(const char* fname)
 // returns the original file name
 char* grfio_find_file(const char* fname)
 {
-	FILELIST *filelist = filelist_find(fname);
-	if (!filelist) return NULL;
-	return (!filelist->fnd ? filelist->fn : filelist->fnd);
+	FILELIST *flist = filelist_find(fname);
+	if (!flist) return NULL;
+	return (!flist->fnd ? flist->fn : flist->fnd);
 }
 
 // adds a FILELIST entry into the list of loaded files
-static FILELIST* filelist_add(FILELIST* entry)
-{
+static FILELIST* filelist_add(FILELIST* entry) {
 	int hash;
+	nullpo_ret(entry);
+#ifdef __clang_analyzer__
+	// Make clang's static analyzer shut up about a possible NULL pointer in &filelist[filelist_entrys]
+	nullpo_ret(&filelist[filelist_entrys]);
+#endif // __clang_analyzer__
 
-	#define	FILELIST_ADDS	1024	// number increment of file lists `
+#define FILELIST_ADDS 1024 // number increment of file lists `
 
 	if (filelist_entrys >= filelist_maxentry) {
 		filelist = (FILELIST *)aRealloc(filelist, (filelist_maxentry + FILELIST_ADDS) * sizeof(FILELIST));
@@ -323,7 +328,9 @@ static FILELIST* filelist_add(FILELIST* entry)
 		filelist_maxentry += FILELIST_ADDS;
 	}
 
-	memcpy (&filelist[filelist_entrys], entry, sizeof(FILELIST));
+#undef FILELIST_ADDS
+
+	memcpy(&filelist[filelist_entrys], entry, sizeof(FILELIST));
 
 	hash = filehash(entry->fn);
 	filelist[filelist_entrys].next = filelist_hash[hash];
@@ -405,7 +412,7 @@ void* grfio_reads(const char* fname, int* size)
 		if( in != NULL ) {
 			int declen;
 			fseek(in,0,SEEK_END);
-			declen = ftell(in);
+			declen = (int)ftell(in);
 			fseek(in,0,SEEK_SET);
 			buf2 = (unsigned char *)aMalloc(declen+1);  // +1 for resnametable zero-termination
 			if(fread(buf2, 1, declen, in) != (size_t)declen) ShowError("An error occured in fread grfio_reads, fname=%s \n",fname);
diff --git a/src/common/malloc.c b/src/common/malloc.c
index 1cb7836ab..23e28a65f 100644
--- a/src/common/malloc.c
+++ b/src/common/malloc.c
@@ -669,7 +669,7 @@ void memmgr_report (int extra) {
 	struct {
 		const char *file;
 		unsigned short line;
-		unsigned int size;
+		size_t size;
 		unsigned int count;
 	} data[100];
 	memset(&data, 0, sizeof(data));
diff --git a/src/common/mmo.h b/src/common/mmo.h
index 47257265f..b33b01fa7 100644
--- a/src/common/mmo.h
+++ b/src/common/mmo.h
@@ -284,7 +284,8 @@ struct accreg {
 // For saving status changes across sessions. [Skotlex]
 struct status_change_data {
 	unsigned short type; //SC_type
-	long val1, val2, val3, val4, tick; //Remaining duration.
+	int val1, val2, val3, val4;
+	unsigned int tick; //Remaining duration.
 };
 
 struct storage_data {
diff --git a/src/common/nullpo.c b/src/common/nullpo.c
index 4383109a7..20180dd3b 100644
--- a/src/common/nullpo.c
+++ b/src/common/nullpo.c
@@ -4,88 +4,26 @@
 #include <stdio.h>
 #include <stdarg.h>
 #include <string.h>
-#include "nullpo.h"
+#include "../common/nullpo.h"
 #include "../common/showmsg.h"
-// #include "logs.h" // •z�΂µ‚Ä‚Ý‚é
 
-static void nullpo_info_core(const char *file, int line, const char *func, 
-                             const char *fmt, va_list ap);
-
-/*======================================
- * Nullƒ`ƒFƒbƒN ‹y‚Ñ �î•ñ�o—Í
- *--------------------------------------*/
-int nullpo_chk_f(const char *file, int line, const char *func, const void *target,
-                 const char *fmt, ...)
-{
-	va_list ap;
-	
-	if (target != NULL)
-		return 0;
-	
-	va_start(ap, fmt);
-	nullpo_info_core(file, line, func, fmt, ap);
-	va_end(ap);
-	return 1;
-}
-
-int nullpo_chk(const char *file, int line, const char *func, const void *target)
-{
-	if (target != NULL)
-		return 0;
-	
-	nullpo_info_core(file, line, func, NULL, NULL);
-	return 1;
-}
-
-
-/*======================================
- * nullpo�î•ñ�o—Í(ŠO•”ŒÄ�o‚µŒü‚¯ƒ‰ƒbƒp)
- *--------------------------------------*/
-void nullpo_info_f(const char *file, int line, const char *func, 
-                 const char *fmt, ...)
-{
-	va_list ap;
-	
-	va_start(ap, fmt);
-	nullpo_info_core(file, line, func, fmt, ap);
-	va_end(ap);
-}
-
-void nullpo_info(const char *file, int line, const char *func)
-{
-	nullpo_info_core(file, line, func, NULL, NULL);
-}
-
-
-/*======================================
- * nullpo�î•ñ�o—Í(Main)
- *--------------------------------------*/
-static void nullpo_info_core(const char *file, int line, const char *func, 
-                             const char *fmt, va_list ap)
-{
+/**
+ * Reports failed assertions or NULL pointers
+ * 
+ * @param file       Source file where the error was detected
+ * @param line       Line
+ * @param func       Function
+ * @param targetname Name of the checked symbol
+ * @param title      Message title to display (i.e. failed assertion or nullpo info)
+ */
+void assert_report(const char *file, int line, const char *func, const char *targetname, const char *title) {
 	if (file == NULL)
 		file = "??";
 	
-	func =
-		func == NULL    ? "unknown":
-		func[0] == '\0' ? "unknown":
-		                  func;
-	
-	ShowMessage("--- nullpo info --------------------------------------------\n");
-	ShowMessage("%s:%d: in func `%s'\n", file, line, func);
-	if (fmt != NULL)
-	{
-		if (fmt[0] != '\0')
-		{
-			vprintf(fmt, ap);
-			
-			// �ÅŒã‚ɉü�s‚µ‚½‚©Šm”F
-			if (fmt[strlen(fmt)-1] != '\n')
-				ShowMessage("\n");
-		}
-	}
-	ShowMessage("--- end nullpo info ----------------------------------------\n");
+	if (func == NULL || *func == '\0')
+		func = "unknown";
 	
-	// ‚±‚±‚ç‚Ånullpoƒ�ƒO‚ðƒtƒ@ƒCƒ‹‚É�‘‚«�o‚¹‚½‚ç
-	// ‚Ü‚Æ‚ß‚Ä’ñ�o‚Å‚«‚é‚È‚ÆŽv‚Á‚Ä‚¢‚½‚è�B
+	ShowError("--- %s --------------------------------------------\n", title);
+	ShowError("%s:%d: '%s' in function `%s'\n", file, line, targetname, func);
+	ShowError("--- end %s ----------------------------------------\n", title);
 }
diff --git a/src/common/nullpo.h b/src/common/nullpo.h
index 8ee86a782..ae39b1151 100644
--- a/src/common/nullpo.h
+++ b/src/common/nullpo.h
@@ -1,225 +1,127 @@
 // Copyright (c) Athena Dev Teams - Licensed under GNU GPL
 // For more information, see LICENCE in the main folder
 
-#ifndef _NULLPO_H_
-#define _NULLPO_H_
-
+#ifndef COMMON_NULLPO_H
+#define COMMON_NULLPO_H
 
 #include "../common/cbasetypes.h"
 
-#define NLP_MARK __FILE__, __LINE__, __func__
-
 // enabled by default on debug builds
 #if defined(DEBUG) && !defined(NULLPO_CHECK)
 #define NULLPO_CHECK
 #endif
 
-/*----------------------------------------------------------------------------
- * Macros
- *----------------------------------------------------------------------------
- */
-/*======================================
- * Nullƒ`ƒFƒbƒN ‹y‚Ñ �î•ñ�o—ÍŒã return
- *�E“WŠJ‚·‚é‚Æif‚Æ‚©return“™‚ª�o‚é‚Ì‚Å
- *  ˆê�s’P‘Ì‚ÅŽg‚Á‚Ä‚­‚¾‚³‚¢�B
- *�Enullpo_ret(x = func());
- *  ‚̂悤‚ÈŽg—p–@‚à‘z’肵‚Ä‚¢‚Ü‚·�B
- *--------------------------------------
- * nullpo_ret(t)
- *   –ß‚è’l 0ŒÅ’è
- * [ˆø�”]
- *  t       ƒ`ƒFƒbƒN‘Î�Û
- *--------------------------------------
- * nullpo_retv(t)
- *   –ß‚è’l ‚È‚µ
- * [ˆø�”]
- *  t       ƒ`ƒFƒbƒN‘Î�Û
- *--------------------------------------
- * nullpo_retr(ret, t)
- *   –ß‚è’l Žw’è
- * [ˆø�”]
- *  ret     return(ret);
- *  t       ƒ`ƒFƒbƒN‘Î�Û
- *--------------------------------------
- * nullpo_ret_f(t, fmt, ...)
- *   �Ú�×�î•ñ�o—Í—p
- *   –ß‚è’l 0
- * [ˆø�”]
- *  t       ƒ`ƒFƒbƒN‘Î�Û
- *  fmt ... vprintf‚É“n‚³‚ê‚é
- *    ”õ�l‚âŠÖŒW•Ï�”‚Ì�‘‚«�o‚µ‚È‚Ç‚É
- *--------------------------------------
- * nullpo_retv_f(t, fmt, ...)
- *   �Ú�×�î•ñ�o—Í—p
- *   –ß‚è’l ‚È‚µ
- * [ˆø�”]
- *  t       ƒ`ƒFƒbƒN‘Î�Û
- *  fmt ... vprintf‚É“n‚³‚ê‚é
- *    ”õ�l‚âŠÖŒW•Ï�”‚Ì�‘‚«�o‚µ‚È‚Ç‚É
- *--------------------------------------
- * nullpo_retr_f(ret, t, fmt, ...)
- *   �Ú�×�î•ñ�o—Í—p
- *   –ß‚è’l Žw’è
- * [ˆø�”]
- *  ret     return(ret);
- *  t       ƒ`ƒFƒbƒN‘Î�Û
- *  fmt ... vprintf‚É“n‚³‚ê‚é
- *    ”õ�l‚âŠÖŒW•Ï�”‚Ì�‘‚«�o‚µ‚È‚Ç‚É
- *--------------------------------------
- */
+// Skip assert checks on release builds
+#if !defined(RELEASE) && !defined(ASSERT_CHECK)
+#define ASSERT_CHECK
+#endif
+
+/** Assert */
+
+#if defined(ASSERT_CHECK)
+// extern "C" {
+#include <assert.h>
+// }
+#if !defined(DEFCPP) && defined(WIN32) && !defined(MINGW)
+#include <crtdbg.h>
+#endif // !DEFCPP && WIN && !MINGW
+#define Assert(EX) assert(EX)
+#define Assert_chk(EX) ( (EX) ? false : (assert_report(__FILE__, __LINE__, __func__, #EX, "failed assertion"), true) )
+#else // ! ASSERT_CHECK
+#define Assert(EX) (EX)
+#define Assert_chk(EX) ((EX), false)
+#endif // ASSERT_CHECK
 
 #if defined(NULLPO_CHECK)
+/**
+ * Reports NULL pointer information if the passed pointer is NULL
+ *
+ * @param t pointer to check
+ * @return true if the passed pointer is NULL, false otherwise
+ */
+#define nullpo_chk(t) ( (t) != NULL ? false : (assert_report(__FILE__, __LINE__, __func__, #t, "nullpo info"), true) )
+#else // ! NULLPO_CHECK
+#define nullpo_chk(t) ((t), false)
+#endif // NULLPO_CHECK
+
+/**
+ * The following macros check for NULL pointers and return from the current
+ * function or block in case one is found.
+ *
+ * It is guaranteed that the argument is evaluated once and only once, so it
+ * is safe to call them as:
+ * nullpo_ret(x = func());
+ * The macros can be used safely in any context, as they expand to a do/while
+ * construct, except nullpo_retb, which expands to an if/else construct.
+ */
 
+/**
+ * Returns 0 if a NULL pointer is found.
+ *
+ * @param t pointer to check
+ */
 #define nullpo_ret(t) \
-	if (nullpo_chk(NLP_MARK, (void *)(t))) {return(0);}
-
-#define nullpo_retv(t) \
-	if (nullpo_chk(NLP_MARK, (void *)(t))) {return;}
-
-#define nullpo_retr(ret, t) \
-	if (nullpo_chk(NLP_MARK, (void *)(t))) {return(ret);}
-
-#define nullpo_retb(t) \
-	if (nullpo_chk(NLP_MARK, (void *)(t))) {break;}
-
-// ‰Â•Ïˆø�”ƒ}ƒNƒ�‚ÉŠÖ‚·‚é�ðŒ�ƒRƒ“ƒpƒCƒ‹
-#if __STDC_VERSION__ >= 199901L
-/* C99‚ɑΉž */
-#define nullpo_ret_f(t, fmt, ...) \
-	if (nullpo_chk_f(NLP_MARK, (void *)(t), (fmt), __VA_ARGS__)) {return(0);}
-
-#define nullpo_retv_f(t, fmt, ...) \
-	if (nullpo_chk_f(NLP_MARK, (void *)(t), (fmt), __VA_ARGS__)) {return;}
-
-#define nullpo_retr_f(ret, t, fmt, ...) \
-	if (nullpo_chk_f(NLP_MARK, (void *)(t), (fmt), __VA_ARGS__)) {return(ret);}
-
-#define nullpo_retb_f(t, fmt, ...) \
-	if (nullpo_chk_f(NLP_MARK, (void *)(t), (fmt), __VA_ARGS__)) {break;}
+	do { if (nullpo_chk(t)) return(0); } while(0)
 
-#elif __GNUC__ >= 2
-/* GCC—p */
-#define nullpo_ret_f(t, fmt, args...) \
-	if (nullpo_chk_f(NLP_MARK, (void *)(t), (fmt), ## args)) {return(0);}
-
-#define nullpo_retv_f(t, fmt, args...) \
-	if (nullpo_chk_f(NLP_MARK, (void *)(t), (fmt), ## args)) {return;}
-
-#define nullpo_retr_f(ret, t, fmt, args...) \
-	if (nullpo_chk_f(NLP_MARK, (void *)(t), (fmt), ## args)) {return(ret);}
-
-#define nullpo_retb_f(t, fmt, args...) \
-	if (nullpo_chk_f(NLP_MARK, (void *)(t), (fmt), ## args)) {break;}
-
-#else
-
-/* ‚»‚Ì‘¼‚Ì�ê�‡�E�E�E orz */
-
-#endif
-
-#else /* NULLPO_CHECK */
-/* No Nullpo check */
-
-// if((t)){;}
-// —Ç‚¢•û–@‚ªŽv‚¢‚‚©‚È‚©‚Á‚½‚Ì‚Å�E�E�E‹ê“÷‚Ì�ô‚Å‚·�B
-// ˆê‰žƒ��[ƒjƒ“ƒO‚Í�o‚È‚¢‚Í‚¸
-
-#define nullpo_ret(t) (void)(t)
-#define nullpo_retv(t) (void)(t)
-#define nullpo_retr(ret, t) (void)(t)
-#define nullpo_retb(t) (void)(t)
-
-// ‰Â•Ïˆø�”ƒ}ƒNƒ�‚ÉŠÖ‚·‚é�ðŒ�ƒRƒ“ƒpƒCƒ‹
-#if __STDC_VERSION__ >= 199901L
-/* C99‚ɑΉž */
-#define nullpo_ret_f(t, fmt, ...) (void)(t)
-#define nullpo_retv_f(t, fmt, ...) (void)(t)
-#define nullpo_retr_f(ret, t, fmt, ...) (void)(t)
-#define nullpo_retb_f(t, fmt, ...) (void)(t)
-
-#elif __GNUC__ >= 2
-/* GCC—p */
-#define nullpo_ret_f(t, fmt, args...) (void)(t)
-#define nullpo_retv_f(t, fmt, args...) (void)(t)
-#define nullpo_retr_f(ret, t, fmt, args...) (void)(t)
-#define nullpo_retb_f(t, fmt, args...) (void)(t)
-
-#else
-/* ‚»‚Ì‘¼‚Ì�ê�‡�E�E�E orz */
-#endif
+/**
+ * Returns 0 if the given assertion fails.
+ *
+ * @param t statement to check
+ */
+#define Assert_ret(t) \
+	do { if (Assert_chk(t)) return(0); } while(0)
 
-#endif /* NULLPO_CHECK */
+/**
+ * Returns void if a NULL pointer is found.
+ *
+ * @param t pointer to check
+ */
+#define nullpo_retv(t) \
+	do { if (nullpo_chk(t)) return; } while(0)
 
-/*----------------------------------------------------------------------------
- * Functions
- *----------------------------------------------------------------------------
+/**
+ * Returns void if the given assertion fails.
+ *
+ * @param t statement to check
  */
-/*======================================
- * nullpo_chk
- *   Nullƒ`ƒFƒbƒN ‹y‚Ñ �î•ñ�o—Í
- * [ˆø�”]
- *  file    __FILE__
- *  line    __LINE__
- *  func    __func__ (ŠÖ�”–¼)
- *    ‚±‚ê‚ç‚É‚Í NLP_MARK ‚ðŽg‚¤‚Æ‚æ‚¢
- *  target  ƒ`ƒFƒbƒN‘Î�Û
- * [•Ô‚è’l]
- *  0 OK
- *  1 NULL
- *--------------------------------------
+#define Assert_retv(t) \
+	do { if (Assert_chk(t)) return; } while(0)
+
+/**
+ * Returns the given value if a NULL pointer is found.
+ *
+ * @param ret value to return
+ * @param t   pointer to check
  */
-int nullpo_chk(const char *file, int line, const char *func, const void *target);
-
-
-/*======================================
- * nullpo_chk_f
- *   Nullƒ`ƒFƒbƒN ‹y‚Ñ �Ú�ׂÈ�î•ñ�o—Í
- * [ˆø�”]
- *  file    __FILE__
- *  line    __LINE__
- *  func    __func__ (ŠÖ�”–¼)
- *    ‚±‚ê‚ç‚É‚Í NLP_MARK ‚ðŽg‚¤‚Æ‚æ‚¢
- *  target  ƒ`ƒFƒbƒN‘Î�Û
- *  fmt ... vprintf‚É“n‚³‚ê‚é
- *    ”õ�l‚âŠÖŒW•Ï�”‚Ì�‘‚«�o‚µ‚È‚Ç‚É
- * [•Ô‚è’l]
- *  0 OK
- *  1 NULL
- *--------------------------------------
+#define nullpo_retr(ret, t) \
+	do { if (nullpo_chk(t)) return(ret); } while(0)
+
+/**
+ * Returns the given value if the given assertion fails.
+ *
+ * @param ret value to return
+ * @param t   statement to check
  */
-int nullpo_chk_f(const char *file, int line, const char *func, const void *target,
-                 const char *fmt, ...)
-                 __attribute__((format(printf,5,6)));
-
-
-/*======================================
- * nullpo_info
- *   nullpo�î•ñ�o—Í
- * [ˆø�”]
- *  file    __FILE__
- *  line    __LINE__
- *  func    __func__ (ŠÖ�”–¼)
- *    ‚±‚ê‚ç‚É‚Í NLP_MARK ‚ðŽg‚¤‚Æ‚æ‚¢
- *--------------------------------------
+#define Assert_retr(ret, t) \
+	do { if (Assert_chk(t)) return(ret); } while(0)
+
+/**
+ * Breaks from the current loop/switch if a NULL pointer is found.
+ *
+ * @param t pointer to check
  */
-void nullpo_info(const char *file, int line, const char *func);
-
-
-/*======================================
- * nullpo_info_f
- *   nullpo�Ú�×�î•ñ�o—Í
- * [ˆø�”]
- *  file    __FILE__
- *  line    __LINE__
- *  func    __func__ (ŠÖ�”–¼)
- *    ‚±‚ê‚ç‚É‚Í NLP_MARK ‚ðŽg‚¤‚Æ‚æ‚¢
- *  fmt ... vprintf‚É“n‚³‚ê‚é
- *    ”õ�l‚âŠÖŒW•Ï�”‚Ì�‘‚«�o‚µ‚È‚Ç‚É
- *--------------------------------------
+#define nullpo_retb(t) \
+	if (nullpo_chk(t)) break; else (void)0
+
+/**
+ * Breaks from the current loop/switch if the given assertion fails.
+ *
+ * @param t statement to check
  */
-void nullpo_info_f(const char *file, int line, const char *func, 
-                   const char *fmt, ...)
-                   __attribute__((format(printf,4,5)));
+#define Assert_retb(t) \
+	if (Assert_chk(t)) break; else (void)0
+
 
+void assert_report(const char *file, int line, const char *func, const char *targetname, const char *title);
 
-#endif /* _NULLPO_H_ */
+#endif /* COMMON_NULLPO_H */
diff --git a/src/common/socket.c b/src/common/socket.c
index 2ae9d44b3..9c6938008 100644
--- a/src/common/socket.c
+++ b/src/common/socket.c
@@ -340,7 +340,7 @@ void set_eof(int fd)
 
 int recv_to_fifo(int fd)
 {
-	int len;
+	ssize_t len;
 
 	if( !session_isActive(fd) )
 		return -1;
@@ -377,7 +377,7 @@ int recv_to_fifo(int fd)
 
 int send_from_fifo(int fd)
 {
-	int len;
+	ssize_t len;
 
 	if( !session_isValid(fd) )
 		return -1;
@@ -855,6 +855,10 @@ int do_sockets(int next)
 			}
 		}
 
+#ifdef __clang_analyzer__
+		// Let Clang's static analyzer know this never happens (it thinks it might because of a NULL check in session_isValid)
+		if (!session[i]) continue;
+#endif // __clang_analyzer__
 		session[i]->func_parse(i);
 
 		if(!session[i])
@@ -1330,7 +1334,7 @@ int socket_getips(uint32* ips, int max)
 void socket_init(void)
 {
 	char *SOCKET_CONF_FILENAME = "conf/packet.conf";
-	unsigned int rlim_cur = FD_SETSIZE;
+	uint64 rlim_cur = FD_SETSIZE;
 
 #ifdef WIN32
 	{// Start up windows networking
@@ -1403,7 +1407,7 @@ void socket_init(void)
 	timer->add_interval(timer->gettick()+1000, connect_check_clear, 0, 0, 5*60*1000);
 #endif
 
-	ShowInfo("Server supports up to '"CL_WHITE"%u"CL_RESET"' concurrent connections.\n", rlim_cur);
+	ShowInfo("Server supports up to '"CL_WHITE"%lld"CL_RESET"' concurrent connections.\n", rlim_cur);
 	
 	/* Hercules Plugin Manager */
 	HPM->share(session,"session");
diff --git a/src/common/sql.c b/src/common/sql.c
index 0e06d6d18..79ccc8e92 100644
--- a/src/common/sql.c
+++ b/src/common/sql.c
@@ -1036,7 +1036,7 @@ void Sql_HerculesUpdateCheck(Sql* self) {
 		fseek (ufp,1,SEEK_SET);/* woo. skip the # */
 
 		if( fgets(timestamp,sizeof(timestamp),ufp) ) {
-			unsigned int timestampui = atol(timestamp);
+			unsigned int timestampui = (unsigned int)atol(timestamp);
 			if( SQL_ERROR == SQL->Query(self, "SELECT 1 FROM `sql_updates` WHERE `timestamp` = '%u' LIMIT 1", timestampui) )
 				Sql_ShowDebug(self);
 			if( Sql_NumRows(self) != 1 ) {
@@ -1079,7 +1079,7 @@ void Sql_HerculesUpdateSkip(Sql* self,const char *filename) {
 	fseek (ifp,1,SEEK_SET);/* woo. skip the # */
 	
 	if( fgets(timestamp,sizeof(timestamp),ifp) ) {
-		unsigned int timestampui = atol(timestamp);
+		unsigned int timestampui = (unsigned int)atol(timestamp);
 		if( SQL_ERROR == SQL->Query(self, "SELECT 1 FROM `sql_updates` WHERE `timestamp` = '%u' LIMIT 1", timestampui) )
 			Sql_ShowDebug(self);
 		else if( Sql_NumRows(self) == 1 ) {
diff --git a/src/common/strlib.c b/src/common/strlib.c
index e45cb0789..0f68eb206 100644
--- a/src/common/strlib.c
+++ b/src/common/strlib.c
@@ -952,7 +952,7 @@ bool sv_readdb(const char* directory, const char* filename, char delim, int minc
 		if( line[0] == '\0' || line[0] == '\n' || line[0] == '\r')
 			continue;
 
-		columns = sv_split(line, strlen(line), 0, delim, fields, fields_length, (e_svopt)(SV_TERMINATE_LF|SV_TERMINATE_CRLF));
+		columns = sv_split(line, (int)strlen(line), 0, delim, fields, fields_length, (e_svopt)(SV_TERMINATE_LF|SV_TERMINATE_CRLF));
 
 		if( columns < mincols ) {
 			ShowError("sv_readdb: Insufficient columns in line %d of \"%s\" (found %d, need at least %d).\n", lines, path, columns, mincols);
@@ -1018,7 +1018,8 @@ int StringBuf_Printf(StringBuf* self, const char* fmt, ...) {
 
 /// Appends the result of vprintf to the StringBuf
 int StringBuf_Vprintf(StringBuf* self, const char* fmt, va_list ap) {
-	int n, size, off;
+	int n, off;
+	size_t size;
 
 	for(;;) {
 		va_list apcopy;
@@ -1028,7 +1029,7 @@ int StringBuf_Vprintf(StringBuf* self, const char* fmt, va_list ap) {
 		n = vsnprintf(self->ptr_, size, fmt, apcopy);
 		va_end(apcopy);
 		/* If that worked, return the length. */
-		if( n > -1 && n < size ) {
+		if( n > -1 && (size_t)n < size ) {
 			self->ptr_ += n;
 			return (int)(self->ptr_ - self->buf_);
 		}
@@ -1042,11 +1043,11 @@ int StringBuf_Vprintf(StringBuf* self, const char* fmt, va_list ap) {
 
 /// Appends the contents of another StringBuf to the StringBuf
 int StringBuf_Append(StringBuf* self, const StringBuf* sbuf) {
-	int available = self->max_ - (self->ptr_ - self->buf_);
-	int needed = (int)(sbuf->ptr_ - sbuf->buf_);
+	size_t available = self->max_ - (self->ptr_ - self->buf_);
+	size_t needed = sbuf->ptr_ - sbuf->buf_;
 
 	if( needed >= available ) {
-		int off = (int)(self->ptr_ - self->buf_);
+		size_t off = (self->ptr_ - self->buf_);
 		self->max_ += needed;
 		self->buf_ = (char*)aRealloc(self->buf_, self->max_ + 1);
 		self->ptr_ = self->buf_ + off;
@@ -1059,12 +1060,12 @@ int StringBuf_Append(StringBuf* self, const StringBuf* sbuf) {
 
 // Appends str to the StringBuf
 int StringBuf_AppendStr(StringBuf* self, const char* str)  {
-	int available = self->max_ - (self->ptr_ - self->buf_);
-	int needed = (int)strlen(str);
+	size_t available = self->max_ - (self->ptr_ - self->buf_);
+	size_t needed = strlen(str);
 
 	if( needed >= available ) {
 		// not enough space, expand the buffer (minimum expansion = 1024)
-		int off = (int)(self->ptr_ - self->buf_);
+		size_t off = (self->ptr_ - self->buf_);
 		self->max_ += max(needed, 1024);
 		self->buf_ = (char*)aRealloc(self->buf_, self->max_ + 1);
 		self->ptr_ = self->buf_ + off;
diff --git a/src/common/timer.c b/src/common/timer.c
index e5cf5df2a..7f9e20dad 100644
--- a/src/common/timer.c
+++ b/src/common/timer.c
@@ -142,7 +142,7 @@ static void rdtsc_calibrate(){
  * platform-abstracted tick retrieval
  * @return server's current tick
  */
-static int64 tick(void) {
+static int64 sys_tick(void) {
 #if defined(WIN32)
 	// Windows: GetTickCount/GetTickCount64: Return the number of
 	//   milliseconds that have elapsed since the system was started.
@@ -206,7 +206,7 @@ static int gettick_count = 1;
 
 int64 timer_gettick_nocache(void) {
 	gettick_count = TICK_CACHE;
-	gettick_cache = tick();
+	gettick_cache = sys_tick();
 	return gettick_cache;
 }
 
@@ -219,11 +219,11 @@ int64 timer_gettick(void) {
 // tick doesn't get cached
 int64 timer_gettick_nocache(void)
 {
-	return tick();
+	return sys_tick();
 }
 
 int64 timer_gettick(void) {
-	return tick();
+	return sys_tick();
 }
 //////////////////////////////////////////////////////////////////////////
 #endif
diff --git a/src/config/renewal.h b/src/config/renewal.h
index a7fd22c37..3b11aff74 100644
--- a/src/config/renewal.h
+++ b/src/config/renewal.h
@@ -13,6 +13,7 @@
  * @INFO: This file holds general-purpose renewal settings, for class-specific ones check /src/config/classes folder
  **/
 
+//#define DISABLE_RENEWAL
 #ifndef DISABLE_RENEWAL
 
 /// game renewal server mode
diff --git a/src/login/account_sql.c b/src/login/account_sql.c
index 533b3d860..283eb3a0d 100644
--- a/src/login/account_sql.c
+++ b/src/login/account_sql.c
@@ -543,16 +543,16 @@ static bool mmo_auth_fromsql(AccountDB_SQL* db, struct mmo_account* acc, int acc
 	SQL->GetData(sql_handle,  3, &data, NULL); acc->sex = data[0];
 	SQL->GetData(sql_handle,  4, &data, NULL); safestrncpy(acc->email, data, sizeof(acc->email));
 	SQL->GetData(sql_handle,  5, &data, NULL); acc->group_id = atoi(data);
-	SQL->GetData(sql_handle,  6, &data, NULL); acc->state = strtoul(data, NULL, 10);
+	SQL->GetData(sql_handle,  6, &data, NULL); acc->state = (unsigned int)strtoul(data, NULL, 10);
 	SQL->GetData(sql_handle,  7, &data, NULL); acc->unban_time = atol(data);
 	SQL->GetData(sql_handle,  8, &data, NULL); acc->expiration_time = atol(data);
-	SQL->GetData(sql_handle,  9, &data, NULL); acc->logincount = strtoul(data, NULL, 10);
+	SQL->GetData(sql_handle,  9, &data, NULL); acc->logincount = (unsigned int)strtoul(data, NULL, 10);
 	SQL->GetData(sql_handle, 10, &data, NULL); safestrncpy(acc->lastlogin, data, sizeof(acc->lastlogin));
 	SQL->GetData(sql_handle, 11, &data, NULL); safestrncpy(acc->last_ip, data, sizeof(acc->last_ip));
 	SQL->GetData(sql_handle, 12, &data, NULL); safestrncpy(acc->birthdate, data, sizeof(acc->birthdate));
 	SQL->GetData(sql_handle, 13, &data, NULL); acc->char_slots = (uint8)atoi(data);
 	SQL->GetData(sql_handle, 14, &data, NULL); safestrncpy(acc->pincode, data, sizeof(acc->pincode));
-	SQL->GetData(sql_handle, 15, &data, NULL); acc->pincode_change = atol(data);
+	SQL->GetData(sql_handle, 15, &data, NULL); acc->pincode_change = (unsigned int)atol(data);
 	
 	SQL->FreeResult(sql_handle);
 
@@ -568,7 +568,6 @@ static bool mmo_auth_fromsql(AccountDB_SQL* db, struct mmo_account* acc, int acc
 
 	while( SQL_SUCCESS == SQL->NextRow(sql_handle) )
 	{
-		char* data;
 		SQL->GetData(sql_handle, 0, &data, NULL); safestrncpy(acc->account_reg2[i].str, data, sizeof(acc->account_reg2[i].str));
 		SQL->GetData(sql_handle, 1, &data, NULL); safestrncpy(acc->account_reg2[i].value, data, sizeof(acc->account_reg2[i].value));
 		++i;
diff --git a/src/login/login.c b/src/login/login.c
index 75247845d..feed7239b 100644
--- a/src/login/login.c
+++ b/src/login/login.c
@@ -140,8 +140,8 @@ static int waiting_disconnect_timer(int tid, int64 tick, int id, intptr_t data)
 static int online_db_setoffline(DBKey key, DBData *data, va_list ap)
 {
 	struct online_login_data* p = DB->data2ptr(data);
-	int server = va_arg(ap, int);
-	if( server == -1 )
+	int server_id = va_arg(ap, int);
+	if( server_id == -1 )
 	{
 		p->char_server = -1;
 		if( p->waiting_disconnect != INVALID_TIMER )
@@ -150,7 +150,7 @@ static int online_db_setoffline(DBKey key, DBData *data, va_list ap)
 			p->waiting_disconnect = INVALID_TIMER;
 		}
 	}
-	else if( p->char_server == server )
+	else if( p->char_server == server_id )
 		p->char_server = -2; //Char server disconnected.
 	return 0;
 }
@@ -948,7 +948,7 @@ int mmo_auth_new(const char* userid, const char* pass, const char sex, const cha
 //-----------------------------------------------------
 int mmo_auth(struct login_session_data* sd, bool isServer) {
 	struct mmo_account acc;
-	int len;
+	size_t len;
 
 	char ip[16];
 	ip2str(session[sd->fd]->client_addr, ip);
@@ -1615,7 +1615,7 @@ int login_config_read(const char* cfgName)
 		else if(!strcmpi(w1, "check_client_version"))
 			login_config.check_client_version = (bool)config_switch(w2);
 		else if(!strcmpi(w1, "client_version_to_connect"))
-			login_config.client_version_to_connect = strtoul(w2, NULL, 10);
+			login_config.client_version_to_connect = (unsigned int)strtoul(w2, NULL, 10);
 		else if(!strcmpi(w1, "use_MD5_passwords"))
 			login_config.use_md5_passwds = (bool)config_switch(w2);
 		else if(!strcmpi(w1, "group_id_to_connect"))
diff --git a/src/login/login.h b/src/login/login.h
index 15edb14dc..494912698 100644
--- a/src/login/login.h
+++ b/src/login/login.h
@@ -23,8 +23,8 @@ enum E_LOGINSERVER_ST
 
 struct login_session_data {
 	int account_id;
-	long login_id1;
-	long login_id2;
+	int login_id1;
+	int login_id2;
 	char sex;// 'F','M','S'
 
 	char userid[NAME_LENGTH];
diff --git a/src/map/atcommand.c b/src/map/atcommand.c
index 9d01b2b37..51c447ed9 100644
--- a/src/map/atcommand.c
+++ b/src/map/atcommand.c
@@ -993,7 +993,7 @@ ACMD(alive)
  *------------------------------------------*/
 ACMD(kami)
 {
-	unsigned long color=0;
+	unsigned int color=0;
 	
 	memset(atcmd_output, '\0', sizeof(atcmd_output));
 	
@@ -1009,7 +1009,7 @@ ACMD(kami)
 		else
 			intif->broadcast(atcmd_output, strlen(atcmd_output) + 1, (*(info->command + 4) == 'b' || *(info->command + 4) == 'B') ? BC_BLUE : BC_YELLOW);
 	} else {
-		if(!message || !*message || (sscanf(message, "%lx %199[^\n]", &color, atcmd_output) < 2)) {
+		if(!message || !*message || (sscanf(message, "%u %199[^\n]", &color, atcmd_output) < 2)) {
 			clif->message(fd, msg_txt(981)); // Please enter color and message (usage: @kamic <color> <message>).
 			return false;
 		}
@@ -4278,9 +4278,9 @@ char* txt_time(unsigned int duration)
 	else
 		tlen += sprintf(tlen + temp1, msg_txt(224), minutes); // %d minutes
 	if (seconds == 1)
-		tlen += sprintf(tlen + temp1, msg_txt(225), seconds); // and %d second
+		sprintf(tlen + temp1, msg_txt(225), seconds); // and %d second
 	else if (seconds > 1)
-		tlen += sprintf(tlen + temp1, msg_txt(226), seconds); // and %d seconds
+		sprintf(tlen + temp1, msg_txt(226), seconds); // and %d seconds
 		
 	return temp1;
 }
@@ -5200,7 +5200,8 @@ ACMD(clearcart)
 #define MAX_SKILLID_PARTIAL_RESULTS 5
 #define MAX_SKILLID_PARTIAL_RESULTS_LEN 74 /* "skill " (6) + "%d:" (up to 5) + "%s" (up to 30) + " (%s)" (up to 33) */
 ACMD(skillid) {
-	int skillen, idx, i, found = 0;
+	int idx, i, found = 0;
+	size_t skillen;
 	DBIterator* iter;
 	DBKey key;
 	DBData *data;
@@ -6061,7 +6062,7 @@ ACMD(npctalk)
 	char name[NAME_LENGTH],mes[100],temp[100];
 	struct npc_data *nd;
 	bool ifcolor=(*(info->command + 7) != 'c' && *(info->command + 7) != 'C')?0:1;
-	unsigned long color=0;
+	unsigned int color = 0;
 	
 	if (sd->sc.count && //no "chatting" while muted.
 		(sd->sc.data[SC_BERSERK] || sd->sc.data[SC_DEEP_SLEEP] ||
@@ -6075,7 +6076,7 @@ ACMD(npctalk)
 		}
 	}
 	else {
-		if (!message || !*message || sscanf(message, "%lx %23[^,], %99[^\n]", &color, name, mes) < 3) {
+		if (!message || !*message || sscanf(message, "%u %23[^,], %99[^\n]", &color, name, mes) < 3) {
 			clif->message(fd, msg_txt(1223)); // Please enter the correct parameters (usage: @npctalkc <color> <npc name>, <message>).
 			return false;
 		}
@@ -8286,7 +8287,7 @@ void atcommand_commands_sub(struct map_session_data* sd, const int fd, AtCommand
 	clif->message(fd, msg_txt(273)); // "Commands available:"
 	
 	for (cmd = dbi_first(iter); dbi_exists(iter); cmd = dbi_next(iter)) {
-		unsigned int slen = 0;
+		size_t slen;
 		
 		switch( type ) {
 			case COMMAND_CHARCOMMAND:
@@ -8384,8 +8385,9 @@ ACMD(accinfo) {
 ACMD(set) {
 	char reg[32], val[128];
 	struct script_data* data;
-	int toset = 0, len;
+	int toset = 0;
 	bool is_str = false;
+	size_t len;
 	
 	if( !message || !*message || (toset = sscanf(message, "%31s %128[^\n]s", reg, val)) < 1  ) {
 		clif->message(fd, msg_txt(1367)); // Usage: @set <variable name> <value>
@@ -8746,16 +8748,16 @@ static inline void atcmd_channel_help(int fd, const char *command, bool can_crea
 /* [Ind/Hercules] */
 ACMD(channel) {
 	struct hChSysCh *channel;
-	char key[HCHSYS_NAME_LENGTH], sub1[HCHSYS_NAME_LENGTH], sub2[HCHSYS_NAME_LENGTH], sub3[HCHSYS_NAME_LENGTH];
+	char subcmd[HCHSYS_NAME_LENGTH], sub1[HCHSYS_NAME_LENGTH], sub2[HCHSYS_NAME_LENGTH], sub3[HCHSYS_NAME_LENGTH];
 	unsigned char k = 0;
 	sub1[0] = sub2[0] = sub3[0] = '\0';
 	
-	if( !message || !*message || sscanf(message, "%s %s %s %s", key, sub1, sub2, sub3) < 1 ) {
+	if( !message || !*message || sscanf(message, "%s %s %s %s", subcmd, sub1, sub2, sub3) < 1 ) {
 		atcmd_channel_help(fd,command,( hChSys.allow_user_channel_creation || pc->has_permission(sd, PC_PERM_HCHSYS_ADMIN) ));
 		return true;
 	}
 	
-	if( strcmpi(key,"create") == 0 && ( hChSys.allow_user_channel_creation || pc->has_permission(sd, PC_PERM_HCHSYS_ADMIN) ) ) {
+	if( strcmpi(subcmd,"create") == 0 && ( hChSys.allow_user_channel_creation || pc->has_permission(sd, PC_PERM_HCHSYS_ADMIN) ) ) {
 		if( sub1[0] != '#' ) {
 			clif->message(fd, msg_txt(1405));// Channel name must start with a '#'
 			return false;
@@ -8787,7 +8789,7 @@ ACMD(channel) {
 		
 		clif->chsys_join(channel,sd);
 		
-	} else if ( strcmpi(key,"list") == 0 ) {
+	} else if ( strcmpi(subcmd,"list") == 0 ) {
 		if( sub1[0] != '\0' && strcmpi(sub1,"colors") == 0 ) {
 			char mout[40];
 			for( k = 0; k < hChSys.colors_count; k++ ) {
@@ -8824,7 +8826,7 @@ ACMD(channel) {
 			}
 			dbi_destroy(iter);
 		}
-	} else if ( strcmpi(key,"setcolor") == 0 ) {
+	} else if ( strcmpi(subcmd,"setcolor") == 0 ) {
 		
 		if( sub1[0] != '#' ) {
 			clif->message(fd, msg_txt(1405));// Channel name must start with a '#'
@@ -8855,7 +8857,7 @@ ACMD(channel) {
 		channel->color = k;
 		sprintf(atcmd_output, msg_txt(1413),sub1,hChSys.colors_name[k]);// '%s' channel color updated to '%s'
 		clif->message(fd, atcmd_output);
-	} else if ( strcmpi(key,"leave") == 0 ) {
+	} else if ( strcmpi(subcmd,"leave") == 0 ) {
 		
 		if( sub1[0] != '#' ) {
 			clif->message(fd, msg_txt(1405));// Channel name must start with a '#'
@@ -8883,7 +8885,7 @@ ACMD(channel) {
 			clif->chsys_left(sd->channels[k],sd);
 		sprintf(atcmd_output, msg_txt(1426),sub1); // You've left the '%s' channel
 		clif->message(fd, atcmd_output);
-	} else if ( strcmpi(key,"bindto") == 0 ) {
+	} else if ( strcmpi(subcmd,"bindto") == 0 ) {
 		
 		if( sub1[0] != '#' ) {
 			clif->message(fd, msg_txt(1405));// Channel name must start with a '#'
@@ -8903,7 +8905,7 @@ ACMD(channel) {
 		sd->gcbind = sd->channels[k];
 		sprintf(atcmd_output, msg_txt(1431),sub1); // Your global chat is now binded to the '%s' channel
 		clif->message(fd, atcmd_output);
-	} else if ( strcmpi(key,"unbind") == 0 ) {
+	} else if ( strcmpi(subcmd,"unbind") == 0 ) {
 		
 		if( sd->gcbind == NULL ) {
 			clif->message(fd, msg_txt(1432));// Your global chat is not binded to any channel
@@ -8914,7 +8916,7 @@ ACMD(channel) {
 		clif->message(fd, atcmd_output);
 		
 		sd->gcbind = NULL;
-	} else if ( strcmpi(key,"ban") == 0 ) {
+	} else if ( strcmpi(subcmd,"ban") == 0 ) {
 		struct map_session_data *pl_sd = NULL;
 		struct hChSysBanEntry *entry = NULL;
 		
@@ -8935,7 +8937,7 @@ ACMD(channel) {
 			return false;
 		}
 		
-		if (!message || !*message || sscanf(message, "%s %s %24[^\n]", key, sub1, sub2) < 1) {
+		if (!message || !*message || sscanf(message, "%s %s %24[^\n]", subcmd, sub1, sub2) < 1) {
 			sprintf(atcmd_output, msg_txt(1434), sub2);// Player '%s' was not found
 			clif->message(fd, atcmd_output);
 			return false;
@@ -8971,7 +8973,7 @@ ACMD(channel) {
 		
 		sprintf(atcmd_output, msg_txt(1437),pl_sd->status.name,sub1); // Player '%s' has now been banned from '%s' channel
 		clif->message(fd, atcmd_output);
-	} else if ( strcmpi(key,"unban") == 0 ) {
+	} else if ( strcmpi(subcmd,"unban") == 0 ) {
 		struct map_session_data *pl_sd = NULL;
 		
 		if( sub1[0] != '#' ) {
@@ -9018,7 +9020,7 @@ ACMD(channel) {
 		
 		sprintf(atcmd_output, msg_txt(1441),pl_sd->status.name,sub1); // Player '%s' has now been unbanned from the '%s' channel
 		clif->message(fd, atcmd_output);
-	} else if ( strcmpi(key,"unbanall") == 0 ) {
+	} else if ( strcmpi(subcmd,"unbanall") == 0 ) {
 		if( sub1[0] != '#' ) {
 			clif->message(fd, msg_txt(1405));// Channel name must start with a '#'
 			return false;
@@ -9047,7 +9049,7 @@ ACMD(channel) {
 		
 		sprintf(atcmd_output, msg_txt(1442),sub1); // Removed all bans from '%s' channel
 		clif->message(fd, atcmd_output);
-	} else if ( strcmpi(key,"banlist") == 0 ) {
+	} else if ( strcmpi(subcmd,"banlist") == 0 ) {
 		DBIterator *iter = NULL;
 		DBKey key;
 		DBData *data;
@@ -9092,7 +9094,7 @@ ACMD(channel) {
 		
 		dbi_destroy(iter);
 		
-	} else if ( strcmpi(key,"setopt") == 0 ) {
+	} else if ( strcmpi(subcmd,"setopt") == 0 ) {
 		const char* opt_str[3] = {
 			"None",
 			"JoinAnnounce",
@@ -9817,7 +9819,7 @@ bool is_atcommand(const int fd, struct map_session_data* sd, const char* message
 			return true;
 		} while(0);
 	}
-	else if (*message == atcommand->at_symbol) {
+	else /*if (*message == atcommand->at_symbol)*/ {
 		//atcmd_msg is constructed above differently for charcommands
 		//it's copied from message if not a charcommand so it can
 		//pass through the rest of the code compatible with both symbols
@@ -10037,7 +10039,7 @@ void atcommand_config_read(const char* config_filename) {
 			else {
 				if( commandinfo->help == NULL ) {
 					const char *str = config_setting_get_string(command);
-					int len = strlen(str);
+					size_t len = strlen(str);
 					commandinfo->help = aMalloc( len * sizeof(char) );
 					safestrncpy(commandinfo->help, str, len);
 				}
diff --git a/src/map/battle.c b/src/map/battle.c
index b3e7e6dc2..802d2ec02 100644
--- a/src/map/battle.c
+++ b/src/map/battle.c
@@ -335,11 +335,11 @@ int64 battle_attr_fix(struct block_list *src, struct block_list *target, int64 d
 		if( atk_elem == ELE_FIRE && battle->get_current_skill(target) == GN_WALLOFTHORN ) {
 			struct skill_unit *su = (struct skill_unit*)target;
 			struct skill_unit_group *sg;
-			struct block_list *src;
+			struct block_list *sgsrc;
 
 			if( !su || !su->alive
 			 || (sg = su->group) == NULL || sg->val3 == -1
-			 || (src = map->id2bl(sg->src_id)) == NULL || status->isdead(src)
+			 || (sgsrc = map->id2bl(sg->src_id)) == NULL || status->isdead(sgsrc)
 			)
 				return 0;
 
@@ -347,7 +347,7 @@ int64 battle_attr_fix(struct block_list *src, struct block_list *target, int64 d
 				int x,y;
 				x = sg->val3 >> 16;
 				y = sg->val3 & 0xffff;
-				skill->unitsetting(src,su->group->skill_id,su->group->skill_lv,x,y,1);
+				skill->unitsetting(sgsrc,su->group->skill_id,su->group->skill_lv,x,y,1);
 				sg->val3 = -1;
 				sg->limit = DIFF_TICK32(timer->gettick(),sg->tick)+300;
 			}
@@ -2332,11 +2332,12 @@ int battle_calc_skillratio(int attack_type, struct block_list *src, struct block
 						break;
 				case SR_RAMPAGEBLASTER:
 					skillratio += 20 * skill_lv * (sd?sd->spiritball_old:5) - 100;
-					if( sc && sc->data[SC_EXPLOSIONSPIRITS] ){
+					if( sc && sc->data[SC_EXPLOSIONSPIRITS] ) {
 						skillratio += sc->data[SC_EXPLOSIONSPIRITS]->val1 * 20;
 						RE_LVL_DMOD(120);
-					}else
+					} else {
 						RE_LVL_DMOD(150);
+					}
 					break;
 				case SR_KNUCKLEARROW:
 					if( flag&4 ){  // ATK [(Skill Level x 150) + (1000 x Target current weight / Maximum weight) + (Target Base Level x 5) x (Caster Base Level / 150)] %
@@ -2600,10 +2601,10 @@ int64 battle_calc_damage(struct block_list *src,struct block_list *bl,struct Dam
 		if( sc->data[SC_SAFETYWALL] && (flag&(BF_SHORT|BF_MAGIC))==BF_SHORT )
 		{
 			struct skill_unit_group* group = skill->id2group(sc->data[SC_SAFETYWALL]->val3);
-			uint16 skill_id = sc->data[SC_SAFETYWALL]->val2;
+			uint16 src_skill_id = sc->data[SC_SAFETYWALL]->val2;
 			if (group) {
 				d->dmg_lv = ATK_BLOCK;
-				if(skill_id == MH_STEINWAND){
+				if(src_skill_id == MH_STEINWAND){
 				    if (--group->val2<=0)
 					    skill->del_unitgroup(group,ALC_MARK);
 				    return 0;
@@ -3209,11 +3210,9 @@ struct Damage battle_calc_magic_attack(struct block_list *src,struct block_list
 	memset(&ad,0,sizeof(ad));
 	memset(&flag,0,sizeof(flag));
 
-	if(src==NULL || target==NULL)
-	{
-		nullpo_info(NLP_MARK);
-		return ad;
-	}
+	nullpo_retr(ad, src);
+	nullpo_retr(ad, target);
+
 	//Initial Values
 	ad.damage = 1;
 	ad.div_=skill->get_num(skill_id,skill_lv);
@@ -3521,10 +3520,8 @@ struct Damage battle_calc_misc_attack(struct block_list *src,struct block_list *
 	
 	memset(&md,0,sizeof(md));
 
-	if( src == NULL || target == NULL ){
-		nullpo_info(NLP_MARK);
-		return md;
-	}
+	nullpo_retr(md, src);
+	nullpo_retr(md, target);
 
 	//Some initial values
 	md.amotion=skill->get_inf(skill_id)&INF_GROUND_SKILL?0:sstatus->amotion;
@@ -3642,12 +3639,12 @@ struct Damage battle_calc_misc_attack(struct block_list *src,struct block_list *
 					md.damage = 7 * md.damage / 20;
 				}*/
 			}else{
-				float vitfactor = 0.0f, temp;
+				float vitfactor = 0.0f, ftemp;
 				
 				if( (vitfactor=(status_get_vit(target)-120.0f)) > 0)
 					vitfactor = (vitfactor * (matk + atk) / 10) / status_get_vit(target);
-				temp = max(0, vitfactor) + (targetVit * (matk + atk)) / 10;
-				md.damage = (int64)(temp * 70 * skill_lv / 100);
+				ftemp = max(0, vitfactor) + (targetVit * (matk + atk)) / 10;
+				md.damage = (int64)(ftemp * 70 * skill_lv / 100);
 			}
 			md.damage -= totaldef;
 		}
@@ -3947,11 +3944,9 @@ struct Damage battle_calc_weapon_attack(struct block_list *src,struct block_list
 	memset(&wd,0,sizeof(wd));
 	memset(&flag,0,sizeof(flag));
 
-	if(src==NULL || target==NULL)
-	{
-		nullpo_info(NLP_MARK);
-		return wd;
-	}
+	nullpo_retr(wd, src);
+	nullpo_retr(wd, target);
+
 	//Initial flag
 	flag.rh=1;
 	flag.weapon=1;
@@ -4559,7 +4554,7 @@ struct Damage battle_calc_weapon_attack(struct block_list *src,struct block_list
 					short index = sd?sd->equip_index[EQI_HAND_R]:0;
 					GET_NORMAL_ATTACK( (sc && sc->data[SC_MAXIMIZEPOWER]?1:0)|(sc && sc->data[SC_WEAPONPERFECT]?8:0) );
 					wd.damage = wd.damage * 70 / 100;
-					n_ele = true;
+					//n_ele = true; // FIXME: This is has no effect if it's after GET_NORMAL_ATTACK (was this intended, or was it supposed to be put above?)
 					
 					if (sd && index >= 0 &&
 						sd->inventory_data[index] &&
@@ -5267,6 +5262,11 @@ void battle_reflect_damage(struct block_list *target, struct block_list *src, st
 			delay += 100;/* gradual increase so the numbers don't clip in the client */
 		}
 	}
+
+#ifdef __clang_analyzer__
+	// Tell Clang's static analyzer that we want to += it even the value is currently unused (it'd be used if we added new checks)
+	(void)delay;
+#endif // __clang_analyzer
 	
 	/* something caused reflect */
 	if( trdamage ) {
diff --git a/src/map/clif.c b/src/map/clif.c
index a04ac0e27..e51c59461 100644
--- a/src/map/clif.c
+++ b/src/map/clif.c
@@ -578,12 +578,12 @@ int clif_send(const void* buf, int len, struct block_list* bl, enum send_target
 				struct hQueue *queue = &script->hq[sd->bg_queue.arena->queue_id];
 				
 				for( i = 0; i < queue->size; i++ ) {
-					struct map_session_data * sd = NULL;
+					struct map_session_data *qsd = NULL;
 					
-					if( queue->item[i] > 0 && ( sd = map->id2sd(queue->item[i]) ) ) {
-						WFIFOHEAD(sd->fd,len);
-						memcpy(WFIFOP(sd->fd,0), buf, len);
-						WFIFOSET(sd->fd,len);
+					if( queue->item[i] > 0 && ( qsd = map->id2sd(queue->item[i]) ) ) {
+						WFIFOHEAD(qsd->fd,len);
+						memcpy(WFIFOP(qsd->fd,0), buf, len);
+						WFIFOSET(qsd->fd,len);
 					}
 				}
 			}
@@ -930,6 +930,8 @@ void clif_set_unit_idle(struct block_list* bl, struct map_session_data *tsd, enu
 	struct view_data* vd = status->get_viewdata(bl);
 	struct packet_idle_unit p;
 	int g_id = status->get_guild_id(bl);
+
+	nullpo_retv(bl);
 	
 #if PACKETVER < 20091103
 	if( !pcdb_checkid(vd->class_) ) {
@@ -1060,6 +1062,8 @@ void clif_spawn_unit(struct block_list* bl, enum send_target target) {
 	struct packet_spawn_unit p;
 	int g_id = status->get_guild_id(bl);
 
+	nullpo_retv(bl);
+
 #if PACKETVER < 20091103
 	if( !pcdb_checkid(vd->class_) ) {
 		clif->spawn_unit2(bl,target);
@@ -1123,6 +1127,7 @@ void clif_spawn_unit(struct block_list* bl, enum send_target target) {
 	}
 #endif
 	if( disguised(bl) ) {
+		nullpo_retv(sd);
 		if( sd->status.class_ != sd->disguise )
 			clif->send(&p,sizeof(p),bl,target);
 #if PACKETVER >= 20091103
@@ -1146,6 +1151,8 @@ void clif_set_unit_walking(struct block_list* bl, struct map_session_data *tsd,
 	struct view_data* vd = status->get_viewdata(bl);
 	struct packet_unit_walking p;
 	int g_id = status->get_guild_id(bl);
+
+	nullpo_retv(bl);
 	
 	sd = BL_CAST(BL_PC, bl);
 	
@@ -1831,7 +1838,7 @@ void clif_selllist(struct map_session_data *sd)
 /// - append this text
 void clif_scriptmes(struct map_session_data *sd, int npcid, const char *mes) {
 	int fd = sd->fd;
-	int slen = strlen(mes) + 9;
+	size_t slen = strlen(mes) + 9;
 
 	sd->state.dialog = 1;
 	
@@ -1943,7 +1950,7 @@ void clif_sendfakenpc(struct map_session_data *sd, int npcid) {
 /// TODO investigate behavior of other windows [FlavioJS]
 void clif_scriptmenu(struct map_session_data* sd, int npcid, const char* mes) {
 	int fd = sd->fd;
-	int slen = strlen(mes) + 9;
+	size_t slen = strlen(mes) + 9;
 	struct block_list *bl = NULL;
 
 	if (!sd->state.using_fake_npc && (npcid == npc->fake_nd->bl.id || ((bl = map->id2bl(npcid)) && (bl->m!=sd->bl.m ||
@@ -2714,7 +2721,7 @@ void read_channels_config(void) {
 
 		if( (colors = config_setting_get_member(settings, "colors")) != NULL ) {
 			int color_count = config_setting_length(colors);
-			CREATE( hChSys.colors, unsigned long, color_count );
+			CREATE( hChSys.colors, unsigned int, color_count );
 			CREATE( hChSys.colors_name, char *, color_count );
 			for(i = 0; i < color_count; i++) {
 				config_setting_t *color = config_setting_get_elem(colors, i);
@@ -2723,7 +2730,7 @@ void read_channels_config(void) {
 				
 				safestrncpy(hChSys.colors_name[i], config_setting_name(color), HCHSYS_NAME_LENGTH);
 
-				hChSys.colors[i] = strtoul(config_setting_get_string_elem(colors,i),NULL,0);
+				hChSys.colors[i] = (unsigned int)strtoul(config_setting_get_string_elem(colors,i),NULL,0);
 				hChSys.colors[i] = (hChSys.colors[i] & 0x0000FF) << 16 | (hChSys.colors[i] & 0x00FF00) | (hChSys.colors[i] & 0xFF0000) >> 16;//RGB to BGR
 			}
 			hChSys.colors_count = color_count;
@@ -3141,7 +3148,7 @@ void clif_changelook(struct block_list *bl,int type,int val)
 	sd = BL_CAST(BL_PC, bl);
 	sc = status->get_sc(bl);
 	vd = status->get_viewdata(bl);
-	//nullpo_ret(vd);
+
 	if( vd ) //temp hack to let Warp Portal change appearance
 		switch(type) {
 			case LOOK_WEAPON:
@@ -3250,6 +3257,7 @@ void clif_changelook(struct block_list *bl,int type,int val)
 	WBUFW(buf,0)=0x1d7;
 	WBUFL(buf,2)=bl->id;
 	if(type == LOOK_WEAPON || type == LOOK_SHIELD) {
+		nullpo_retv(vd);
 		WBUFB(buf,6)=LOOK_WEAPON;
 		WBUFW(buf,7)=vd->weapon;
 		WBUFW(buf,9)=vd->shield;
@@ -3258,7 +3266,7 @@ void clif_changelook(struct block_list *bl,int type,int val)
 		WBUFL(buf,7)=val;
 	}
 	clif->send(buf,packet_len(0x1d7),bl,target);
-	if( disguised(bl) && ((TBL_PC*)sd)->fontcolor ) {
+	if( disguised(bl) && sd && sd->fontcolor ) {
 		WBUFL(buf,2)=-bl->id;
 		clif->send(buf,packet_len(0x1d7),bl,SELF);
 	}
@@ -4696,6 +4704,7 @@ int clif_outsight(struct block_list *bl,va_list ap)
 	tsd = BL_CAST(BL_PC, tbl);
 
 	if (tsd && tsd->fd) { //tsd has lost sight of the bl object.
+		nullpo_ret(bl);
 		switch(bl->type){
 			case BL_PC:
 				if (sd->vd.class_ != INVISIBLE_CLASS)
@@ -4728,6 +4737,7 @@ int clif_outsight(struct block_list *bl,va_list ap)
 			}
 	}
 	if (sd && sd->fd) { //sd is watching tbl go out of view.
+		nullpo_ret(tbl);
 		if (((vd=status->get_viewdata(tbl)) && vd->class_ != INVISIBLE_CLASS) &&
 			!(tbl->type == BL_NPC && (((TBL_NPC*)tbl)->option&OPTION_INVISIBLE)))
 			clif->clearunit_single(tbl->id,CLR_OUTSIGHT,sd->fd);
@@ -4750,6 +4760,7 @@ int clif_insight(struct block_list *bl,va_list ap)
 	tsd = BL_CAST(BL_PC, tbl);
 
 	if (tsd && tsd->fd) { //Tell tsd that bl entered into his view
+		nullpo_ret(bl);
 		switch(bl->type) {
 			case BL_ITEM:
 				clif->getareachar_item(tsd,(struct flooritem_data*)bl);
@@ -5528,7 +5539,7 @@ void clif_displaymessage(const int fd, const char* mes) {
 	if( fd == -2 ) {
 		ShowInfo("HCP: %s\n",mes);
 	} else if ( fd > 0 ) {
-		int len;
+		size_t len;
 		
 		if ( ( len = strnlen(mes, 255) ) > 0 ) { // don't send a void message (it's not displaying on the client chat). @help can send void line.
 			WFIFOHEAD(fd, 5 + len);
@@ -5554,7 +5565,7 @@ void clif_displaymessage2(const int fd, const char* mes) {
 		line = strtok(message, "\n");
 		while(line != NULL) {
 			// Limit message to 255+1 characters (otherwise it causes a buffer overflow in the client)
-			int len = strnlen(line, 255);
+			size_t len = strnlen(line, 255);
 			
 			if (len > 0) { // don't send a void message (it's not displaying on the client chat). @help can send void line.
 				if( fd == -2 ) {
@@ -5606,7 +5617,7 @@ void clif_displaymessage_sprintf(const int fd, const char* mes, ...) {
 }
 /// Send broadcast message in yellow or blue without font formatting (ZC_BROADCAST).
 /// 009a <packet len>.W <message>.?B
-void clif_broadcast(struct block_list* bl, const char* mes, int len, int type, enum send_target target)
+void clif_broadcast(struct block_list* bl, const char* mes, size_t len, int type, enum send_target target)
 {
 	int lp = (type&BC_COLOR_MASK) ? 4 : 0;
 	unsigned char *buf = (unsigned char*)aMalloc((4 + lp + len)*sizeof(unsigned char));
@@ -5630,7 +5641,7 @@ void clif_broadcast(struct block_list* bl, const char* mes, int len, int type, e
  *------------------------------------------*/
 void clif_GlobalMessage(struct block_list* bl, const char* message) {
 	char buf[256];
-	int len;
+	size_t len;
 	nullpo_retv(bl);
 
 	if(!message)
@@ -5653,7 +5664,7 @@ void clif_GlobalMessage(struct block_list* bl, const char* message) {
 
 /// Send broadcast message with font formatting (ZC_BROADCAST2).
 /// 01c3 <packet len>.W <fontColor>.L <fontType>.W <fontSize>.W <fontAlign>.W <fontY>.W <message>.?B
-void clif_broadcast2(struct block_list* bl, const char* mes, int len, unsigned long fontColor, short fontType, short fontSize, short fontAlign, short fontY, enum send_target target)
+void clif_broadcast2(struct block_list* bl, const char* mes, size_t len, unsigned int fontColor, short fontType, short fontSize, short fontAlign, short fontY, enum send_target target)
 {
 	unsigned char *buf = (unsigned char*)aMalloc((16 + len)*sizeof(unsigned char));
 
@@ -5829,7 +5840,7 @@ void clif_upgrademessage(int fd, int result, int item_id)
 /// Whisper is transmitted to the destination player (ZC_WHISPER).
 /// 0097 <packet len>.W <nick>.24B <message>.?B
 /// 0097 <packet len>.W <nick>.24B <isAdmin>.L <message>.?B (PACKETVER >= 20091104)
-void clif_wis_message(int fd, const char* nick, const char* mes, int mes_len) {
+void clif_wis_message(int fd, const char* nick, const char* mes, size_t mes_len) {
 #if PACKETVER < 20091104
 	WFIFOHEAD(fd, mes_len + NAME_LENGTH + 4);
 	WFIFOW(fd,0) = 0x97;
@@ -8053,14 +8064,14 @@ void clif_marriage_proposal(int fd, struct map_session_data *sd, struct map_sess
 /*==========================================
  *
  *------------------------------------------*/
-void clif_disp_onlyself(struct map_session_data *sd, const char *mes, int len) {
+void clif_disp_onlyself(struct map_session_data *sd, const char *mes, size_t len) {
 	clif->disp_message(&sd->bl, mes, len, SELF);
 }
 
 /*==========================================
  * Displays a message using the guild-chat colors to the specified targets. [Skotlex]
  *------------------------------------------*/
-void clif_disp_message(struct block_list* src, const char* mes, int len, enum send_target target)
+void clif_disp_message(struct block_list* src, const char* mes, size_t len, enum send_target target)
 {
 	unsigned char buf[256];
 
@@ -8317,7 +8328,7 @@ void clif_specialeffect_value(struct block_list* bl, int effect_id, int num, sen
 // Modification of clif_messagecolor to send colored messages to players to chat log only (doesn't display overhead)
 /// 02c1 <packet len>.W <id>.L <color>.L <message>.?B
 int clif_colormes(int fd, enum clif_colors color, const char* msg) {
-	unsigned short msg_len = strlen(msg) + 1;
+	size_t msg_len = strlen(msg) + 1;
 
 	WFIFOHEAD(fd,msg_len + 12);
 	WFIFOW(fd,0) = 0x2C1;
@@ -8332,8 +8343,8 @@ int clif_colormes(int fd, enum clif_colors color, const char* msg) {
 
 /// Monster/NPC color chat [SnakeDrak] (ZC_NPC_CHAT).
 /// 02c1 <packet len>.W <id>.L <color>.L <message>.?B
-void clif_messagecolor(struct block_list* bl, unsigned long color, const char* msg) {
-	unsigned short msg_len = strlen(msg) + 1;
+void clif_messagecolor(struct block_list* bl, unsigned int color, const char* msg) {
+	size_t msg_len = strlen(msg) + 1;
 	uint8 buf[256];
 	color = (color & 0x0000FF) << 16 | (color & 0x00FF00) | (color & 0xFF0000) >> 16; // RGB to BGR
 
@@ -8657,7 +8668,7 @@ void clif_slide(struct block_list *bl, int x, int y)
 void clif_disp_overhead(struct block_list *bl, const char* mes)
 {
 	unsigned char buf[256]; //This should be more than sufficient, the theorical max is CHAT_SIZE + 8 (pads and extra inserted crap)
-	int len_mes = strlen(mes)+1; //Account for \0
+	size_t len_mes = strlen(mes)+1; //Account for \0
 
 	if (len_mes > sizeof(buf)-8) {
 		ShowError("clif_disp_overhead: Message too long (length %d)\n", len_mes);
@@ -8946,9 +8957,10 @@ void clif_viewequip_fail(struct map_session_data* sd)
 /// Returns true if the packet was parsed successfully.
 /// Formats: 0 - <packet id>.w <packet len>.w (<name> : <message>).?B 00
 ///          1 - <packet id>.w <packet len>.w <name>.24B <message>.?B 00
-bool clif_process_message(struct map_session_data* sd, int format, char** name_, int* namelen_, char** message_, int* messagelen_) {
+bool clif_process_message(struct map_session_data *sd, int format, char **name_, size_t *namelen_, char **message_, size_t *messagelen_) {
 	char *text, *name, *message;
-	unsigned int packetlen, textlen, namelen, messagelen;
+	unsigned int packetlen, textlen;
+	size_t namelen, messagelen;
 	int fd = sd->fd;
 
 	*name_ = NULL;
@@ -9604,7 +9616,7 @@ void clif_parse_Hotkey(int fd, struct map_session_data *sd) {
 
 /// Displays cast-like progress bar (ZC_PROGRESS).
 /// 02f0 <color>.L <time>.L
-void clif_progressbar(struct map_session_data * sd, unsigned long color, unsigned int second)
+void clif_progressbar(struct map_session_data * sd, unsigned int color, unsigned int second)
 {
 	int fd = sd->fd;
 
@@ -9766,10 +9778,10 @@ int clif_undisguise_timer(int tid, int64 tick, int id, intptr_t data) {
 void clif_parse_GlobalMessage(int fd, struct map_session_data* sd)
 {
 	const char* text = (char*)RFIFOP(fd,4);
-	int textlen = RFIFOW(fd,2) - 4;
+	size_t textlen = RFIFOW(fd,2) - 4;
 
 	char *name, *message, *fakename = NULL;
-	int namelen, messagelen;
+	size_t namelen, messagelen;
 
 	bool is_fake;
 
@@ -10274,7 +10286,7 @@ void clif_parse_WisMessage(int fd, struct map_session_data* sd)
 	int i;
 
 	char *target, *message;
-	int namelen, messagelen;
+	size_t namelen, messagelen;
 
 	// validate packet and retrieve name and message
 	if( !clif->process_message(sd, 1, &target, &namelen, &message, &messagelen) )
@@ -10354,7 +10366,7 @@ void clif_parse_WisMessage(int fd, struct map_session_data* sd)
 			channel = (struct hChSysCh *)g->channel;
 		}
 		if( channel || (channel = strdb_get(clif->channel_db,chname)) ) {
-			unsigned char k;
+			int k;
 			for( k = 0; k < sd->channel_count; k++ ) {
 				if( sd->channels[k] == channel )
 					break;
@@ -10364,7 +10376,6 @@ void clif_parse_WisMessage(int fd, struct map_session_data* sd)
 			} else if( channel->pass[0] == '\0' && !(channel->banned && idb_exists(channel->banned, sd->status.account_id)) ) {
 				if( channel->type == hChSys_ALLY ) {
 					struct guild *g = sd->guild, *sg = NULL;
-					int k;
 					for (k = 0; k < MAX_GUILDALLIANCE; k++) {
 						if( g->alliance[k].opposition == 0 && g->alliance[k].guild_id && (sg = guild->search(g->alliance[k].guild_id) ) ) {
 							if( !(((struct hChSysCh*)sg->channel)->banned && idb_exists(((struct hChSysCh*)sg->channel)->banned, sd->status.account_id)))
@@ -12097,7 +12108,7 @@ void clif_parse_PartyMessage(int fd, struct map_session_data* sd)
 	int textlen = RFIFOW(fd,2) - 4;
 
 	char *name, *message;
-	int namelen, messagelen;
+	size_t namelen, messagelen;
 
 	// validate packet and retrieve name and message
 	if( !clif->process_message(sd, 0, &name, &namelen, &message, &messagelen) )
@@ -12629,7 +12640,7 @@ void clif_PartyBookingFailedRecall(int fd, struct map_session_data *sd)
 void clif_parse_PartyBookingRefuseVolunteer(int fd, struct map_session_data *sd)
 {
 #ifdef PARTY_RECRUIT
-	unsigned long aid = RFIFOL(fd, 2);
+	unsigned int aid = RFIFOL(fd, 2);
 
 	clif->PartyBookingRefuseVolunteer(aid, sd);
 #else
@@ -12638,7 +12649,7 @@ void clif_parse_PartyBookingRefuseVolunteer(int fd, struct map_session_data *sd)
 }
 
 /// 08fa <index>.L
-void clif_PartyBookingRefuseVolunteer(unsigned long aid, struct map_session_data *sd)
+void clif_PartyBookingRefuseVolunteer(unsigned int aid, struct map_session_data *sd)
 {
 #ifdef PARTY_RECRUIT
 	unsigned char buf[2+6];
@@ -13035,7 +13046,7 @@ bool clif_validate_emblem(const uint8 *emblem, unsigned long emblem_len) {
 /// 0153 <packet len>.W <emblem data>.?B
 void clif_parse_GuildChangeEmblem(int fd,struct map_session_data *sd)
 {
-	unsigned long emblem_len = RFIFOW(fd,2)-4;
+	unsigned int emblem_len = RFIFOW(fd,2)-4;
 	const uint8* emblem = RFIFOP(fd,4);
 
 	if( !emblem_len || !sd->state.gmaster_flag )
@@ -13157,7 +13168,7 @@ void clif_parse_GuildMessage(int fd, struct map_session_data* sd)
 	int textlen = RFIFOW(fd,2) - 4;
 
 	char *name, *message;
-	int namelen, messagelen;
+	size_t namelen, messagelen;
 
 	// validate packet and retrieve name and message
 	if( !clif->process_message(sd, 0, &name, &namelen, &message, &messagelen) )
@@ -14761,7 +14772,7 @@ void clif_Mail_read(struct map_session_data *sd, int mail_id)
 		struct mail_message *msg = &sd->mail.inbox.msg[i];
 		struct item *item = &msg->item;
 		struct item_data *data;
-		int msg_len = strlen(msg->body), len;
+		size_t msg_len = strlen(msg->body), len;
 
 		if( msg_len == 0 ) {
 			strcpy(msg->body, "(no message)");
@@ -16087,7 +16098,7 @@ void clif_bg_xy_remove(struct map_session_data *sd)
 
 /// Notifies clients of a battleground message (ZC_BATTLEFIELD_CHAT).
 /// 02dc <packet len>.W <account id>.L <name>.24B <message>.?B
-void clif_bg_message(struct battleground_data *bgd, int src_id, const char *name, const char *mes, int len)
+void clif_bg_message(struct battleground_data *bgd, int src_id, const char *name, const char *mes, size_t len)
 {
 	struct map_session_data *sd;
 	unsigned char *buf;
@@ -16116,7 +16127,7 @@ void clif_parse_BattleChat(int fd, struct map_session_data* sd)
 	int textlen = RFIFOW(fd,2) - 4;
 
 	char *name, *message;
-	int namelen, messagelen;
+	size_t namelen, messagelen;
 
 	if( !clif->process_message(sd, 0, &name, &namelen, &message, &messagelen) )
 		return;
@@ -16994,7 +17005,7 @@ void clif_parse_debug(int fd,struct map_session_data *sd) {
 		}
 		ShowDebug("Packet debug of 0x%04X (length %d), %s session #%d, %d/%d (AID/CID)\n", cmd, packet_len, sd->state.active ? "authed" : "unauthed", fd, sd->status.account_id, sd->status.char_id);
 	} else {
-		packet_len = RFIFOREST(fd);
+		packet_len = (int)RFIFOREST(fd);
 		ShowDebug("Packet debug of 0x%04X (length %d), session #%d\n", cmd, packet_len, fd);
 	}
 
@@ -17602,7 +17613,7 @@ void clif_partytickack(struct map_session_data* sd, bool flag) {
 
 void clif_ShowScript(struct block_list* bl, const char* message) {
 	char buf[256];
-	int len;
+	size_t len;
 	nullpo_retv(bl);
 
 	if(!message)
@@ -18297,7 +18308,7 @@ int do_init_clif(bool minimal) {
 	 * Setup Color Table (saves unnecessary load of strtoul on every call)
 	 **/
 	for(i = 0; i < COLOR_MAX; i++) {
-		color_table[i] = strtoul(colors[i],NULL,0);
+		color_table[i] = (unsigned int)strtoul(colors[i],NULL,0);
 		color_table[i] = (color_table[i] & 0x0000FF) << 16 | (color_table[i] & 0x00FF00) | (color_table[i] & 0xFF0000) >> 16;//RGB to BGR
 	}
 	
diff --git a/src/map/clif.h b/src/map/clif.h
index 6ccd951a0..c4088893a 100644
--- a/src/map/clif.h
+++ b/src/map/clif.h
@@ -472,7 +472,7 @@ struct s_packet_db {
 };
 
 struct {
-	unsigned long *colors;
+	unsigned int *colors;
 	char **colors_name;
 	unsigned char colors_count;
 	bool local, ally, irc;
@@ -517,7 +517,7 @@ struct cdelayed_damage {
  * Vars
  **/
 struct s_packet_db packet_db[MAX_PACKET_DB + 1];
-unsigned long color_table[COLOR_MAX];
+unsigned int color_table[COLOR_MAX];
 
 /**
  * Clif.c Interface
@@ -706,7 +706,7 @@ struct clif_interface {
 	void (*equpcheckbox) (struct map_session_data* sd);
 	void (*displayexp) (struct map_session_data *sd, unsigned int exp, char type, bool is_quest);
 	void (*font) (struct map_session_data *sd);
-	void (*progressbar) (struct map_session_data * sd, unsigned long color, unsigned int second);
+	void (*progressbar) (struct map_session_data * sd, unsigned int color, unsigned int second);
 	void (*progressbar_abort) (struct map_session_data * sd);
 	void (*showdigit) (struct map_session_data* sd, unsigned char type, int value);
 	int (*elementalconverter_list) (struct map_session_data *sd);
@@ -783,13 +783,13 @@ struct clif_interface {
 	void (*clearchat) (struct chat_data *cd,int fd);
 	void (*leavechat) (struct chat_data* cd, struct map_session_data* sd, bool flag);
 	void (*changechatstatus) (struct chat_data* cd);
-	void (*wis_message) (int fd, const char* nick, const char* mes, int mes_len);
+	void (*wis_message) (int fd, const char* nick, const char* mes, size_t mes_len);
 	void (*wis_end) (int fd, int flag);
-	void (*disp_onlyself) (struct map_session_data *sd, const char *mes, int len);
-	void (*disp_message) (struct block_list* src, const char* mes, int len, enum send_target target);
-	void (*broadcast) (struct block_list* bl, const char* mes, int len, int type, enum send_target target);
-	void (*broadcast2) (struct block_list* bl, const char* mes, int len, unsigned long fontColor, short fontType, short fontSize, short fontAlign, short fontY, enum send_target target);
-	void (*messagecolor) (struct block_list* bl, unsigned long color, const char* msg);
+	void (*disp_onlyself) (struct map_session_data *sd, const char *mes, size_t len);
+	void (*disp_message) (struct block_list* src, const char* mes, size_t len, enum send_target target);
+	void (*broadcast) (struct block_list* bl, const char* mes, size_t len, int type, enum send_target target);
+	void (*broadcast2) (struct block_list* bl, const char* mes, size_t len, unsigned int fontColor, short fontType, short fontSize, short fontAlign, short fontY, enum send_target target);
+	void (*messagecolor) (struct block_list* bl, unsigned int color, const char* msg);
 	void (*disp_overhead) (struct block_list *bl, const char* mes);
 	void (*msg) (struct map_session_data* sd, unsigned short id);
 	void (*msg_value) (struct map_session_data* sd, unsigned short id, int value);
@@ -801,7 +801,7 @@ struct clif_interface {
 	/* message+s(printf) */
 	void (*messages) (const int fd, const char* mes, ...);
 	int (*colormes) (int fd, enum clif_colors color, const char* msg);
-	bool (*process_message) (struct map_session_data* sd, int format, char** name_, int* namelen_, char** message_, int* messagelen_);
+	bool (*process_message) (struct map_session_data *sd, int format, char **name_, size_t *namelen_, char **message_, size_t *messagelen_);
 	void (*wisexin) (struct map_session_data *sd,int type,int flag);
 	void (*wisall) (struct map_session_data *sd,int type,int flag);
 	void (*PMIgnoreList) (struct map_session_data* sd);
@@ -887,7 +887,7 @@ struct clif_interface {
 	void (*bg_hp) (struct map_session_data *sd);
 	void (*bg_xy) (struct map_session_data *sd);
 	void (*bg_xy_remove) (struct map_session_data *sd);
-	void (*bg_message) (struct battleground_data *bgd, int src_id, const char *name, const char *mes, int len);
+	void (*bg_message) (struct battleground_data *bgd, int src_id, const char *name, const char *mes, size_t len);
 	void (*bg_updatescore) (int16 m);
 	void (*bg_updatescore_single) (struct map_session_data *sd);
 	void (*sendbgemblem_area) (struct map_session_data *sd);
@@ -970,7 +970,7 @@ struct clif_interface {
 	void (*PartyRecruitInsertNotify) (struct map_session_data* sd, struct party_booking_ad_info* pb_ad);
 	/* Group Search System Update */
 	void (*PartyBookingVolunteerInfo) (int index, struct map_session_data *sd);
-	void (*PartyBookingRefuseVolunteer) (unsigned long aid, struct map_session_data *sd);
+	void (*PartyBookingRefuseVolunteer) (unsigned int aid, struct map_session_data *sd);
 	void (*PartyBookingCancelVolunteer) (int index, struct map_session_data *sd);
 	void (*PartyBookingAddFilteringList) (int index, struct map_session_data *sd);
 	void (*PartyBookingSubFilteringList) (int gid, struct map_session_data *sd);
diff --git a/src/map/guild.c b/src/map/guild.c
index 66376a2a8..8a34b7f4b 100644
--- a/src/map/guild.c
+++ b/src/map/guild.c
@@ -1594,10 +1594,10 @@ int guild_opposition(struct map_session_data *sd,struct map_session_data *tsd)
  * Notification of a relationship between 2 guilds
  *---------------------------------------------------*/
 int guild_allianceack(int guild_id1,int guild_id2,int account_id1,int account_id2,int flag,const char *name1,const char *name2) {
-	struct guild *g[2];
-	int guild_id[2];
-	const char *guild_name[2];
-	struct map_session_data *sd[2];
+	struct guild *g[2] = { NULL };
+	int guild_id[2] = { 0 };
+	const char *guild_name[2] = { NULL };
+	struct map_session_data *sd[2] = { NULL };
 	int j,i;
 
 	guild_id[0] = guild_id1;
@@ -1664,11 +1664,11 @@ int guild_allianceack(int guild_id1,int guild_id2,int account_id1,int account_id
 
 
 	for (i = 0; i < 2 - (flag & 1); i++) { // Retransmission of the relationship list to all members
-		struct map_session_data *sd;
+		struct map_session_data *msd;
 		if(g[i]!=NULL)
 			for(j=0;j<g[i]->max_member;j++)
-				if((sd=g[i]->member[j].sd)!=NULL)
-					clif->guild_allianceinfo(sd);
+				if((msd=g[i]->member[j].sd)!=NULL)
+					clif->guild_allianceinfo(msd);
 	}
 	return 0;
 }
diff --git a/src/map/homunculus.c b/src/map/homunculus.c
index 7ab471b9d..c6fa68d7f 100644
--- a/src/map/homunculus.c
+++ b/src/map/homunculus.c
@@ -1209,7 +1209,7 @@ void homunculus_exp_db_read(void) {
 			if(line[0] == '/' && line[1] == '/')
 				continue;
 
-			if (!(homun->exptable[j++] = strtoul(line, NULL, 10)))
+			if (!(homun->exptable[j++] = (unsigned int)strtoul(line, NULL, 10)))
 				break;
 		}
 		// Last permitted level have to be 0!
diff --git a/src/map/intif.c b/src/map/intif.c
index df7a16db7..75ca714c9 100644
--- a/src/map/intif.c
+++ b/src/map/intif.c
@@ -125,7 +125,7 @@ int intif_rename(struct map_session_data *sd, int type, char *name)
 }
 
 // GM Send a message
-int intif_broadcast(const char* mes, int len, int type)
+int intif_broadcast(const char* mes, size_t len, int type)
 {
 	int lp = (type|BC_COLOR_MASK) ? 4 : 0;
 
@@ -155,7 +155,7 @@ int intif_broadcast(const char* mes, int len, int type)
 	return 0;
 }
 
-int intif_broadcast2(const char* mes, int len, unsigned long fontColor, short fontType, short fontSize, short fontAlign, short fontY)
+int intif_broadcast2(const char* mes, size_t len, unsigned int fontColor, short fontType, short fontSize, short fontAlign, short fontY)
 {
 	// Send to the local players
 	clif->broadcast2(NULL, mes, len, fontColor, fontType, fontSize, fontAlign, fontY, ALL_CLIENT);
@@ -201,7 +201,7 @@ int intif_main_message(struct map_session_data* sd, const char* message)
 }
 
 // The transmission of Wisp/Page to inter-server (player not found on this server)
-int intif_wis_message(struct map_session_data *sd, char *nick, char *mes, int mes_len)
+int intif_wis_message(struct map_session_data *sd, char *nick, char *mes, size_t mes_len)
 {
 	nullpo_ret(sd);
 	if (intif->CheckForCharServer())
@@ -247,7 +247,7 @@ int intif_wis_replay(int id, int flag)
 // The transmission of GM only Wisp/Page from server to inter-server
 int intif_wis_message_to_gm(char *wisp_name, int permission, char *mes)
 {
-	int mes_len;
+	size_t mes_len;
 	if (intif->CheckForCharServer())
 		return 0;
 	mes_len = strlen(mes) + 1; // + null
@@ -560,7 +560,7 @@ int intif_guild_addmember(int guild_id,struct guild_member *m)
 }
 
 // Request a new leader for guild
-int intif_guild_change_gm(int guild_id, const char* name, int len)
+int intif_guild_change_gm(int guild_id, const char* name, size_t len)
 {
 	if (intif->CheckForCharServer())
 		return 0;
diff --git a/src/map/intif.h b/src/map/intif.h
index fbee3f270..bd3908ce7 100644
--- a/src/map/intif.h
+++ b/src/map/intif.h
@@ -40,10 +40,10 @@ struct intif_interface {
 	int (*parse) (int fd);
 	int (*create_pet)(int account_id, int char_id, short pet_type, short pet_lv, short pet_egg_id,
 					  short pet_equip, short intimate, short hungry, char rename_flag, char incuvate, char *pet_name);
-	int (*broadcast) (const char* mes, int len, int type);
-	int (*broadcast2) (const char* mes, int len, unsigned long fontColor, short fontType, short fontSize, short fontAlign, short fontY);
+	int (*broadcast) (const char* mes, size_t len, int type);
+	int (*broadcast2) (const char* mes, size_t len, unsigned int fontColor, short fontType, short fontSize, short fontAlign, short fontY);
 	int (*main_message) (struct map_session_data* sd, const char* message);
-	int (*wis_message) (struct map_session_data *sd,char *nick,char *mes,int mes_len);
+	int (*wis_message) (struct map_session_data *sd,char *nick,char *mes,size_t mes_len);
 	int (*wis_message_to_gm) (char *Wisp_name, int permission, char *mes);
 	int (*saveregistry) (struct map_session_data *sd, int type);
 	int (*request_registry) (struct map_session_data *sd, int flag);
@@ -65,7 +65,7 @@ struct intif_interface {
 	int (*guild_memberinfoshort) (int guild_id, int account_id, int char_id, int online, int lv, int class_);
 	int (*guild_break) (int guild_id);
 	int (*guild_message) (int guild_id, int account_id, const char *mes, int len);
-	int (*guild_change_gm) (int guild_id, const char* name, int len);
+	int (*guild_change_gm) (int guild_id, const char* name, size_t len);
 	int (*guild_change_basicinfo) (int guild_id, int type, const void *data, int len);
 	int (*guild_change_memberinfo) (int guild_id, int account_id, int char_id, int type, const void *data, int len);
 	int (*guild_position) (int guild_id, int idx, struct guild_position *p);
diff --git a/src/map/irc-bot.c b/src/map/irc-bot.c
index 2b6dcfccd..ff28082e7 100644
--- a/src/map/irc-bot.c
+++ b/src/map/irc-bot.c
@@ -152,7 +152,8 @@ int irc_parse(int fd) {
  *               NULL, needs to be able to fit an IRC_HOST_LENGTH long string)
  */
 void irc_parse_source(char *source, char *nick, char *ident, char *host) {
-	int i, len = strlen(source), pos = 0;
+	int i, pos = 0;
+	size_t len = strlen(source);
 	unsigned char stage = 0;
 	
 	for(i = 0; i < len; i++) {
@@ -208,7 +209,7 @@ void irc_parse_sub(int fd, char *str) {
  * @param str Command to send
  */
 void irc_send(char *str) {
-	int len = strlen(str) + 2;
+	size_t len = strlen(str) + 2;
 	if (len > IRC_MESSAGE_LENGTH-3)
 		len = IRC_MESSAGE_LENGTH-3;
 	WFIFOHEAD(ircbot->fd, len);
@@ -298,7 +299,7 @@ void irc_privmsg(int fd, char *cmd, char *source, char *target, char *msg) {
 			ircbot->parse_source(source,source_nick,source_ident,source_host);
 				
 		if( ircbot->channel ) {
-			int padding_len = strlen(ircbot->channel->name) + strlen(source_nick) + 13;
+			size_t padding_len = strlen(ircbot->channel->name) + strlen(source_nick) + 13;
 			while (1) {
 				snprintf(send_string, 150, "[ #%s ] IRC.%s : %s",ircbot->channel->name,source_nick,msg);
 				clif->chsys_msg2(ircbot->channel,send_string);
diff --git a/src/map/irc-bot.h b/src/map/irc-bot.h
index 305cdfd91..7d6a19eba 100644
--- a/src/map/irc-bot.h
+++ b/src/map/irc-bot.h
@@ -24,7 +24,7 @@ struct irc_bot_interface {
 	bool isIn, isOn;
 	int64 last_try;
 	unsigned char fails;
-	unsigned long ip;
+	uint32 ip;
 	unsigned short port;
 	/* */
 	struct hChSysCh *channel;
diff --git a/src/map/itemdb.c b/src/map/itemdb.c
index 30f81c354..3f7d06e36 100644
--- a/src/map/itemdb.c
+++ b/src/map/itemdb.c
@@ -806,7 +806,7 @@ bool itemdb_read_cached_packages(const char *config_filename) {
 
 	for( i = 0; i < pcount; i++ ) {
 		unsigned short id = 0, random_qty = 0, must_qty = 0;
-		struct item_data *data;
+		struct item_data *pdata;
 		struct item_package *package = &itemdb->packages[i];
 		unsigned short c;
 		
@@ -817,10 +817,10 @@ bool itemdb_read_cached_packages(const char *config_filename) {
 		//next 2 bytes = random count
 		hread(&random_qty,sizeof(random_qty),1,file);
 		
-		if( !(data = itemdb->exists(id)) )
+		if( !(pdata = itemdb->exists(id)) )
 			ShowWarning("itemdb_read_packages: unknown package item '%d', skipping..\n",id);
 		else
-			data->package = &itemdb->packages[i];
+			pdata->package = &itemdb->packages[i];
 		
 		package->id = id;
 		package->random_qty = random_qty;
@@ -1022,7 +1022,6 @@ void itemdb_read_packages(void) {
 		for(r = 0; r < highest_gcount; r++) {
 			prev[r] = NULL;
 		}
-		r = 0;
 		
 		data->package = &itemdb->packages[count];
 		
@@ -1300,7 +1299,7 @@ bool itemdb_read_stack(char* fields[], int columns, int current)
 	}
 
 	amount = (unsigned short)strtoul(fields[1], NULL, 10);
-	type = strtoul(fields[2], NULL, 10);
+	type = (unsigned int)strtoul(fields[2], NULL, 10);
 
 	if( !amount )
 	{// ignore
diff --git a/src/map/map.c b/src/map/map.c
index b68a1f6a5..3a018828a 100644
--- a/src/map/map.c
+++ b/src/map/map.c
@@ -2239,7 +2239,7 @@ bool map_addnpc(int16 m,struct npc_data *nd) {
 // Stores the spawn data entry in the mob list.
 // Returns the index of successful, or -1 if the list was full.
 int map_addmobtolist(unsigned short m, struct spawn_data *spawn) {
-	size_t i;
+	int i;
 	ARR_FIND( 0, MAX_MOB_LIST_PER_MAP, i, map->list[m].moblist[i] == NULL );
 	if( i < MAX_MOB_LIST_PER_MAP ) {
 		map->list[m].moblist[i] = spawn;
@@ -3684,7 +3684,7 @@ void map_zone_remove(int m) {
 	unsigned short k;
 	char empty[1] = "\0";
 	for(k = 0; k < map->list[m].zone_mf_count; k++) {
-		int len = strlen(map->list[m].zone_mf[k]),j;
+		size_t len = strlen(map->list[m].zone_mf[k]),j;
 		params[0] = '\0';
 		memcpy(flag, map->list[m].zone_mf[k], MAP_ZONE_MAPFLAG_LENGTH);
 		for(j = 0; j < len; j++) {
@@ -4236,7 +4236,7 @@ bool map_zone_mf_cache(int m, char *flag, char *params) {
 	} else if (!strcmpi(flag,"adjust_unit_duration")) {
 		int skill_id, k;
 		char skill_name[MAP_ZONE_MAPFLAG_LENGTH], modifier[MAP_ZONE_MAPFLAG_LENGTH];
-		int len = strlen(params);
+		size_t len = strlen(params);
 
 		modifier[0] = '\0';
 		memcpy(skill_name, params, MAP_ZONE_MAPFLAG_LENGTH);
@@ -4254,7 +4254,6 @@ bool map_zone_mf_cache(int m, char *flag, char *params) {
 		} else {
 			int idx = map->list[m].unit_count;
 
-			k = 0;
 			ARR_FIND(0, idx, k, map->list[m].units[k]->skill_id == skill_id);
 
 			if( k < idx ) {
@@ -4270,7 +4269,7 @@ bool map_zone_mf_cache(int m, char *flag, char *params) {
 	} else if (!strcmpi(flag,"adjust_skill_damage")) {
 		int skill_id, k;
 		char skill_name[MAP_ZONE_MAPFLAG_LENGTH], modifier[MAP_ZONE_MAPFLAG_LENGTH];
-		int len = strlen(params);
+		size_t len = strlen(params);
 
 		modifier[0] = '\0';
 		memcpy(skill_name, params, MAP_ZONE_MAPFLAG_LENGTH);
@@ -4288,7 +4287,6 @@ bool map_zone_mf_cache(int m, char *flag, char *params) {
 		} else {
 			int idx = map->list[m].skill_count;
 
-			k = 0;
 			ARR_FIND(0, idx, k, map->list[m].skills[k]->skill_id == skill_id);
 
 			if( k < idx ) {
@@ -4414,7 +4412,7 @@ void map_zone_apply(int m, struct map_zone_data *zone, const char* start, const
 	char flag[MAP_ZONE_MAPFLAG_LENGTH], params[MAP_ZONE_MAPFLAG_LENGTH];
 	map->list[m].zone = zone;
 	for(i = 0; i < zone->mapflags_count; i++) {
-		int len = strlen(zone->mapflags[i]);
+		size_t len = strlen(zone->mapflags[i]);
 		int k;
 		params[0] = '\0';
 		memcpy(flag, zone->mapflags[i], MAP_ZONE_MAPFLAG_LENGTH);
@@ -4442,7 +4440,7 @@ void map_zone_init(void) {
 	zone = &map->zone_all;
 
 	for(i = 0; i < zone->mapflags_count; i++) {
-		int len = strlen(zone->mapflags[i]);
+		size_t len = strlen(zone->mapflags[i]);
 		params[0] = '\0';
 		memcpy(flag, zone->mapflags[i], MAP_ZONE_MAPFLAG_LENGTH);
 		for(k = 0; k < len; k++) {
@@ -4465,7 +4463,7 @@ void map_zone_init(void) {
 	if( battle_config.pk_mode ) {
 		zone = &map->zone_pk;
 		for(i = 0; i < zone->mapflags_count; i++) {
-			int len = strlen(zone->mapflags[i]);
+			size_t len = strlen(zone->mapflags[i]);
 			params[0] = '\0';
 			memcpy(flag, zone->mapflags[i], MAP_ZONE_MAPFLAG_LENGTH);
 			for(k = 0; k < len; k++) {
diff --git a/src/map/mob.c b/src/map/mob.c
index 8c02503aa..90a967d61 100644
--- a/src/map/mob.c
+++ b/src/map/mob.c
@@ -878,14 +878,15 @@ int mob_setdelayspawn(struct mob_data *md)
 }
 
 int mob_count_sub(struct block_list *bl, va_list ap) {
-    int mobid[10], i;
-    ARR_FIND(0, 10, i, (mobid[i] = va_arg(ap, int)) == 0); //fetch till 0
-    if (mobid[0]) { //if there one let's check it otherwise go backward
-        TBL_MOB *md = BL_CAST(BL_MOB, bl);
-        ARR_FIND(0, 10, i, md->class_ == mobid[i]);
-        return (i < 10) ? 1 : 0;
-    }
-    return 1; //backward compatibility
+	int mobid[10] = { 0 }, i;
+	ARR_FIND(0, 10, i, (mobid[i] = va_arg(ap, int)) == 0); //fetch till 0
+	if (mobid[0]) { //if there one let's check it otherwise go backward
+		TBL_MOB *md = BL_CAST(BL_MOB, bl);
+		nullpo_ret(md);
+		ARR_FIND(0, 10, i, md->class_ == mobid[i]);
+		return (i < 10) ? 1 : 0;
+	}
+	return 1; //backward compatibility
 }
 
 /*==========================================
@@ -4104,7 +4105,7 @@ bool mob_parse_row_chatdb(char** str, const char* source, int line, int* last_ms
 	//MSG ID
 	ms->msg_id=msg_id;
 	//Color
-	ms->color=strtoul(str[1],NULL,0);
+	ms->color=(unsigned int)strtoul(str[1],NULL,0);
 	//Message
 	msg = str[2];
 	len = strlen(msg);
diff --git a/src/map/mob.h b/src/map/mob.h
index 605a8b465..9321cb4fd 100644
--- a/src/map/mob.h
+++ b/src/map/mob.h
@@ -91,7 +91,7 @@ struct mob_skill {
 
 struct mob_chat {
 	unsigned short msg_id;
-	unsigned long color;
+	unsigned int color;
 	char msg[CHAT_SIZE_MAX];
 };
 
diff --git a/src/map/npc.c b/src/map/npc.c
index b57627495..84a2446ad 100644
--- a/src/map/npc.c
+++ b/src/map/npc.c
@@ -460,10 +460,10 @@ void npc_event_do_oninit(void)
  *------------------------------------------*/
 int npc_timerevent_export(struct npc_data *nd, int i)
 {
-	int t = 0, k = 0;
+	int t = 0, len = 0;
 	char *lname = nd->u.scr.label_list[i].name;
 	int pos = nd->u.scr.label_list[i].pos;
-	if (sscanf(lname, "OnTimer%d%n", &t, &k) == 1 && lname[k] == '\0') {
+	if (sscanf(lname, "OnTimer%d%n", &t, &len) == 1 && lname[len] == '\0') {
 		// Timer event
 		struct npc_timerevent_list *te = nd->u.scr.timer_event;
 		int j, k = nd->u.scr.timeramount;
@@ -1616,7 +1616,7 @@ int npc_selllist_sub(struct map_session_data* sd, int n, unsigned short* item_li
 /// @return result code for clif->parse_NpcSellListSend
 int npc_selllist(struct map_session_data* sd, int n, unsigned short* item_list) {
 	double z;
-	int i,skill_t, idx = skill->get_index(MC_OVERCHARGE);
+	int i,skill_t, skill_idx = skill->get_index(MC_OVERCHARGE);
 	struct npc_data *nd;
 
 	nullpo_retr(1, sd);
@@ -1680,9 +1680,9 @@ int npc_selllist(struct map_session_data* sd, int n, unsigned short* item_list)
 	pc->getzeny(sd, (int)z, LOG_TYPE_NPC, NULL);
 
 	// custom merchant shop exp bonus
-	if( battle_config.shop_exp > 0 && z > 0 && ( skill_t = pc->checkskill2(sd,idx) ) > 0) {
-		if( sd->status.skill[idx].flag >= SKILL_FLAG_REPLACED_LV_0 )
-			skill_t = sd->status.skill[idx].flag - SKILL_FLAG_REPLACED_LV_0;
+	if( battle_config.shop_exp > 0 && z > 0 && ( skill_t = pc->checkskill2(sd,skill_idx) ) > 0) {
+		if( sd->status.skill[skill_idx].flag >= SKILL_FLAG_REPLACED_LV_0 )
+			skill_t = sd->status.skill[skill_idx].flag - SKILL_FLAG_REPLACED_LV_0;
 
 		if( skill_t > 0 ) {
 			z = z * (double)skill_t * (double)battle_config.shop_exp/10000.;
@@ -2311,7 +2311,7 @@ void npc_convertlabel_db(struct npc_label_list* label_list, const char *filepath
 		int lpos = script->labels[i].pos;
 		struct npc_label_list* label;
 		const char *p;
-		int len;
+		size_t len;
 				
 		// In case of labels not terminated with ':', for user defined function support
 		p = lname;
@@ -2859,7 +2859,6 @@ int npc_do_atcmd_event(struct map_session_data* sd, const char* command, const c
 	}
 
 	if( sd->npc_id != 0 ) { // Enqueue the event trigger.
-		int i;
 		ARR_FIND( 0, MAX_EVENTQUEUE, i, sd->eventqueue[i][0] == '\0' );
 		if( i < MAX_EVENTQUEUE ) {
 			safestrncpy(sd->eventqueue[i],eventname,50); //Event enqueued.
@@ -3370,7 +3369,7 @@ const char* npc_parse_mapflag(char* w1, char* w2, char* w3, char* w4, const char
 	else if (!strcmpi(w3,"adjust_unit_duration")) {
 		int skill_id, k;
 		char skill_name[MAP_ZONE_MAPFLAG_LENGTH], modifier[MAP_ZONE_MAPFLAG_LENGTH];
-		int len = w4 ? strlen(w4) : 0;
+		size_t len = w4 ? strlen(w4) : 0;
 		
 		modifier[0] = '\0';
 		if( w4 )
@@ -3425,7 +3424,7 @@ const char* npc_parse_mapflag(char* w1, char* w2, char* w3, char* w4, const char
 	} else if (!strcmpi(w3,"adjust_skill_damage")) {
 		int skill_id, k;
 		char skill_name[MAP_ZONE_MAPFLAG_LENGTH], modifier[MAP_ZONE_MAPFLAG_LENGTH];
-		int len = w4 ? strlen(w4) : 0;
+		size_t len = w4 ? strlen(w4) : 0;
 		
 		modifier[0] = '\0';
 		
@@ -3554,7 +3553,7 @@ int npc_parsesrcfile(const char* filepath, bool runOnInit) {
 		lines++;
 
 		// w1<TAB>w2<TAB>w3<TAB>w4
-		count = sv->parse(p, len+buffer-p, 0, '\t', pos, ARRAYLENGTH(pos), (e_svopt)(SV_TERMINATE_LF|SV_TERMINATE_CRLF));
+		count = sv->parse(p, (int)(len+buffer-p), 0, '\t', pos, ARRAYLENGTH(pos), (e_svopt)(SV_TERMINATE_LF|SV_TERMINATE_CRLF));
 		if( count < 0 )
 		{
 			ShowError("npc_parsesrcfile: Parse error in file '%s', line '%d'. Stopping...\n", filepath, strline(buffer,p-buffer));
diff --git a/src/map/party.h b/src/map/party.h
index 91f4c1b7d..0041b1462 100644
--- a/src/map/party.h
+++ b/src/map/party.h
@@ -44,9 +44,9 @@ struct party_booking_detail {
 };
 
 struct party_booking_ad_info {
-	unsigned long index;
+	unsigned int index;
 	char charname[NAME_LENGTH];
-	long expiretime;
+	int expiretime;
 	struct party_booking_detail p_detail;
 };
 #else /* PARTY_RECRUIT */
@@ -56,8 +56,8 @@ struct party_booking_detail {
 };
 
 struct party_booking_ad_info {
-	unsigned long index;
-	long expiretime;
+	unsigned int index;
+	int expiretime;
 	char charname[NAME_LENGTH];
 	struct party_booking_detail p_detail;
 };
@@ -71,7 +71,7 @@ struct party_booking_ad_info {
 struct party_interface {
 	DBMap* db; // int party_id -> struct party_data* (releases data)
 	DBMap* booking_db; // int char_id -> struct party_booking_ad_info* (releases data) // Party Booking [Spiria]
-	unsigned long booking_nextid;
+	unsigned int booking_nextid;
 	/* funcs */
 	void (*init) (bool minimal);
 	void (*final) (void);
diff --git a/src/map/path.c b/src/map/path.c
index a47677cf5..21d14c815 100644
--- a/src/map/path.c
+++ b/src/map/path.c
@@ -184,8 +184,10 @@ bool path_search_long(struct shootpath_data *spd,int16 m,int16 x0,int16 y0,int16
 /// Ensures there is enough space in array to store new element.
 static void heap_push_node(struct node_heap *heap, struct path_node *node)
 {
+#ifndef __clang_analyzer__ // TODO: Figure out why clang's static analyzer doesn't like this
 	BHEAP_ENSURE(*heap, 1, 256);
 	BHEAP_PUSH(*heap, node, NODE_MINTOPCMP, swap_ptr);
+#endif // __clang_analyzer__
 }
 
 /// Updates path_node in the binary node_heap.
diff --git a/src/map/pc.c b/src/map/pc.c
index ab5749eb1..24b57c826 100644
--- a/src/map/pc.c
+++ b/src/map/pc.c
@@ -4437,7 +4437,6 @@ int pc_useitem(struct map_session_data *sd,int n) {
 		return 0;
 
 	if( sd->inventory_data[n]->delay > 0 ) {
-		int i;
 		ARR_FIND(0, MAX_ITEMDELAYS, i, sd->item_delay[i].nameid == nameid );
 			if( i == MAX_ITEMDELAYS ) /* item not found. try first empty now */
 				ARR_FIND(0, MAX_ITEMDELAYS, i, !sd->item_delay[i].nameid );
@@ -4922,9 +4921,10 @@ int pc_setpos(struct map_session_data* sd, unsigned short map_index, int x, int
 			if( i != sd->guild->instances ) {
 				m = instance->list[sd->guild->instance[i]].map[j];
 				map_index = map_id2index(m);
-				stop = true;
+				//stop = true; Uncomment if adding new checks
 			}
 		}
+
 		/* we hit a instance, if empty we populate the spawn data */
 		if( map->list[m].instance_id >= 0 && instance->list[map->list[m].instance_id].respawn.map == 0 &&
 		    instance->list[map->list[m].instance_id].respawn.x == 0 &&
@@ -6789,15 +6789,15 @@ void pc_damage(struct map_session_data *sd,struct block_list *src,unsigned int h
  * Invoked when a player has negative current hp
  *------------------------------------------*/
 int pc_dead(struct map_session_data *sd,struct block_list *src) {
-	int i=0,j=0,k=0;
+	int i=0,j=0;
 	int64 tick = timer->gettick();
 
-	for(k = 0; k < 5; k++)
-		if (sd->devotion[k]){
-			struct map_session_data *devsd = map->id2sd(sd->devotion[k]);
+	for(j = 0; j < 5; j++)
+		if (sd->devotion[j]){
+			struct map_session_data *devsd = map->id2sd(sd->devotion[j]);
 			if (devsd)
 				status_change_end(&devsd->bl, SC_DEVOTION, INVALID_TIMER);
-			sd->devotion[k] = 0;
+			sd->devotion[j] = 0;
 		}
 
 	if(sd->status.pet_id > 0 && sd->pd) {
@@ -7057,14 +7057,13 @@ int pc_dead(struct map_session_data *sd,struct block_list *src) {
 			if(id == 0)
 				continue;
 			if(id == -1){
-				int eq_num=0,eq_n[MAX_INVENTORY];
+				int eq_num=0,eq_n[MAX_INVENTORY],k;
 				memset(eq_n,0,sizeof(eq_n));
 				for(i=0;i<MAX_INVENTORY;i++){
 					if( (type == 1 && !sd->status.inventory[i].equip)
 						|| (type == 2 && sd->status.inventory[i].equip)
 						||  type == 3)
 					{
-						int k;
 						ARR_FIND( 0, MAX_INVENTORY, k, eq_n[k] <= 0 );
 						if( k < MAX_INVENTORY )
 							eq_n[k] = i;
@@ -10206,7 +10205,7 @@ int pc_readdb(void) {
 			int stat;
 			if(line[0]=='/' && line[1]=='/')
 				continue;
-			if ((stat=strtoul(line,NULL,10))<0)
+			if ((stat=(int)strtol(line,NULL,10))<0)
 				stat=0;
 			if (i > MAX_LEVEL)
 				break;
diff --git a/src/map/pc_groups.c b/src/map/pc_groups.c
index f95878e97..59dd951c7 100644
--- a/src/map/pc_groups.c
+++ b/src/map/pc_groups.c
@@ -131,7 +131,7 @@ static void read_config(void) {
 		iter = db_iterator(pcg->db);
 		for (group_settings = dbi_first(iter); dbi_exists(iter); group_settings = dbi_next(iter)) {
 			config_setting_t *commands = group_settings->commands, *permissions = group_settings->permissions;
-			int count = 0, i;
+			int count = 0;
 
 			// Make sure there is "commands" group
 			if (commands == NULL)
@@ -209,15 +209,15 @@ static void read_config(void) {
 
 					// Copy settings (commands/permissions) that are not defined yet
 					if (inherited_group->commands != NULL) {
-						int i = 0, commands_count = config_setting_length(inherited_group->commands);
-						for (i = 0; i < commands_count; ++i)
-							config_setting_copy(commands, config_setting_get_elem(inherited_group->commands, i));
+						int k = 0, commands_count = config_setting_length(inherited_group->commands);
+						for (k = 0; k < commands_count; ++k)
+							config_setting_copy(commands, config_setting_get_elem(inherited_group->commands, k));
 					}
 
 					if (inherited_group->permissions != NULL) {
-						int i = 0, permissions_count = config_setting_length(inherited_group->permissions);
-						for (i = 0; i < permissions_count; ++i)
-							config_setting_copy(permissions, config_setting_get_elem(inherited_group->permissions, i));
+						int k = 0, permissions_count = config_setting_length(inherited_group->permissions);
+						for (k = 0; k < permissions_count; ++k)
+							config_setting_copy(permissions, config_setting_get_elem(inherited_group->permissions, k));
 					}
 
 					++done; // copied commands and permissions from one of inherited groups
@@ -241,7 +241,7 @@ static void read_config(void) {
 		iter = db_iterator(pcg->db);
 		for (group_settings = dbi_first(iter); dbi_exists(iter); group_settings = dbi_next(iter)) {
 			config_setting_t *permissions = group_settings->permissions;
-			int i, count = config_setting_length(permissions);
+			int count = config_setting_length(permissions);
 
 			for (i = 0; i < count; ++i) {
 				config_setting_t *perm = config_setting_get_elem(permissions, i);
@@ -261,20 +261,20 @@ static void read_config(void) {
 		// Fetch all groups and relevant config setting and send them
 		// to atcommand->load_group() for processing.
 		if (group_count > 0) {
-			int i = 0;
-			GroupSettings **groups = NULL;
+			GroupSettings **pc_groups = NULL;
 			config_setting_t **commands = NULL;
-			CREATE(groups, GroupSettings*, group_count);
+			CREATE(pc_groups, GroupSettings*, group_count);
 			CREATE(commands, config_setting_t*, group_count);
+			i = 0;
 			iter = db_iterator(pcg->db);
 			for (group_settings = dbi_first(iter); dbi_exists(iter); group_settings = dbi_next(iter)) {
-				groups[i] = group_settings;
+				pc_groups[i] = group_settings;
 				commands[i] = group_settings->commands;
 				i++;
 			}
-			atcommand->load_groups(groups, commands, group_count);
+			atcommand->load_groups(pc_groups, commands, group_count);
 			dbi_destroy(iter);
-			aFree(groups);
+			aFree(pc_groups);
 			aFree(commands);
 		}
 	}
diff --git a/src/map/script.c b/src/map/script.c
index 008298fa3..744825257 100644
--- a/src/map/script.c
+++ b/src/map/script.c
@@ -275,14 +275,14 @@ void script_reportfunc(struct script_state* st)
 /*==========================================
  * Output error message
  *------------------------------------------*/
-void disp_error_message2(const char *mes,const char *pos,int report)
-{
+static void disp_error_message2(const char *mes,const char *pos,int report) analyzer_noreturn;
+static void disp_error_message2(const char *mes,const char *pos,int report) {
 	script->error_msg = aStrdup(mes);
 	script->error_pos = pos;
 	script->error_report = report;
 	longjmp( script->error_jump, 1 );
 }
-#define disp_error_message(mes,pos) (script->disp_error_message2((mes),(pos),1))
+#define disp_error_message(mes,pos) (disp_error_message2((mes),(pos),1))
 
 void disp_warning_message(const char *mes, const char *pos) {
 	script->warning(script->parser_current_src,script->parser_current_file,script->parser_current_line,mes,pos);
@@ -728,7 +728,7 @@ const char* skip_word(const char* p) {
 /// @see skip_word
 /// @see script->add_str
 int add_word(const char* p) {
-	int len;
+	size_t len;
 	int i;
 
 	// Check for a word
@@ -1204,7 +1204,7 @@ const char* script_parse_subexpr(const char* p,int limit) {
 		}
 	}
 
-	if( (op=C_ADD_PRE,p[0]=='+'&&p[1]=='+') || (op=C_SUB_PRE,p[0]=='-'&&p[1]=='-') ) { // Pre ++ -- operators
+	if( (p[0]=='+' && p[1]=='+') /* C_ADD_PRE */ || (p[0]=='-'&&p[1]=='-') /* C_SUB_PRE */ ) { // Pre ++ -- operators
 		p=script->parse_variable(p);
 	} else if( (op=C_NEG,*p=='-') || (op=C_LNOT,*p=='!') || (op=C_NOT,*p=='~') ) { // Unary - ! ~ operators
 		p=script->parse_subexpr(p+1,11);
@@ -1459,7 +1459,7 @@ const char* parse_syntax(const char* p)
 				// check whether case label is integer or not
 				if(is_number(p)) {
 					//Numeric value
-					v = strtol(p,&np,0);
+					v = (int)strtol(p,&np,0);
 					if((*p == '-' || *p == '+') && ISDIGIT(p[1])) // pre-skip because '-' can not skip_word
 						p++;
 					p = script->skip_word(p);
@@ -1468,7 +1468,7 @@ const char* parse_syntax(const char* p)
 				} else {
 					//Check for constants
 					p2 = script->skip_word(p);
-					v = p2-p; // length of word at p2
+					v = (int)(size_t) (p2-p); // length of word at p2
 					memcpy(label,p,v);
 					label[v]='\0';
 					if( !script->get_constant(label, &v) )
@@ -1936,8 +1936,6 @@ const char* parse_syntax_close_sub(const char* p,int* flag)
 		}
 		return p;
 	} else if(script->syntax.curly[pos].type == TYPE_DO) {
-		int l;
-		char label[256];
 		const char *p2;
 
 		if(script->syntax.curly[pos].flag) {
@@ -2023,10 +2021,7 @@ const char* parse_syntax_close_sub(const char* p,int* flag)
 		script->set_label(l,script->pos,p);
 		script->syntax.curly_count--;
 		return p;
-	} else if(script->syntax.curly[script->syntax.curly_count-1].type == TYPE_USERFUNC) {
-		int pos = script->syntax.curly_count-1;
-		char label[256];
-		int l;
+	} else if(script->syntax.curly[pos].type == TYPE_USERFUNC) {
 		// Back
 		sprintf(label,"return;");
 		script->syntax.curly[script->syntax.curly_count++].type = TYPE_NULL;
@@ -2275,7 +2270,6 @@ struct script_code* parse_script(const char *src,const char *file,int line,int o
 
 	if( setjmp( script->error_jump ) != 0 ) {
 		//Restore program state when script has problems. [from jA]
-		int i;
 		const int size = ARRAYLENGTH(script->syntax.curly);
 		if( script->error_report )
 			script->error(src,file,line,script->error_msg,script->error_pos);
@@ -6165,10 +6159,8 @@ BUILDIN(getitem)
  *------------------------------------------*/
 BUILDIN(getitem2)
 {
-	int nameid,amount,get_count,i,flag = 0, offset = 0;
+	int nameid,amount,i,flag = 0, offset = 0;
 	int iden,ref,attr,c1,c2,c3,c4, bound = 0;
-	struct item_data *item_data;
-	struct item item_tmp;
 	TBL_PC *sd;
 	struct script_data *data;
 	
@@ -6221,8 +6213,10 @@ BUILDIN(getitem2)
 	}
 	
 	if(nameid > 0) {
+		struct item item_tmp;
+		struct item_data *item_data = itemdb->exists(nameid);
+		int get_count;
 		memset(&item_tmp,0,sizeof(item_tmp));
-		item_data=itemdb->exists(nameid);
 		if (item_data == NULL)
 			return -1;
 		if(item_data->type==IT_WEAPON || item_data->type==IT_ARMOR){
@@ -9332,12 +9326,12 @@ BUILDIN(announce) {
 		}
 
 		if (fontColor)
-			clif->broadcast2(bl, mes, (int)strlen(mes)+1, strtol(fontColor, (char **)NULL, 0), fontType, fontSize, fontAlign, fontY, target);
+			clif->broadcast2(bl, mes, (int)strlen(mes)+1, (unsigned int)strtoul(fontColor, (char **)NULL, 0), fontType, fontSize, fontAlign, fontY, target);
 		else
 			clif->broadcast(bl, mes, (int)strlen(mes)+1, flag&BC_COLOR_MASK, target);
 	} else {
 		if (fontColor)
-			intif->broadcast2(mes, (int)strlen(mes)+1, strtol(fontColor, (char **)NULL, 0), fontType, fontSize, fontAlign, fontY);
+			intif->broadcast2(mes, (int)strlen(mes)+1, (unsigned int)strtoul(fontColor, (char **)NULL, 0), fontType, fontSize, fontAlign, fontY);
 		else
 			intif->broadcast(mes, (int)strlen(mes)+1, flag&BC_COLOR_MASK);
 	}
@@ -9356,7 +9350,7 @@ int buildin_announce_sub(struct block_list *bl, va_list ap)
 	short fontAlign = (short)va_arg(ap, int);
 	short fontY     = (short)va_arg(ap, int);
 	if (fontColor)
-		clif->broadcast2(bl, mes, len, strtol(fontColor, (char **)NULL, 0), fontType, fontSize, fontAlign, fontY, SELF);
+		clif->broadcast2(bl, mes, len, (unsigned int)strtoul(fontColor, (char **)NULL, 0), fontType, fontSize, fontAlign, fontY, SELF);
 	else
 		clif->broadcast(bl, mes, len, type, SELF);
 	return 0;
@@ -13502,7 +13496,7 @@ BUILDIN(insertchar)
 	if(index < 0)
 		index = 0;
 	else if(index > len)
-		index = len;
+		index = (int)len;
 	
 	output = (char*)aMalloc(len + 2);
 	
@@ -13685,9 +13679,9 @@ BUILDIN(implode)
 {
 	struct script_data* data = script_getdata(st, 2);
 	const char *glue = NULL, *name, *temp;
-	int32 glue_len = 0, array_size, id;
-	size_t len = 0;
-	int i, k = 0;
+	int32 array_size, id;
+	size_t len = 0, glue_len = 0, k = 0;
+	int i;
 	
 	TBL_PC* sd = NULL;
 	
@@ -13782,13 +13776,14 @@ BUILDIN(implode)
 //-------------------------------------------------------
 BUILDIN(sprintf)
 {
-    unsigned int len, argc = 0, arg = 0, buf2_len = 0;
+    unsigned int argc = 0, arg = 0;
     const char* format;
     char* p;
     char* q;
     char* buf  = NULL;
     char* buf2 = NULL;
     struct script_data* data;
+	size_t len, buf2_len = 0;
     StringBuf final_buf;
 	
     // Fetch init data
@@ -13913,7 +13908,7 @@ BUILDIN(sprintf)
 // Implements C sscanf.
 //-------------------------------------------------------
 BUILDIN(sscanf){
-    unsigned int argc, arg = 0, len;
+    unsigned int argc, arg = 0;
     struct script_data* data;
     struct map_session_data* sd = NULL;
     const char* str;
@@ -13924,6 +13919,7 @@ BUILDIN(sscanf){
     char* buf_p;
     char* ref_str = NULL;
     int ref_int;
+	size_t len;
 	
     // Get data
     str = script_getstr(st, 2);
@@ -16704,7 +16700,7 @@ BUILDIN(progressbar)
 	sd->progressbar.timeout = timer->gettick() + second*1000;
 	sd->state.workinprogress = 3;
 	
-	clif->progressbar(sd, strtol(color, (char **)NULL, 0), second);
+	clif->progressbar(sd, (unsigned int)strtoul(color, (char **)NULL, 0), second);
     return true;
 }
 
@@ -18034,7 +18030,8 @@ BUILDIN(instance_set_respawn) {
  * @return Whether the function was successfully added.
  */
 bool script_add_builtin(const struct script_function *buildin, bool override) {
-	int slen = 0, n = 0, offset = 0;
+	int n = 0, offset = 0;
+	size_t slen;
 	if( !buildin ) {
 		return false;
 	}
@@ -18769,7 +18766,6 @@ void script_defaults(void) {
 	script->reportsrc = script_reportsrc;
 	script->reportdata = script_reportdata;
 	script->reportfunc = script_reportfunc;
-	script->disp_error_message2 = disp_error_message2;
 	script->disp_warning_message = disp_warning_message;
 	script->check_event = check_event;
 	script->calc_hash = calc_hash;
diff --git a/src/map/script.h b/src/map/script.h
index d1d131af3..8076ea02e 100644
--- a/src/map/script.h
+++ b/src/map/script.h
@@ -480,12 +480,12 @@ struct script_interface {
 	int str_num; // next id to be assigned
 	// str_buf holds the strings themselves
 	char *str_buf;
-	int str_size; // size of the buffer
+	size_t str_size; // size of the buffer
 	int str_pos; // next position to be assigned
 	int str_hash[SCRIPT_HASH_SIZE];
 	/* */
 	char *word_buf;
-	int word_size;
+	size_t word_size;
 	/*  */
 	unsigned short current_item_id;
 	/* */
@@ -594,7 +594,6 @@ struct script_interface {
 	void (*reportsrc) (struct script_state *st);
 	void (*reportdata) (struct script_data *data);
 	void (*reportfunc) (struct script_state *st);
-	void (*disp_error_message2) (const char *mes, const char *pos, int report);
 	void (*disp_warning_message) (const char *mes, const char *pos);
 	void (*check_event) (struct script_state *st, const char *evt);
 	unsigned int (*calc_hash) (const char *p);
diff --git a/src/map/skill.c b/src/map/skill.c
index 650594abc..245df05e5 100644
--- a/src/map/skill.c
+++ b/src/map/skill.c
@@ -328,6 +328,8 @@ int skill_calc_heal(struct block_list *src, struct block_list *target, uint16 sk
 	struct map_session_data *tsd = BL_CAST(BL_PC, target);
 	struct status_change* sc;
 
+	nullpo_ret(src);
+
 	switch( skill_id ) {
 		case BA_APPLEIDUN:
 #ifdef RENEWAL
@@ -1434,7 +1436,7 @@ int skill_additional_effect(struct block_list* src, struct block_list *bl, uint1
 	if( sd && !status->isdead(bl) && sd->autospell[0].id ) {
 		struct block_list *tbl;
 		struct unit_data *ud;
-		int i, skill_lv, type, notok;
+		int i, auto_skill_lv, type, notok;
 
 		for (i = 0; i < ARRAYLENGTH(sd->autospell) && sd->autospell[i].id; i++) {
 
@@ -1452,8 +1454,8 @@ int skill_additional_effect(struct block_list* src, struct block_list *bl, uint1
 			if ( notok )
 				continue;
 
-			skill_lv = sd->autospell[i].lv?sd->autospell[i].lv:1;
-			if (skill_lv < 0) skill_lv = 1+rnd()%(-skill_lv);
+			auto_skill_lv = sd->autospell[i].lv?sd->autospell[i].lv:1;
+			if (auto_skill_lv < 0) auto_skill_lv = 1+rnd()%(-auto_skill_lv);
 
 			rate = (!sd->state.arrow_atk) ? sd->autospell[i].rate : sd->autospell[i].rate / 2;
 
@@ -1466,18 +1468,18 @@ int skill_additional_effect(struct block_list* src, struct block_list *bl, uint1
 				int maxcount = 0;
 				if( !(BL_PC&battle_config.skill_reiteration) &&
 					skill->get_unit_flag(temp)&UF_NOREITERATION &&
-					skill->check_unit_range(src,tbl->x,tbl->y,temp,skill_lv)
+					skill->check_unit_range(src,tbl->x,tbl->y,temp,auto_skill_lv)
 				  ) {
 					continue;
 				}
 				if( BL_PC&battle_config.skill_nofootset &&
 					skill->get_unit_flag(temp)&UF_NOFOOTSET &&
-					skill->check_unit_range2(src,tbl->x,tbl->y,temp,skill_lv)
+					skill->check_unit_range2(src,tbl->x,tbl->y,temp,auto_skill_lv)
 				  ) {
 					continue;
 				}
 				if( BL_PC&battle_config.land_skill_limit &&
-					(maxcount = skill->get_maxcount(temp, skill_lv)) > 0
+					(maxcount = skill->get_maxcount(temp, auto_skill_lv)) > 0
 				  ) {
 					int v;
 					for(v=0;v<MAX_SKILLUNITGROUP && sd->ud.skillunit[v] && maxcount;v++) {
@@ -1490,7 +1492,7 @@ int skill_additional_effect(struct block_list* src, struct block_list *bl, uint1
 				}
 			}
 			if( battle_config.autospell_check_range &&
-				!battle->check_range(src, tbl, skill->get_range2(src, temp,skill_lv) + (temp == RG_CLOSECONFINE?0:1)) )
+				!battle->check_range(src, tbl, skill->get_range2(src, temp,auto_skill_lv) + (temp == RG_CLOSECONFINE?0:1)) )
 				continue;
 
 			if (temp == AS_SONICBLOW)
@@ -1499,24 +1501,24 @@ int skill_additional_effect(struct block_list* src, struct block_list *bl, uint1
 				type = CAST_GROUND;
 
 			sd->state.autocast = 1;
-			skill->consume_requirement(sd,temp,skill_lv,1);
+			skill->consume_requirement(sd,temp,auto_skill_lv,1);
 			skill->toggle_magicpower(src, temp);
 			switch (type) {
 				case CAST_GROUND:
-					skill->castend_pos2(src, tbl->x, tbl->y, temp, skill_lv, tick, 0);
+					skill->castend_pos2(src, tbl->x, tbl->y, temp, auto_skill_lv, tick, 0);
 					break;
 				case CAST_NODAMAGE:
-					skill->castend_nodamage_id(src, tbl, temp, skill_lv, tick, 0);
+					skill->castend_nodamage_id(src, tbl, temp, auto_skill_lv, tick, 0);
 					break;
 				case CAST_DAMAGE:
-					skill->castend_damage_id(src, tbl, temp, skill_lv, tick, 0);
+					skill->castend_damage_id(src, tbl, temp, auto_skill_lv, tick, 0);
 					break;
 			}
 			sd->state.autocast = 0;
 			//Set canact delay. [Skotlex]
 			ud = unit->bl2ud(src);
 			if (ud) {
-				rate = skill->delay_fix(src, temp, skill_lv);
+				rate = skill->delay_fix(src, temp, auto_skill_lv);
 				if (DIFF_TICK(ud->canact_tick, tick + rate) < 0){
 					ud->canact_tick = tick+rate;
 					if ( battle_config.display_status_timers && sd )
@@ -1779,7 +1781,7 @@ int skill_counter_additional_effect(struct block_list* src, struct block_list *b
 	if(dstsd && !status->isdead(bl) && dstsd->autospell2[0].id && !(skill_id && skill->get_nk(skill_id)&NK_NO_DAMAGE)) {
 		struct block_list *tbl;
 		struct unit_data *ud;
-		int i, skill_id, skill_lv, rate, type, notok;
+		int i, auto_skill_id, auto_skill_lv, type, notok;
 
 		for (i = 0; i < ARRAYLENGTH(dstsd->autospell2) && dstsd->autospell2[i].id; i++) {
 
@@ -1788,16 +1790,16 @@ int skill_counter_additional_effect(struct block_list* src, struct block_list *b
 				 dstsd->autospell2[i].flag&attack_type&BF_SKILLMASK))
 				continue; // one or more trigger conditions were not fulfilled
 
-			skill_id = (dstsd->autospell2[i].id > 0) ? dstsd->autospell2[i].id : -dstsd->autospell2[i].id;
-			skill_lv = dstsd->autospell2[i].lv?dstsd->autospell2[i].lv:1;
-			if (skill_lv < 0) skill_lv = 1+rnd()%(-skill_lv);
+			auto_skill_id = (dstsd->autospell2[i].id > 0) ? dstsd->autospell2[i].id : -dstsd->autospell2[i].id;
+			auto_skill_lv = dstsd->autospell2[i].lv?dstsd->autospell2[i].lv:1;
+			if (auto_skill_lv < 0) auto_skill_lv = 1+rnd()%(-auto_skill_lv);
 
 			rate = dstsd->autospell2[i].rate;
 			if (attack_type&BF_LONG)
 				 rate>>=1;
 
 			dstsd->state.autocast = 1;
-			notok = skill->not_ok(skill_id, dstsd);
+			notok = skill->not_ok(auto_skill_id, dstsd);
 			dstsd->state.autocast = 0;
 
 			if ( notok )
@@ -1808,26 +1810,26 @@ int skill_counter_additional_effect(struct block_list* src, struct block_list *b
 
 			tbl = (dstsd->autospell2[i].id < 0) ? bl : src;
 
-			if( (type = skill->get_casttype(skill_id)) == CAST_GROUND ) {
+			if( (type = skill->get_casttype(auto_skill_id)) == CAST_GROUND ) {
 				int maxcount = 0;
 				if( !(BL_PC&battle_config.skill_reiteration) &&
-					skill->get_unit_flag(skill_id)&UF_NOREITERATION &&
-					skill->check_unit_range(bl,tbl->x,tbl->y,skill_id,skill_lv)
+					skill->get_unit_flag(auto_skill_id)&UF_NOREITERATION &&
+					skill->check_unit_range(bl,tbl->x,tbl->y,auto_skill_id,auto_skill_lv)
 				  ) {
 					continue;
 				}
 				if( BL_PC&battle_config.skill_nofootset &&
-					skill->get_unit_flag(skill_id)&UF_NOFOOTSET &&
-					skill->check_unit_range2(bl,tbl->x,tbl->y,skill_id,skill_lv)
+					skill->get_unit_flag(auto_skill_id)&UF_NOFOOTSET &&
+					skill->check_unit_range2(bl,tbl->x,tbl->y,auto_skill_id,auto_skill_lv)
 				  ) {
 					continue;
 				}
 				if( BL_PC&battle_config.land_skill_limit &&
-					(maxcount = skill->get_maxcount(skill_id, skill_lv)) > 0
+					(maxcount = skill->get_maxcount(auto_skill_id, auto_skill_lv)) > 0
 				  ) {
 					int v;
 					for(v=0;v<MAX_SKILLUNITGROUP && dstsd->ud.skillunit[v] && maxcount;v++) {
-						if(dstsd->ud.skillunit[v]->skill_id == skill_id)
+						if(dstsd->ud.skillunit[v]->skill_id == auto_skill_id)
 							maxcount--;
 					}
 					if( maxcount == 0 ) {
@@ -1836,27 +1838,27 @@ int skill_counter_additional_effect(struct block_list* src, struct block_list *b
 				}
 			}
 
-			if( !battle->check_range(src, tbl, skill->get_range2(src, skill_id,skill_lv) + (skill_id == RG_CLOSECONFINE?0:1)) && battle_config.autospell_check_range )
+			if( !battle->check_range(src, tbl, skill->get_range2(src, auto_skill_id,auto_skill_lv) + (auto_skill_id == RG_CLOSECONFINE?0:1)) && battle_config.autospell_check_range )
 				continue;
 
 			dstsd->state.autocast = 1;
-			skill->consume_requirement(dstsd,skill_id,skill_lv,1);
+			skill->consume_requirement(dstsd,auto_skill_id,auto_skill_lv,1);
 			switch (type) {
 				case CAST_GROUND:
-					skill->castend_pos2(bl, tbl->x, tbl->y, skill_id, skill_lv, tick, 0);
+					skill->castend_pos2(bl, tbl->x, tbl->y, auto_skill_id, auto_skill_lv, tick, 0);
 					break;
 				case CAST_NODAMAGE:
-					skill->castend_nodamage_id(bl, tbl, skill_id, skill_lv, tick, 0);
+					skill->castend_nodamage_id(bl, tbl, auto_skill_id, auto_skill_lv, tick, 0);
 					break;
 				case CAST_DAMAGE:
-					skill->castend_damage_id(bl, tbl, skill_id, skill_lv, tick, 0);
+					skill->castend_damage_id(bl, tbl, auto_skill_id, auto_skill_lv, tick, 0);
 					break;
 			}
 			dstsd->state.autocast = 0;
 			//Set canact delay. [Skotlex]
 			ud = unit->bl2ud(bl);
 			if (ud) {
-				rate = skill->delay_fix(bl, skill_id, skill_lv);
+				rate = skill->delay_fix(bl, auto_skill_id, auto_skill_lv);
 				if (DIFF_TICK(ud->canact_tick, tick + rate) < 0){
 					ud->canact_tick = tick+rate;
 					if ( battle_config.display_status_timers && dstsd )
@@ -2276,7 +2278,7 @@ int skill_attack(int attack_type, struct block_list* src, struct block_list *dsr
 	}
 
 	if(sd) {
-		int flag = 0; //Used to signal if this skill can be combo'ed later on.
+		int combo = 0; //Used to signal if this skill can be combo'ed later on.
 		struct status_change_entry *sce;
 		if ((sce = sd->sc.data[SC_COMBOATTACK])) {//End combo state after skill is invoked. [Skotlex]
 			switch (skill_id) {
@@ -2302,23 +2304,23 @@ int skill_attack(int attack_type, struct block_list* src, struct block_list *dsr
 		switch(skill_id) {
 			case MO_TRIPLEATTACK:
 				if (pc->checkskill(sd, MO_CHAINCOMBO) > 0 || pc->checkskill(sd, SR_DRAGONCOMBO) > 0)
-					flag=1;
+					combo=1;
 				break;
 			case MO_CHAINCOMBO:
 				if(pc->checkskill(sd, MO_COMBOFINISH) > 0 && sd->spiritball > 0)
-					flag=1;
+					combo=1;
 				break;
 			case MO_COMBOFINISH:
 				if (sd->status.party_id>0) //bonus from SG_FRIEND [Komurka]
 					party->skill_check(sd, sd->status.party_id, MO_COMBOFINISH, skill_lv);
 				if (pc->checkskill(sd, CH_TIGERFIST) > 0 && sd->spiritball > 0)
-					flag=1;
+					combo=1;
 			case CH_TIGERFIST:
-				if (!flag && pc->checkskill(sd, CH_CHAINCRUSH) > 0 && sd->spiritball > 1)
-					flag=1;
+				if (!combo && pc->checkskill(sd, CH_CHAINCRUSH) > 0 && sd->spiritball > 1)
+					combo=1;
 			case CH_CHAINCRUSH:
-				if (!flag && pc->checkskill(sd, MO_EXTREMITYFIST) > 0 && sd->spiritball > 0 && sd->sc.data[SC_EXPLOSIONSPIRITS])
-					flag=1;
+				if (!combo && pc->checkskill(sd, MO_EXTREMITYFIST) > 0 && sd->spiritball > 0 && sd->sc.data[SC_EXPLOSIONSPIRITS])
+					combo=1;
 				break;
 			case AC_DOUBLE:
 				if( (tstatus->race == RC_BRUTE || tstatus->race == RC_INSECT) && pc->checkskill(sd, HT_POWER))
@@ -2346,21 +2348,21 @@ int skill_attack(int attack_type, struct block_list* src, struct block_list *dsr
 				break;
 			case TK_DODGE:
 				if( pc->checkskill(sd, TK_JUMPKICK) > 0 )
-					flag = 1;
+					combo = 1;
 				break;
 			case SR_DRAGONCOMBO:
 				if( pc->checkskill(sd, SR_FALLENEMPIRE) > 0 )
-					flag = 1;
+					combo = 1;
 				break;
 			case SR_FALLENEMPIRE:
 				if( pc->checkskill(sd, SR_TIGERCANNON) > 0 || pc->checkskill(sd, SR_GATEOFHELL) > 0 )
-					flag = 1;
+					combo = 1;
 				break;
 		}	//Switch End
-		if (flag) { //Possible to chain
-			if ( (flag = DIFF_TICK32(sd->ud.canact_tick, tick)) < 50 ) flag = 50;/* less is a waste. */
-			sc_start2(src,SC_COMBOATTACK,100,skill_id,bl->id,flag);
-			clif->combo_delay(src, flag);
+		if (combo) { //Possible to chain
+			if ( (combo = DIFF_TICK32(sd->ud.canact_tick, tick)) < 50 ) combo = 50;/* less is a waste. */
+			sc_start2(src,SC_COMBOATTACK,100,skill_id,bl->id,combo);
+			clif->combo_delay(src, combo);
 		}
 	}
 
@@ -4171,7 +4173,7 @@ int skill_castend_damage_id(struct block_list* src, struct block_list *bl, uint1
 				skill->toggle_magicpower(src, skill_id);
 				// Priority is to release SpellBook
 				if( sc && sc->data[SC_READING_SB] ) { // SpellBook
-					uint16 skill_id, skill_lv, point, s = 0;
+					uint16 spell_skill_id, spell_skill_lv, point, s = 0;
 					int spell[SC_SPELLBOOK7-SC_SPELLBOOK1 + 1];
 
 					for(i = SC_SPELLBOOK7; i >= SC_SPELLBOOK1; i--) // List all available spell to be released
@@ -4182,8 +4184,8 @@ int skill_castend_damage_id(struct block_list* src, struct block_list *bl, uint1
 
 					i = spell[s==1?0:rand()%s];// Random select of spell to be released.
 					if( s && sc->data[i] ){// Now extract the data from the preserved spell
-						skill_id = sc->data[i]->val1;
-						skill_lv = sc->data[i]->val2;
+						spell_skill_id = sc->data[i]->val1;
+						spell_skill_lv = sc->data[i]->val2;
 						point = sc->data[i]->val3;
 						status_change_end(src, (sc_type)i, INVALID_TIMER);
 					}else //something went wrong :(
@@ -4194,36 +4196,35 @@ int skill_castend_damage_id(struct block_list* src, struct block_list *bl, uint1
 					else // Last spell to be released
 						status_change_end(src, SC_READING_SB, INVALID_TIMER);
 
-					if( !skill->check_condition_castbegin(sd, skill_id, skill_lv) )
+					if( !skill->check_condition_castbegin(sd, spell_skill_id, spell_skill_lv) )
 						break;
 
-					switch( skill->get_casttype(skill_id) ) {
+					switch( skill->get_casttype(spell_skill_id) ) {
 						case CAST_GROUND:
-							skill->castend_pos2(src, bl->x, bl->y, skill_id, skill_lv, tick, 0);
+							skill->castend_pos2(src, bl->x, bl->y, spell_skill_id, spell_skill_lv, tick, 0);
 							break;
 						case CAST_NODAMAGE:
-							skill->castend_nodamage_id(src, bl, skill_id, skill_lv, tick, 0);
+							skill->castend_nodamage_id(src, bl, spell_skill_id, spell_skill_lv, tick, 0);
 							break;
 						case CAST_DAMAGE:
-							skill->castend_damage_id(src, bl, skill_id, skill_lv, tick, 0);
+							skill->castend_damage_id(src, bl, spell_skill_id, spell_skill_lv, tick, 0);
 							break;
 					}
 
-					sd->ud.canact_tick = tick + skill->delay_fix(src, skill_id, skill_lv);
-					clif->status_change(src, SI_POSTDELAY, 1, skill->delay_fix(src, skill_id, skill_lv), 0, 0, 0);
+					sd->ud.canact_tick = tick + skill->delay_fix(src, spell_skill_id, spell_skill_lv);
+					clif->status_change(src, SI_POSTDELAY, 1, skill->delay_fix(src, spell_skill_id, spell_skill_lv), 0, 0, 0);
 
-					cooldown = skill_get_cooldown(skill_id, skill_lv);
+					cooldown = skill_get_cooldown(spell_skill_id, spell_skill_lv);
 					for (i = 0; i < ARRAYLENGTH(sd->skillcooldown) && sd->skillcooldown[i].id; i++) {
-						if (sd->skillcooldown[i].id == skill_id){
+						if (sd->skillcooldown[i].id == spell_skill_id){
 							cooldown += sd->skillcooldown[i].val;
 							break;
 						}					
 					}
 					if(cooldown)
-						skill->blockpc_start(sd, skill_id, cooldown);
+						skill->blockpc_start(sd, spell_skill_id, cooldown);
 				}else if( sc ){ // Summon Balls
-					int i = SC_SUMMON5;
-					for(; i >= SC_SUMMON1; i--){
+					for(i = SC_SUMMON5; i >= SC_SUMMON1; i--){
 						if( sc->data[i] ){
 							int skillid = WL_SUMMON_ATK_FIRE + (sc->data[i]->val1 - WLS_FIRE);
 							skill->addtimerskill(src, tick + status_get_adelay(src) * (SC_SUMMON5 - i), bl->id, 0, 0, skillid, skill_lv, BF_MAGIC, flag);
@@ -4460,14 +4461,14 @@ int skill_castend_damage_id(struct block_list* src, struct block_list *bl, uint1
 		case EL_TIDAL_WEAPON:
 			if( src->type == BL_ELEM ) {
 				struct elemental_data *ele = BL_CAST(BL_ELEM,src);
-				struct status_change *sc = status->get_sc(&ele->bl);
+				struct status_change *esc = status->get_sc(&ele->bl);
 				struct status_change *tsc = status->get_sc(bl);
 				sc_type type = status->skill2sc(skill_id), type2;
 				type2 = type-1;
 
 				clif->skill_nodamage(src,battle->get_master(src),skill_id,skill_lv,1);
 				clif->skill_damage(src, src, tick, status_get_amotion(src), 0, -30000, 1, skill_id, skill_lv, 6);
-				if( (sc && sc->data[type2]) || (tsc && tsc->data[type]) ) {
+				if( (esc && esc->data[type2]) || (tsc && tsc->data[type]) ) {
 					elemental->clean_single_effect(ele, skill_id);
 				}
 				if( rnd()%100 < 50 )
@@ -4893,7 +4894,7 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 	struct status_change *tsc;
 	struct status_change_entry *tsce;
 
-	int i = 0;
+	int element = 0;
 	enum sc_type type;
 
 	if(skill_id > 0 && !skill_lv) return 0;	// celest
@@ -5008,9 +5009,9 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 	tsce = (tsc && type != -1)?tsc->data[type]:NULL;
 
 	if (src!=bl && type > -1 &&
-		(i = skill->get_ele(skill_id, skill_lv)) > ELE_NEUTRAL &&
+		(element = skill->get_ele(skill_id, skill_lv)) > ELE_NEUTRAL &&
 		skill->get_inf(skill_id) != INF_SUPPORT_SKILL &&
-		battle->attr_fix(NULL, NULL, 100, i, tstatus->def_ele, tstatus->ele_lv) <= 0)
+		battle->attr_fix(NULL, NULL, 100, element, tstatus->def_ele, tstatus->ele_lv) <= 0)
 		return 1; //Skills that cause an status should be blocked if the target element blocks its element.
 
 	map->freeblock_lock();
@@ -5175,13 +5176,13 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 
 		case SA_ABRACADABRA:
 			{
-				int abra_skill_id = 0, abra_skill_lv;
+				int abra_skill_id = 0, abra_skill_lv, abra_idx;
 				do {
-					i = rnd() % MAX_SKILL_ABRA_DB;
-					abra_skill_id = skill->abra_db[i].skill_id;
+					abra_idx = rnd() % MAX_SKILL_ABRA_DB;
+					abra_skill_id = skill->abra_db[abra_idx].skill_id;
 				} while (abra_skill_id == 0 ||
-					skill->abra_db[i].req_lv > skill_lv || //Required lv for it to appear
-					rnd()%10000 >= skill->abra_db[i].per
+					skill->abra_db[abra_idx].req_lv > skill_lv || //Required lv for it to appear
+					rnd()%10000 >= skill->abra_db[abra_idx].per
 				);
 				abra_skill_lv = min(skill_lv, skill->get_max(abra_skill_id));
 				clif->skill_nodamage (src, bl, skill_id, skill_lv, 1);
@@ -5279,6 +5280,7 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 				mob->class_change(dstmd,class_);
 				if( tsc && dstmd->status.mode&MD_BOSS )
 				{
+					int i;
 					const enum sc_type scs[] = { SC_QUAGMIRE, SC_PROVOKE, SC_ROKISWEIL, SC_GRAVITATION, SC_NJ_SUITON, SC_NOEQUIPWEAPON, SC_NOEQUIPSHIELD, SC_NOEQUIPARMOR, SC_NOEQUIPHELM, SC_BLADESTOP };
 					for (i = SC_COMMON_MIN; i <= SC_COMMON_MAX; i++)
 						if (tsc->data[i]) status_change_end(bl, (sc_type)i, INVALID_TIMER);
@@ -5308,6 +5310,7 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 		case SA_TAMINGMONSTER:
 			clif->skill_nodamage(src,bl,skill_id,skill_lv,1);
 			if (sd && dstmd) {
+				int i;
 				ARR_FIND( 0, MAX_PET_DB, i, dstmd->class_ == pet->db[i].class_ );
 				if( i < MAX_PET_DB )
 					pet->catch_process1(sd, dstmd->class_);
@@ -5582,9 +5585,11 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 			break;
 		case HLIF_AVOID:
 		case HAMI_DEFENCE:
-			i = skill->get_time(skill_id,skill_lv);
-			clif->skill_nodamage(bl,bl,skill_id,skill_lv,sc_start(bl,type,100,skill_lv,i)); // Master
-			clif->skill_nodamage(src,src,skill_id,skill_lv,sc_start(src,type,100,skill_lv,i)); // Homunc
+		{
+			int duration = skill->get_time(skill_id,skill_lv);
+			clif->skill_nodamage(bl,bl,skill_id,skill_lv,sc_start(bl,type,100,skill_lv,duration)); // Master
+			clif->skill_nodamage(src,src,skill_id,skill_lv,sc_start(src,type,100,skill_lv,duration)); // Homunc
+		}
 			break;
 		case NJ_BUNSINJYUTSU:
 			clif->skill_nodamage(src,bl,skill_id,skill_lv,
@@ -5681,14 +5686,16 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 		case SM_PROVOKE:
 		case SM_SELFPROVOKE:
 		case MER_PROVOKE:
+		{
+			int failure;
 			if( (tstatus->mode&MD_BOSS) || battle->check_undead(tstatus->race,tstatus->def_ele) ) {
 				map->freeblock_unlock();
 				return 1;
 			}
 			//TODO: How much does base level affects? Dummy value of 1% per level difference used. [Skotlex]
 			clif->skill_nodamage(src,bl,skill_id == SM_SELFPROVOKE ? SM_PROVOKE : skill_id,skill_lv,
-				(i = sc_start(bl,type, skill_id == SM_SELFPROVOKE ? 100:( 50 + 3*skill_lv + status->get_lv(src) - status->get_lv(bl)), skill_lv, skill->get_time(skill_id,skill_lv))));
-			if( !i ) {
+				(failure = sc_start(bl,type, skill_id == SM_SELFPROVOKE ? 100:( 50 + 3*skill_lv + status->get_lv(src) - status->get_lv(bl)), skill_lv, skill->get_time(skill_id,skill_lv))));
+			if( !failure ) {
 				if( sd )
 					clif->skill_fail(sd,skill_id,USESKILL_FAIL_LEVEL,0);
 				map->freeblock_unlock();
@@ -5710,12 +5717,13 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 				dstmd->state.provoke_flag = src->id;
 				mob->target(dstmd, src, skill->get_range2(src,skill_id,skill_lv));
 			}
+		}
 			break;
 
 		case ML_DEVOTION:
 		case CR_DEVOTION:
 			{
-				int count, lv;
+				int count, lv, i;
 				if( !dstsd || (!sd && !mer) )
 				{ // Only players can be devoted
 					if( sd )
@@ -5776,7 +5784,7 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 
 		case CH_SOULCOLLECT:
 			if(sd) {
-				int limit = 5;
+				int limit = 5, i;
 				if( sd->sc.data[SC_RAISINGDRAGON] )
 					limit += sd->sc.data[SC_RAISINGDRAGON]->val1;
 				clif->skill_nodamage(src,bl,skill_id,skill_lv,1);
@@ -5800,18 +5808,20 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 			break;
 
 		case MO_ABSORBSPIRITS:
-			i = 0;
+		{
+			int sp = 0;
 			if (dstsd && dstsd->spiritball && (sd == dstsd || map_flag_vs(src->m)) && ((dstsd->class_&MAPID_BASEMASK)!=MAPID_GUNSLINGER || (dstsd->class_&MAPID_UPPERMASK)!=MAPID_REBELLION))
 			{	// split the if for readability, and included gunslingers in the check so that their coins cannot be removed [Reddozen]
-				i = dstsd->spiritball * 7;
+				sp = dstsd->spiritball * 7;
 				pc->delspiritball(dstsd,dstsd->spiritball,0);
 			} else if (dstmd && !(tstatus->mode&MD_BOSS) && rnd() % 100 < 20)
 			{	// check if target is a monster and not a Boss, for the 20% chance to absorb 2 SP per monster's level [Reddozen]
-				i = 2 * dstmd->level;
+				sp = 2 * dstmd->level;
 				mob->target(dstmd,src,0);
 			}
-			if (i) status->heal(src, 0, i, 3);
-			clif->skill_nodamage(src,bl,skill_id,skill_lv,i?1:0);
+			if (sp) status->heal(src, 0, sp, 3);
+			clif->skill_nodamage(src,bl,skill_id,skill_lv,sp?1:0);
+		}
 			break;
 
 		case AC_MAKINGARROW:
@@ -5858,12 +5868,15 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 		case SR_RAMPAGEBLASTER:
 		case SR_HOWLINGOFLION:
 		case KO_HAPPOKUNAI:
+		{
+			int count = 0;
 			skill->area_temp[1] = 0;
 			clif->skill_nodamage(src,bl,skill_id,skill_lv,1);
-			i = map->foreachinrange(skill->area_sub, bl, skill->get_splash(skill_id, skill_lv), splash_target(src),
+			count = map->foreachinrange(skill->area_sub, bl, skill->get_splash(skill_id, skill_lv), splash_target(src),
 			                        src, skill_id, skill_lv, tick, flag|BCT_ENEMY|SD_SPLASH|1, skill->castend_damage_id);
-			if( !i && ( skill_id == NC_AXETORNADO || skill_id == SR_SKYNETBLOW || skill_id == KO_HAPPOKUNAI ) )
+			if( !count && ( skill_id == NC_AXETORNADO || skill_id == SR_SKYNETBLOW || skill_id == KO_HAPPOKUNAI ) )
 				clif->skill_damage(src,src,tick, status_get_amotion(src), 0, -30000, 1, skill_id, skill_lv, 6);
+		}
 			break;
 
 		case NC_EMERGENCYCOOL:
@@ -5911,18 +5924,20 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 
 		case HVAN_EXPLOSION:	//[orn]
 		case NPC_SELFDESTRUCTION:
+		{
 			//Self Destruction hits everyone in range (allies+enemies)
 			//Except for Summoned Marine spheres on non-versus maps, where it's just enemy.
-			i = ((!md || md->special_state.ai == 2) && !map_flag_vs(src->m))?
+			int targetmask = ((!md || md->special_state.ai == 2) && !map_flag_vs(src->m))?
 				BCT_ENEMY:BCT_ALL;
 			clif->skill_nodamage(src, src, skill_id, -1, 1);
 			map->delblock(src); //Required to prevent chain-self-destructions hitting back.
 			map->foreachinrange(skill->area_sub, bl,
 			                    skill->get_splash(skill_id, skill_lv), splash_target(src),
-			                    src, skill_id, skill_lv, tick, flag|i,
+			                    src, skill_id, skill_lv, tick, flag|targetmask,
 			                    skill->castend_damage_id);
 			map->addblock(src);
 			status->damage(src, src, sstatus->max_hp,0,0,1);
+		}
 			break;
 
 		case AL_ANGELUS:
@@ -6009,11 +6024,14 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 			break;
 		case SM_AUTOBERSERK:
 		case MER_AUTOBERSERK:
+		{
+			int failure;
 			if( tsce )
-				i = status_change_end(bl, type, INVALID_TIMER);
+				failure = status_change_end(bl, type, INVALID_TIMER);
 			else
-				i = sc_start(bl,type,100,skill_lv,60000);
-			clif->skill_nodamage(src,bl,skill_id,skill_lv,i);
+				failure = sc_start(bl,type,100,skill_lv,60000);
+			clif->skill_nodamage(src,bl,skill_id,skill_lv,failure);
+		}
 			break;
 		case TF_HIDING:
 		case ST_CHASEWALK:
@@ -6046,20 +6064,22 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 		case SC_REPRODUCE:
 		case SC_INVISIBILITY:
 			if (tsce) {
-				i = status_change_end(bl, type, INVALID_TIMER);
-				if( i )
-					clif->skill_nodamage(src,bl,skill_id,( skill_id == LG_FORCEOFVANGUARD ) ? skill_lv : -1,i);
+				int failure = status_change_end(bl, type, INVALID_TIMER);
+				if( failure )
+					clif->skill_nodamage(src,bl,skill_id,( skill_id == LG_FORCEOFVANGUARD ) ? skill_lv : -1,failure);
 				else if( sd )
 					clif->skill_fail(sd,skill_id,USESKILL_FAIL_LEVEL,0);
 				map->freeblock_unlock();
 				return 0;
 			}
 		case RA_CAMOUFLAGE:
-			i = sc_start(bl,type,100,skill_lv,skill->get_time(skill_id,skill_lv));
-			if( i )
-				clif->skill_nodamage(src,bl,skill_id,( skill_id == LG_FORCEOFVANGUARD ) ? skill_lv : -1,i);
+		{
+			int failure = sc_start(bl,type,100,skill_lv,skill->get_time(skill_id,skill_lv));
+			if( failure )
+				clif->skill_nodamage(src,bl,skill_id,( skill_id == LG_FORCEOFVANGUARD ) ? skill_lv : -1,failure);
 			else if( sd )
 				clif->skill_fail(sd,skill_id,USESKILL_FAIL_LEVEL,0);
+		}
 			break;
 
 		case BD_ADAPTATION:
@@ -6376,18 +6396,18 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 		case GC_WEAPONCRUSH:
 		case SC_STRIPACCESSARY: {
 			unsigned short location = 0;
-			int d = 0;
+			int d = 0, rate;
 
 			//Rate in percent
 			if ( skill_id == ST_FULLSTRIP ) {
-				i = 5 + 2*skill_lv + (sstatus->dex - tstatus->dex)/5;
+				rate = 5 + 2*skill_lv + (sstatus->dex - tstatus->dex)/5;
 			} else if( skill_id == SC_STRIPACCESSARY ) {
-				i = 12 + 2 * skill_lv + (sstatus->dex - tstatus->dex)/5;
+				rate = 12 + 2 * skill_lv + (sstatus->dex - tstatus->dex)/5;
 			} else {
-				i = 5 + 5*skill_lv + (sstatus->dex - tstatus->dex)/5;
+				rate = 5 + 5*skill_lv + (sstatus->dex - tstatus->dex)/5;
 			}
 
-			if (i < 5) i = 5; //Minimum rate 5%
+			if (rate < 5) rate = 5; //Minimum rate 5%
 
 			//Duration in ms
 			if( skill_id == GC_WEAPONCRUSH){
@@ -6431,11 +6451,11 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 			}
 
 			//Attempts to strip at rate i and duration d
-			if( (i = skill->strip_equip(bl, location, i, skill_lv, d)) || (skill_id != ST_FULLSTRIP && skill_id != GC_WEAPONCRUSH ) )
-				clif->skill_nodamage(src,bl,skill_id,skill_lv,i);
+			if( (rate = skill->strip_equip(bl, location, rate, skill_lv, d)) || (skill_id != ST_FULLSTRIP && skill_id != GC_WEAPONCRUSH ) )
+				clif->skill_nodamage(src,bl,skill_id,skill_lv,rate);
 
 			//Nothing stripped.
-			if( sd && !i )
+			if( sd && !rate )
 				clif->skill_fail(sd,skill_id,USESKILL_FAIL_LEVEL,0);
 			break;
 		}
@@ -6601,8 +6621,10 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 			}
 			break;
 		case SA_DISPELL:
-			if (flag&1 || (i = skill->get_splash(skill_id, skill_lv)) < 1)
-			{	
+		{
+			int splash;
+			if (flag&1 || (splash = skill->get_splash(skill_id, skill_lv)) < 1) {
+				int i;
 				if( sd && dstsd && !map_flag_vs(sd->bl.m)
 					&& (sd->status.party_id == 0 || sd->status.party_id != dstsd->status.party_id) ) {
 					// Outside PvP it should only affect party members and no skill fail message.
@@ -6653,11 +6675,13 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 					status_change_end(bl, (sc_type)i, INVALID_TIMER);
 				}
 				break;
+			} else {
+				//Affect all targets on splash area.
+				map->foreachinrange(skill->area_sub, bl, splash, BL_CHAR,
+				                    src, skill_id, skill_lv, tick, flag|1,
+				                    skill->castend_damage_id);
 			}
-			//Affect all targets on splash area.
-			map->foreachinrange(skill->area_sub, bl, i, BL_CHAR,
-			                    src, skill_id, skill_lv, tick, flag|1,
-			                    skill->castend_damage_id);
+		}
 			break;
 
 		case TF_BACKSLIDING: //This is the correct implementation as per packet logging information. [Skotlex]
@@ -7049,16 +7073,17 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 					if( sd && !(sg->unit_id == UNT_USED_TRAPS || (sg->unit_id == UNT_ANKLESNARE && sg->val2 != 0 )) ) {
 						// prevent picking up expired traps
 						if( battle_config.skill_removetrap_type ) {
+							int i;
 							// get back all items used to deploy the trap
 							for( i = 0; i < 10; i++ ) {
 								if( skill->db[su->group->skill_id].itemid[i] > 0 ) {
-									int flag;
+									int success;
 									struct item item_tmp;
 									memset(&item_tmp,0,sizeof(item_tmp));
 									item_tmp.nameid = skill->db[su->group->skill_id].itemid[i];
 									item_tmp.identify = 1;
-									if( item_tmp.nameid && (flag=pc->additem(sd,&item_tmp,skill->db[su->group->skill_id].amount[i],LOG_TYPE_OTHER)) ) {
-										clif->additem(sd,0,0,flag);
+									if( item_tmp.nameid && (success=pc->additem(sd,&item_tmp,skill->db[su->group->skill_id].amount[i],LOG_TYPE_OTHER)) ) {
+										clif->additem(sd,0,0,success);
 										map->addflooritem(&item_tmp,skill->db[su->group->skill_id].amount[i],sd->bl.m,sd->bl.x,sd->bl.y,0,0,0,0);
 									}
 								}
@@ -7479,7 +7504,7 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 			{
 				int dx[9]={-1, 1, 0, 0,-1, 1,-1, 1, 0};
 				int dy[9]={ 0, 0, 1,-1, 1,-1,-1, 1, 0};
-				int j = 0;
+				int i, j = 0;
 				struct guild *g;
 				// i don't know if it actually summons in a circle, but oh well. ;P
 				g = sd ? sd->guild : guild->search(status->get_guild_id(src));
@@ -7533,10 +7558,10 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 			/* per official standards, this skill works on players and mobs. */
 			if (sd && (dstsd || dstmd))
 			{
-				i =65 -5*distance_bl(src,bl); //Base rate
-				if (i < 30) i = 30;
+				int rate = 65 -5*distance_bl(src,bl); //Base rate
+				if (rate < 30) rate = 30;
 				clif->skill_nodamage(src,bl,skill_id,skill_lv,1);
-				sc_start(bl,SC_STUN, i,skill_lv,skill->get_time2(skill_id,skill_lv));
+				sc_start(bl,SC_STUN, rate,skill_lv,skill->get_time2(skill_id,skill_lv));
 			}
 			break;
 
@@ -7591,20 +7616,21 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 			{
 				static const int per[5][2]={{20,50},{50,60},{25,75},{60,64},{34,67}};
 				int r = rnd()%100;
-				i = (skill_lv-1)%5;
-				if(r<per[i][0]) //Self
+				int target = (skill_lv-1)%5;
+				int hp;
+				if(r<per[target][0]) //Self
 					bl = src;
-				else if(r<per[i][1]) //Master
+				else if(r<per[target][1]) //Master
 					bl = battle->get_master(src);
 				else //Enemy
 					bl = map->id2bl(battle->get_target(src));
 
 				if (!bl) bl = src;
-				i = skill->calc_heal(src, bl, skill_id, 1+rnd()%skill_lv, true);
+				hp = skill->calc_heal(src, bl, skill_id, 1+rnd()%skill_lv, true);
 				//Eh? why double skill packet?
-				clif->skill_nodamage(src,bl,AL_HEAL,i,1);
-				clif->skill_nodamage(src,bl,skill_id,i,1);
-				status->heal(bl, i, 0, 0);
+				clif->skill_nodamage(src,bl,AL_HEAL,hp,1);
+				clif->skill_nodamage(src,bl,skill_id,hp,1);
+				status->heal(bl, hp, 0, 0);
 			}
 			break;
 		//Homun single-target support skills [orn]
@@ -7623,7 +7649,7 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 		case NPC_DRAGONFEAR:
 			if (flag&1) {
 				const enum sc_type sc[] = { SC_STUN, SC_SILENCE, SC_CONFUSION, SC_BLOODING };
-				int j;
+				int i, j;
 				j = i = rnd()%ARRAYLENGTH(sc);
 				while ( !sc_start2(bl,sc[i],100,skill_lv,src->id,skill->get_time2(skill_id,i+1)) ) {
 					i++;
@@ -7725,14 +7751,17 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 			break;
 		case RK_IGNITIONBREAK:
 		case LG_EARTHDRIVE:
+			{
+				int splash;
 				clif->skill_damage(src,bl,tick, status_get_amotion(src), 0, -30000, 1, skill_id, skill_lv, 6);
-				i = skill->get_splash(skill_id,skill_lv);
+				splash = skill->get_splash(skill_id,skill_lv);
 				if( skill_id == LG_EARTHDRIVE ) {
 					int dummy = 1;
-					map->foreachinarea(skill->cell_overlap, src->m, src->x-i, src->y-i, src->x+i, src->y+i, BL_SKILL, LG_EARTHDRIVE, &dummy, src);
+					map->foreachinarea(skill->cell_overlap, src->m, src->x-splash, src->y-splash, src->x+splash, src->y+splash, BL_SKILL, LG_EARTHDRIVE, &dummy, src);
 				}
-				map->foreachinrange(skill->area_sub, bl,i,BL_CHAR,
+				map->foreachinrange(skill->area_sub, bl,splash,BL_CHAR,
 				                    src,skill_id,skill_lv,tick,flag|BCT_ENEMY|1,skill->castend_damage_id);
+			}
 			break;
 		case RK_STONEHARDSKIN:
 			if( sd ) {
@@ -7770,8 +7799,8 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 					sc_start(bl,type,100,skill->area_temp[5]/4,skill->get_time(skill_id,skill_lv));
 			} else if( sd ) {
 				if( sd->status.party_id ) {
-					i = party->foreachsamemap(skill->area_sub,sd,skill->get_splash(skill_id,skill_lv),src,skill_id,skill_lv,tick,BCT_PARTY,skill->area_sub_count);
-					skill->area_temp[5] = 7 * i; // ATK
+					int members = party->foreachsamemap(skill->area_sub,sd,skill->get_splash(skill_id,skill_lv),src,skill_id,skill_lv,tick,BCT_PARTY,skill->area_sub_count);
+					skill->area_temp[5] = 7 * members; // ATK
 					party->foreachsamemap(skill->area_sub,sd,skill->get_splash(skill_id,skill_lv),src,skill_id,skill_lv,tick,flag|BCT_PARTY|1,skill->castend_nodamage_id);
 				} else
 					sc_start2(bl,type,100,7,5,skill->get_time(skill_id,skill_lv));
@@ -7784,28 +7813,28 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 				if( src == bl )
 					break;
 				while( skill->area_temp[5] >= 0x10 ){
+					int value = 0;
 					type = SC_NONE;
-					i = 0;
 					if( skill->area_temp[5]&0x10 ){
 						if( dstsd ){
-							i = (rnd()%100<50) ? 4 : ((rnd()%100<80) ? 3 : 2);
-							clif->millenniumshield(dstsd,i);
+							value = (rnd()%100<50) ? 4 : ((rnd()%100<80) ? 3 : 2);
+							clif->millenniumshield(dstsd,value);
 							skill->area_temp[5] &= ~0x10;
 							type = SC_MILLENNIUMSHIELD;
 						}
 					}else if( skill->area_temp[5]&0x20 ){
-						i = status_get_max_hp(bl) * 25 / 100;
+						value = status_get_max_hp(bl) * 25 / 100;
 						status->change_clear_buffs(bl,4);
 						skill->area_temp[5] &= ~0x20;
-						status->heal(bl,i,0,1);
+						status->heal(bl,value,0,1);
 						type = SC_REFRESH;
 					}else if( skill->area_temp[5]&0x40 ){
 						skill->area_temp[5] &= ~0x40;
 						type = SC_GIANTGROWTH;
 					}else if( skill->area_temp[5]&0x80 ){
 						if( dstsd ){
-							i = sstatus->hp / 4;
-							if( status->charge(bl,i,0) )
+							value = sstatus->hp / 4;
+							if( status->charge(bl,value,0) )
 								type = SC_STONEHARDSKIN;
 							skill->area_temp[5] &= ~0x80;
 						}
@@ -7818,7 +7847,7 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 					}
 					if( type > SC_NONE )
 						clif->skill_nodamage(bl, bl, skill_id, skill_lv,
-							sc_start4(bl, type, 100, skill_lv, i, 0, 1, skill->get_time(skill_id, skill_lv)));
+							sc_start4(bl, type, 100, skill_lv, value, 0, 1, skill->get_time(skill_id, skill_lv)));
 				}
 			}else if( sd ){
 				if( tsc && tsc->count ){
@@ -7930,16 +7959,19 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 
 		case AB_CLEMENTIA:
 		case AB_CANTO:
+		{
+			int level = 0;
 			if( sd )
-				i = skill_id == AB_CLEMENTIA ? pc->checkskill(sd,AL_BLESSING) : pc->checkskill(sd,AL_INCAGI);
+				level = skill_id == AB_CLEMENTIA ? pc->checkskill(sd,AL_BLESSING) : pc->checkskill(sd,AL_INCAGI);
 			if( sd == NULL || sd->status.party_id == 0 || flag&1 )
-				clif->skill_nodamage(bl, bl, skill_id, skill_lv, sc_start(bl, type, 100, i + (sd?(sd->status.job_level / 10):0), skill->get_time(skill_id,skill_lv)));
+				clif->skill_nodamage(bl, bl, skill_id, skill_lv, sc_start(bl, type, 100, level + (sd?(sd->status.job_level / 10):0), skill->get_time(skill_id,skill_lv)));
 			else if( sd ) {
-				if( !i )
+				if( !level )
 					clif->skill_fail(sd,skill_id,USESKILL_FAIL,0);
 				else
 					party->foreachsamemap(skill->area_sub, sd, skill->get_splash(skill_id, skill_lv), src, skill_id, skill_lv, tick, flag|BCT_PARTY|1, skill->castend_nodamage_id);
 			}
+		}
 			break;
 
 		case AB_PRAEFATIO:
@@ -7952,15 +7984,15 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 		case AB_CHEAL:
 			if( sd == NULL || sd->status.party_id == 0 || flag&1 ) {
 				if( sd && tstatus && !battle->check_undead(tstatus->race, tstatus->def_ele) ) {
-					i = skill->calc_heal(src, bl, AL_HEAL, pc->checkskill(sd, AL_HEAL), true);
+					int heal = skill->calc_heal(src, bl, AL_HEAL, pc->checkskill(sd, AL_HEAL), true);
 
 					if( (dstsd && pc_ismadogear(dstsd)) || status->isimmune(bl))
-							i = 0; // Should heal by 0 or won't do anything?? in iRO it breaks the healing to members.. [malufett]
+							heal = 0; // Should heal by 0 or won't do anything?? in iRO it breaks the healing to members.. [malufett]
 
-					clif->skill_nodamage(bl, bl, skill_id, i, 1);
-					if( tsc && tsc->data[SC_AKAITSUKI] && i )
-						i = ~i + 1;
-					status->heal(bl, i, 0, 0);
+					clif->skill_nodamage(bl, bl, skill_id, heal, 1);
+					if( tsc && tsc->data[SC_AKAITSUKI] && heal )
+						heal = ~heal + 1;
+					status->heal(bl, heal, 0, 0);
 				}
 			}
 			else if( sd )
@@ -8015,7 +8047,10 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 			break;
 
 		case AB_CLEARANCE:
-			if( flag&1 || (i = skill->get_splash(skill_id, skill_lv)) < 1 ) {
+		{
+			int splash;
+			if( flag&1 || (splash = skill->get_splash(skill_id, skill_lv)) < 1 ) {
+				int i;
 				//As of the behavior in official server Clearance is just a super version of Dispell skill. [Jobbie]
 				if( bl->type != BL_MOB && battle->check_target(src,bl,BCT_PARTY) <= 0 ) // Only affect mob or party.
 					break;
@@ -8048,8 +8083,10 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 					status_change_end(bl,(sc_type)i,INVALID_TIMER);
 				}
 				break;
+			} else {
+				map->foreachinrange(skill->area_sub, bl, splash, BL_CHAR, src, skill_id, skill_lv, tick, flag|1, skill->castend_damage_id);
 			}
-			map->foreachinrange(skill->area_sub, bl, i, BL_CHAR, src, skill_id, skill_lv, tick, flag|1, skill->castend_damage_id);
+		}
 			break;
 
 		case AB_SILENTIUM:
@@ -8080,9 +8117,9 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 				else rate += 40 + 10 * skill_lv; // On Monsters, (40 + 10 * Skill Level) %
 
 				if( !(tsc && tsc->data[type]) ){
-					i = sc_start2(bl,type,rate,skill_lv,src->id,(src == bl)?5000:(bl->type == BL_PC)?skill->get_time(skill_id,skill_lv):skill->get_time2(skill_id, skill_lv)); 
-					clif->skill_nodamage(src,bl,skill_id,skill_lv,i); 
-					if( sd && !i )
+					int failure = sc_start2(bl,type,rate,skill_lv,src->id,(src == bl)?5000:(bl->type == BL_PC)?skill->get_time(skill_id,skill_lv):skill->get_time2(skill_id, skill_lv));
+					clif->skill_nodamage(src,bl,skill_id,skill_lv,failure);
+					if( sd && !failure )
 						clif->skill_fail(sd,skill_id,USESKILL_FAIL_LEVEL,0);
 				}
 			}else
@@ -8127,6 +8164,8 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 		case WL_SUMMONBL:
 		case WL_SUMMONWB:
 		case WL_SUMMONSTONE:
+		{
+			int i;
 			for( i = SC_SUMMON1; i <= SC_SUMMON5; i++ ){
 				if( tsc && !tsc->data[i] ){ // officially it doesn't work like a stack
 					int ele = WLS_FIRE + (skill_id - WL_SUMMONFB) - (skill_id == WL_SUMMONSTONE ? 4 : 0);
@@ -8135,11 +8174,13 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 					break;
 				}
 			}
+		}
 			break;
 
 		case WL_READING_SB:
 			if( sd ) {
 				struct status_change *sc = status->get_sc(bl);
+				int i;
 
 				for( i = SC_SPELLBOOK1; i <= SC_SPELLBOOK7; i++)
 					if( sc && !sc->data[i] )
@@ -8233,13 +8274,16 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 			break;
 
 		case NC_MAGNETICFIELD:
-			if( (i = sc_start2(bl,type,100,skill_lv,src->id,skill->get_time(skill_id,skill_lv))) )
+		{
+			int failure;
+			if( (failure = sc_start2(bl,type,100,skill_lv,src->id,skill->get_time(skill_id,skill_lv))) )
 			{
 				map->foreachinrange(skill->area_sub,src,skill->get_splash(skill_id,skill_lv),splash_target(src),src,skill_id,skill_lv,tick,flag|BCT_ENEMY|SD_SPLASH|1,skill->castend_damage_id);;
 				clif->skill_damage(src,src,tick,status_get_amotion(src),0,-30000,1,skill_id,skill_lv,6);
 				if (sd) pc->overheat(sd,1);
 			}
-			clif->skill_nodamage(src,src,skill_id,skill_lv,i);
+			clif->skill_nodamage(src,src,skill_id,skill_lv,failure);
+		}
 			break;
 
 		case NC_REPAIR:
@@ -8480,6 +8524,7 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 			break;
 		case LG_KINGS_GRACE:
 			if( flag&1 ){
+				int i;
 				sc_start(bl,type,100,skill_lv,skill->get_time(skill_id,skill_lv));
 				for(i=0; i<SC_MAX; i++)
 				{
@@ -8541,6 +8586,7 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 		case SR_RAISINGDRAGON:
 			if( sd ) {
 				short max = 5 + skill_lv;
+				int i;
 				sc_start(bl, SC_EXPLOSIONSPIRITS, 100, skill_lv, skill->get_time(skill_id, skill_lv));
 				for( i = 0; i < max; i++ ) // Don't call more than max available spheres.
 					pc->addspiritball(sd, skill->get_time(skill_id, skill_lv), max);
@@ -8550,14 +8596,14 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 
 		case SR_ASSIMILATEPOWER:
 			if( flag&1 ) {
-				i = 0;
+				int sp = 0;
 				if( dstsd && dstsd->spiritball && (sd == dstsd || map_flag_vs(src->m)) && (dstsd->class_&MAPID_BASEMASK)!=MAPID_GUNSLINGER )
 				{
-					i = dstsd->spiritball; //1%sp per spiritball.
+					sp = dstsd->spiritball; //1%sp per spiritball.
 					pc->delspiritball(dstsd, dstsd->spiritball, 0);
 				}
-				if( i ) status_percent_heal(src, 0, i);
-				clif->skill_nodamage(src, bl, skill_id, skill_lv, i ? 1:0);
+				if( sp ) status_percent_heal(src, 0, sp);
+				clif->skill_nodamage(src, bl, skill_id, skill_lv, sp ? 1:0);
 			} else {
 				clif->skill_damage(src,bl,tick, status_get_amotion(src), 0, -30000, 1, skill_id, skill_lv, 6);
 				map->foreachinrange(skill->area_sub, bl, skill->get_splash(skill_id, skill_lv), splash_target(src), src, skill_id, skill_lv, tick, flag|BCT_ENEMY|BCT_SELF|SD_SPLASH|1, skill->castend_nodamage_id);
@@ -8568,6 +8614,7 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 			if( !dstsd )
 				break;
 			if( sd && dstsd->spiritball <= 5 ) {
+				int i;
 				for(i = 0; i <= 5; i++) {
 					pc->addspiritball(dstsd, skill->get_time(MO_CALLSPIRITS, pc->checkskill(sd,MO_CALLSPIRITS)), i);
 					pc->delspiritball(sd, sd->spiritball, 0);
@@ -8609,9 +8656,12 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 				sc_start2(bl,type,100,skill_lv,src->id,skill->get_time(skill_id,skill_lv)));
 			break;
 		case SR_FLASHCOMBO:
+		{
+			int i;
 			clif->skill_nodamage(src,bl,skill_id,skill_lv,1);
 			for(i = SR_FLASHCOMBO_ATK_STEP1; i <= SR_FLASHCOMBO_ATK_STEP4; i++)
 				skill->addtimerskill(src, tick + 500 * (i - SR_FLASHCOMBO_ATK_STEP1), bl->id, 0, 0, i, skill_lv, BF_WEAPON, flag|SD_LEVEL);
+		}
 			break;
 		case WA_SWING_DANCE:
 		case WA_MOONLIT_SERENADE:
@@ -8742,11 +8792,11 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 			break;
 
 		case WM_RANDOMIZESPELL: {
-				int improv_skill_id = 0, improv_skill_lv;
+				int improv_skill_id = 0, improv_skill_lv, improv_idx;
 				do {
-					i = rnd() % MAX_SKILL_IMPROVISE_DB;
-					improv_skill_id = skill->improvise_db[i].skill_id;
-				} while( improv_skill_id == 0 || rnd()%10000 >= skill->improvise_db[i].per );
+					improv_idx = rnd() % MAX_SKILL_IMPROVISE_DB;
+					improv_skill_id = skill->improvise_db[improv_idx].skill_id;
+				} while( improv_skill_id == 0 || rnd()%10000 >= skill->improvise_db[improv_idx].per );
 				improv_skill_lv = 4 + skill_lv;
 				clif->skill_nodamage (src, bl, skill_id, skill_lv, 1);
 
@@ -8983,10 +9033,10 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 		case GN_SLINGITEM:
 			if( sd ) {
 				short ammo_id;
-				i = sd->equip_index[EQI_AMMO];
-				if( i <= 0 )
+				int equip_idx = sd->equip_index[EQI_AMMO];
+				if( equip_idx <= 0 )
 					break; // No ammo.
-				ammo_id = sd->inventory_data[i]->nameid;
+				ammo_id = sd->inventory_data[equip_idx]->nameid;
 				if( ammo_id <= 0 )
 					break;
 				sd->itemid = ammo_id;
@@ -8999,7 +9049,7 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 					} else //Otherwise, it fails, shows animation and removes items.
 						clif->skill_fail(sd,GN_SLINGITEM_RANGEMELEEATK,0xa,0);
 				} else if( itemdb_is_GNthrowable(ammo_id) ) {
-					struct script_code *scriptroot = sd->inventory_data[i]->script;
+					struct script_code *scriptroot = sd->inventory_data[equip_idx]->script;
 					if( !scriptroot )
 						break;
 					if( dstsd )
@@ -9098,6 +9148,7 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 		case KO_KAZEHU_SEIRAN:
 		case KO_DOHU_KOUKAI:
 			if(sd) {
+				int i;
 				int ttype = skill->get_ele(skill_id, skill_lv);
 				clif->skill_nodamage(src, bl, skill_id, skill_lv, 1);
 				ARR_FIND(1, 6, i, sd->charm[i] > 0 && ttype != i);
@@ -9109,16 +9160,16 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 
 		case KO_ZANZOU:
 			if(sd) {
-				struct mob_data *md;
-
-				md = mob->once_spawn_sub(src, src->m, src->x, src->y, status->get_name(src), 2308, "", SZ_MEDIUM, AI_NONE);
-				if( md ) {
-					md->master_id = src->id;
-					md->special_state.ai = AI_ZANZOU;
-					if( md->deletetimer != INVALID_TIMER )
-						timer->delete(md->deletetimer, mob->timer_delete);
-					md->deletetimer = timer->add(timer->gettick() + skill->get_time(skill_id, skill_lv), mob->timer_delete, md->bl.id, 0);
-					mob->spawn( md );
+				struct mob_data *summon_md;
+
+				summon_md = mob->once_spawn_sub(src, src->m, src->x, src->y, status->get_name(src), 2308, "", SZ_MEDIUM, AI_NONE);
+				if( summon_md ) {
+					summon_md->master_id = src->id;
+					summon_md->special_state.ai = AI_ZANZOU;
+					if( summon_md->deletetimer != INVALID_TIMER )
+						timer->delete(summon_md->deletetimer, mob->timer_delete);
+					summon_md->deletetimer = timer->add(timer->gettick() + skill->get_time(skill_id, skill_lv), mob->timer_delete, summon_md->bl.id, 0);
+					mob->spawn( summon_md );
 					pc->setinvincibletimer(sd,500);// unlock target lock
 					clif->skill_nodamage(src,bl,skill_id,skill_lv,1);
 					skill->blown(src,bl,skill->get_blewcount(skill_id,skill_lv),unit->getdir(bl),0);
@@ -9227,6 +9278,7 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 			};
 			int heal;
 			if(tsc){
+				int i;
 				for (i = 0; i < ARRAYLENGTH(scs); i++) {
 					if (tsc->data[scs[i]]) status_change_end(bl, scs[i], INVALID_TIMER);
 				}
@@ -9294,22 +9346,22 @@ int skill_castend_nodamage_id(struct block_list *src, struct block_list *bl, uin
 		{
 			int summons[5] = {1004, 1303, 1303, 1994, 1994};
 			int qty[5] =     {3   , 3   , 4   , 4   , 5};
-			struct mob_data *md;
+			struct mob_data *summon_md;
 			int i, dummy = 0;
 
-			i = map->foreachinmap(skill->check_condition_mob_master_sub ,hd->bl.m, BL_MOB, hd->bl.id, summons[skill_lv-1], skill_id, &dummy);
+			i = map->foreachinmap(skill->check_condition_mob_master_sub, src->m, BL_MOB, src->id, summons[skill_lv-1], skill_id, &dummy);
 			if(i >= qty[skill_lv-1])
 				break;
 
 			for(i=0; i<qty[skill_lv - 1]; i++){ //easy way
-				md = mob->once_spawn_sub(src, src->m, src->x, src->y, status->get_name(src), summons[skill_lv - 1], "", SZ_MEDIUM, AI_ATTACK);
-				if (md) {
-					md->master_id = src->id;
-					if (md->deletetimer != INVALID_TIMER)
-						timer->delete(md->deletetimer, mob->timer_delete);
-					md->deletetimer = timer->add(timer->gettick() + skill->get_time(skill_id, skill_lv), mob->timer_delete, md->bl.id, 0);
-					mob->spawn(md); //Now it is ready for spawning.
-					sc_start4(&md->bl, SC_MODECHANGE, 100, 1, 0, MD_CANATTACK|MD_AGGRESSIVE, 0, 60000);
+				summon_md = mob->once_spawn_sub(src, src->m, src->x, src->y, status->get_name(src), summons[skill_lv - 1], "", SZ_MEDIUM, AI_ATTACK);
+				if (summon_md) {
+					summon_md->master_id = src->id;
+					if (summon_md->deletetimer != INVALID_TIMER)
+						timer->delete(summon_md->deletetimer, mob->timer_delete);
+					summon_md->deletetimer = timer->add(timer->gettick() + skill->get_time(skill_id, skill_lv), mob->timer_delete, summon_md->bl.id, 0);
+					mob->spawn(summon_md); //Now it is ready for spawning.
+					sc_start4(&summon_md->bl, SC_MODECHANGE, 100, 1, 0, MD_CANATTACK|MD_AGGRESSIVE, 0, 60000);
 				}
 			}
 			if (hd)
@@ -9658,7 +9710,7 @@ int skill_castend_pos2(struct block_list* src, int x, int y, uint16 skill_id, ui
 	struct status_change_entry *sce;
 	struct skill_unit_group* sg;
 	enum sc_type type;
-	int i;
+	int r;
 
 	//if(skill_lv <= 0) return 0;
 	if(skill_id > 0 && !skill_lv) return 0;	// celest
@@ -9694,47 +9746,46 @@ int skill_castend_pos2(struct block_list* src, int x, int y, uint16 skill_id, ui
 
 	switch(skill_id) {
 		case PR_BENEDICTIO:
+			r = skill->get_splash(skill_id, skill_lv);
 			skill->area_temp[1] = src->id;
-			i = skill->get_splash(skill_id, skill_lv);
 			map->foreachinarea(skill->area_sub,
-			                   src->m, x-i, y-i, x+i, y+i, BL_PC,
+			                   src->m, x-r, y-r, x+r, y+r, BL_PC,
 			                   src, skill_id, skill_lv, tick, flag|BCT_ALL|1,
 			                   skill->castend_nodamage_id);
 			map->foreachinarea(skill->area_sub,
-			                   src->m, x-i, y-i, x+i, y+i, BL_CHAR,
+			                   src->m, x-r, y-r, x+r, y+r, BL_CHAR,
 			                   src, skill_id, skill_lv, tick, flag|BCT_ENEMY|1,
 			                   skill->castend_damage_id);
 			break;
 
 		case BS_HAMMERFALL:
-			i = skill->get_splash(skill_id, skill_lv);
+			r = skill->get_splash(skill_id, skill_lv);
 			map->foreachinarea(skill->area_sub,
-			                   src->m, x-i, y-i, x+i, y+i, BL_CHAR,
+			                   src->m, x-r, y-r, x+r, y+r, BL_CHAR,
 			                   src, skill_id, skill_lv, tick, flag|BCT_ENEMY|2,
 			                   skill->castend_nodamage_id);
 			break;
 
 		case HT_DETECTING:
-			i = skill->get_splash(skill_id, skill_lv);
+			r = skill->get_splash(skill_id, skill_lv);
 			map->foreachinarea(status->change_timer_sub,
-			                   src->m, x-i, y-i, x+i,y+i,BL_CHAR,
+			                   src->m, x-r, y-r, x+r,y+r,BL_CHAR,
 			                   src,NULL,SC_SIGHT,tick);
 			if(battle_config.traps_setting&1)
 			map->foreachinarea(skill_reveal_trap,
-			                   src->m, x-i, y-i, x+i,y+i,BL_SKILL);
+			                   src->m, x-r, y-r, x+r, y+r, BL_SKILL);
 			break;
 
 		case SR_RIDEINLIGHTNING:
-			i = skill->get_splash(skill_id, skill_lv);
-			map->foreachinarea(skill->area_sub, src->m, x-i, y-i, x+i, y+i, BL_CHAR,
+			r = skill->get_splash(skill_id, skill_lv);
+			map->foreachinarea(skill->area_sub, src->m, x-r, y-r, x+r, y+r, BL_CHAR,
 			                   src, skill_id, skill_lv, tick, flag|BCT_ENEMY|1, skill->castend_damage_id);
 			break;
 
 		case SA_VOLCANO:
 		case SA_DELUGE:
 		case SA_VIOLENTGALE:
-		{	//Does not consumes if the skill is already active. [Skotlex]
-			struct skill_unit_group *sg;
+			//Does not consumes if the skill is already active. [Skotlex]
 			if ((sg= skill->locate_element_field(src)) != NULL && ( sg->skill_id == SA_VOLCANO || sg->skill_id == SA_DELUGE || sg->skill_id == SA_VIOLENTGALE ))
 			{
 				if (sg->limit - DIFF_TICK(timer->gettick(), sg->tick) > 0) {
@@ -9745,7 +9796,7 @@ int skill_castend_pos2(struct block_list* src, int x, int y, uint16 skill_id, ui
 			}
 			skill->unitsetting(src,skill_id,skill_lv,x,y,0);
 			break;
-		}
+
 		case MG_SAFETYWALL:
 		case MG_FIREWALL:
 		case MG_THUNDERSTORM:
@@ -9888,8 +9939,8 @@ int skill_castend_pos2(struct block_list* src, int x, int y, uint16 skill_id, ui
 			flag|=1;
 			break;
 		case RG_CLEANER: // [Valaris]
-			i = skill->get_splash(skill_id, skill_lv);
-			map->foreachinarea(skill->graffitiremover,src->m,x-i,y-i,x+i,y+i,BL_SKILL);
+			r = skill->get_splash(skill_id, skill_lv);
+			map->foreachinarea(skill->graffitiremover,src->m,x-r,y-r,x+r,y+r,BL_SKILL);
 			break;
 
 		case SO_WARMER:
@@ -9898,9 +9949,11 @@ int skill_castend_pos2(struct block_list* src, int x, int y, uint16 skill_id, ui
 			skill->unitsetting(src,skill_id,skill_lv,x,y,0);
 			break;
 
-		case WZ_METEOR: {
+		case WZ_METEOR:
+			{
 				int area = skill->get_splash(skill_id, skill_lv);
 				short tmpx = 0, tmpy = 0, x1 = 0, y1 = 0;
+				int i;
 
 				for( i = 0; i < 2 + (skill_lv>>1); i++ ) {
 					// Creates a random Cell in the Splash Area
@@ -10033,8 +10086,8 @@ int skill_castend_pos2(struct block_list* src, int x, int y, uint16 skill_id, ui
 			if (rnd()%100 < 80) {
 				int dummy = 1;
 				clif->skill_poseffect(src,skill_id,skill_lv,x,y,tick);
-				i = skill->get_splash(skill_id, skill_lv);
-				map->foreachinarea(skill->cell_overlap, src->m, x-i, y-i, x+i, y+i, BL_SKILL, HW_GANBANTEIN, &dummy, src);
+				r = skill->get_splash(skill_id, skill_lv);
+				map->foreachinarea(skill->cell_overlap, src->m, x-r, y-r, x+r, y+r, BL_SKILL, HW_GANBANTEIN, &dummy, src);
 			} else {
 				if (sd) clif->skill_fail(sd,skill_id,USESKILL_FAIL_LEVEL,0);
 				return 1;
@@ -10115,14 +10168,14 @@ int skill_castend_pos2(struct block_list* src, int x, int y, uint16 skill_id, ui
 		case NC_ARMSCANNON:
 		case RK_DRAGONBREATH:
 		case RK_DRAGONBREATH_WATER:
-			i = skill->get_splash(skill_id,skill_lv);
-			map->foreachinarea(skill->area_sub,src->m,x-i,y-i,x+i,y+i,splash_target(src),
+			r = skill->get_splash(skill_id,skill_lv);
+			map->foreachinarea(skill->area_sub,src->m,x-r,y-r,x+r,y+r,splash_target(src),
 			                   src,skill_id,skill_lv,tick,flag|BCT_ENEMY|1,skill->castend_damage_id);
 			break;
 
 		case SO_ARRULLO:
-			i = skill->get_splash(skill_id,skill_lv);
-			map->foreachinarea(skill->area_sub,src->m,x-i,y-i,x+i,y+i,splash_target(src),
+			r = skill->get_splash(skill_id,skill_lv);
+			map->foreachinarea(skill->area_sub,src->m,x-r,y-r,x+r,y+r,splash_target(src),
 			                   src, skill_id, skill_lv, tick, flag|BCT_ENEMY|1, skill->castend_nodamage_id);
 			break;
 		/**
@@ -10143,8 +10196,8 @@ int skill_castend_pos2(struct block_list* src, int x, int y, uint16 skill_id, ui
 		 **/
 		case AB_EPICLESIS:
 			if( (sg = skill->unitsetting(src, skill_id, skill_lv, x, y, 0)) ) {
-				i = sg->unit->range;
-				map->foreachinarea(skill->area_sub, src->m, x - i, y - i, x + i, y + i, BL_CHAR, src, ALL_RESURRECTION, 1, tick, flag|BCT_NOENEMY|1,skill->castend_nodamage_id);
+				r = sg->unit->range;
+				map->foreachinarea(skill->area_sub, src->m, x - r, y - r, x + r, y + r, BL_CHAR, src, ALL_RESURRECTION, 1, tick, flag|BCT_NOENEMY|1,skill->castend_nodamage_id);
 			}
 			break;
 
@@ -10169,8 +10222,8 @@ int skill_castend_pos2(struct block_list* src, int x, int y, uint16 skill_id, ui
 		 * Ranger
 		 **/
 		case RA_DETONATOR:
-			i = skill->get_splash(skill_id, skill_lv);
-			map->foreachinarea(skill->detonator, src->m, x-i, y-i, x+i, y+i, BL_SKILL, src);
+			r = skill->get_splash(skill_id, skill_lv);
+			map->foreachinarea(skill->detonator, src->m, x-r, y-r, x+r, y+r, BL_SKILL, src);
 			clif->skill_damage(src, src, tick, status_get_amotion(src), 0, -30000, 1, skill_id, skill_lv, 6);
 			break;
 		/**
@@ -10222,6 +10275,7 @@ int skill_castend_pos2(struct block_list* src, int x, int y, uint16 skill_id, ui
 		case LG_OVERBRAND:
 			{
 				int width;//according to data from irowiki it actually is a square
+				int i;
 				for( width = 0; width < 7; width++ )
 					for( i = 0; i < 7; i++ )
 						map->foreachincell(skill->area_sub, src->m, x-2+i, y-2+width, splash_target(src), src, LG_OVERBRAND_BRANDISH, skill_lv, tick, flag|BCT_ENEMY,skill->castend_damage_id);
@@ -10243,26 +10297,28 @@ int skill_castend_pos2(struct block_list* src, int x, int y, uint16 skill_id, ui
 
 		case LG_RAYOFGENESIS:
 			if( status->charge(src,status_get_max_hp(src)*3*skill_lv / 100,0) ) {
-				i = skill->get_splash(skill_id,skill_lv);
-				map->foreachinarea(skill->area_sub,src->m,x-i,y-i,x+i,y+i,splash_target(src),
+				r = skill->get_splash(skill_id,skill_lv);
+				map->foreachinarea(skill->area_sub,src->m,x-r,y-r,x+r,y+r,splash_target(src),
 					src,skill_id,skill_lv,tick,flag|BCT_ENEMY|1,skill->castend_damage_id);
 			} else if( sd )
 				clif->skill_fail(sd,skill_id,USESKILL_FAIL,0);
 			break;
 
 		case WM_DOMINION_IMPULSE:
-			i = skill->get_splash(skill_id, skill_lv);
+			r = skill->get_splash(skill_id, skill_lv);
 			map->foreachinarea( skill->activate_reverberation,
-				src->m, x-i, y-i, x+i,y+i,BL_SKILL);
+				src->m, x-r, y-r, x+r,y+r,BL_SKILL);
 			break;
 
 		case WM_GREAT_ECHO:
 			flag|=1; // Should counsume 1 item per skill usage.
 			map->foreachinrange(skill->area_sub, src, skill->get_splash(skill_id,skill_lv),splash_target(src), src, skill_id, skill_lv, tick, flag|BCT_ENEMY, skill->castend_damage_id);
 			break;
-		case GN_CRAZYWEED: {
+		case GN_CRAZYWEED:
+			{
 				int area = skill->get_splash(GN_CRAZYWEED_ATK, skill_lv);
 				short x1 = 0, y1 = 0;
+				int i;
 
 				for( i = 0; i < 3 + (skill_lv/2); i++ ) {
 					x1 = x - area + rnd()%(area * 2 + 1);
@@ -10315,11 +10371,14 @@ int skill_castend_pos2(struct block_list* src, int x, int y, uint16 skill_id, ui
 			break;
 
 		case KO_MAKIBISHI:
+		{
+			int i;
 			for( i = 0; i < (skill_lv+2); i++ ) {
 				x = src->x - 1 + rnd()%3;
 				y = src->y - 1 + rnd()%3;
 				skill->unitsetting(src,skill_id,skill_lv,x,y,0);
 			}
+		}
 			break;
 
 		default:
@@ -10848,9 +10907,9 @@ struct skill_unit_group* skill_unitsetting(struct block_list *src, uint16 skill_
 		struct skill_unit *su;
 		int ux = x + layout->dx[i];
 		int uy = y + layout->dy[i];
-		int val1 = skill_lv;
-		int val2 = 0;
 		int alive = 1;
+		val1 = skill_lv;
+		val2 = 0;
 
 		if( !group->state.song_dance && !map->getcell(src->m,ux,uy,CELL_CHKREACH) )
 			continue; // don't place skill units on walls (except for songs/dances/encores)
@@ -12294,7 +12353,6 @@ int skill_check_condition_castbegin(struct map_session_data* sd, uint16 skill_id
 	struct status_data *st;
 	struct status_change *sc;
 	struct skill_condition require;
-	int i;
 
 	nullpo_ret(sd);
 
@@ -12336,6 +12394,7 @@ int skill_check_condition_castbegin(struct map_session_data* sd, uint16 skill_id
 		if( sd->state.abra_flag ) // Hocus-Pocus was used. [Inkfish]
 			sd->state.abra_flag = 0;
 		else {
+			int i;
 			// When a target was selected, consume items that were skipped in pc_use_item [Skotlex]
 			if( (i = sd->itemindex) == -1 ||
 				sd->status.inventory[i].nameid != sd->itemid ||
@@ -12489,34 +12548,38 @@ int skill_check_condition_castbegin(struct map_session_data* sd, uint16 skill_id
 				return 0;
 			if(sc->data[SC_BLADESTOP])
 				break;
-			if( (i=(sc && sc->data[SC_COMBOATTACK])) && sc->data[SC_COMBOATTACK]->val1 == MO_TRIPLEATTACK )
-				break;
-			if( i )
+			if( sc && sc->data[SC_COMBOATTACK] ) {
+				if( sc->data[SC_COMBOATTACK]->val1 == MO_TRIPLEATTACK )
+					break;
 				clif->skill_fail(sd, skill_id, USESKILL_FAIL_COMBOSKILL, MO_TRIPLEATTACK);
+			}
 			return 0;
 		case MO_COMBOFINISH:
 			if(!sc)
 				return 0;
-			if( (i=(sc && sc->data[SC_COMBOATTACK])) && sc->data[SC_COMBOATTACK]->val1 == MO_CHAINCOMBO )
-				break;
-			if( i )
+			if( sc && sc->data[SC_COMBOATTACK] ) {
+				if ( sc->data[SC_COMBOATTACK]->val1 == MO_CHAINCOMBO )
+					break;
 				clif->skill_fail(sd, skill_id, USESKILL_FAIL_COMBOSKILL, MO_CHAINCOMBO);
+			}
 			return 0;
 		case CH_TIGERFIST:
 			if(!sc)
 				return 0;
-			if( (i=(sc && sc->data[SC_COMBOATTACK])) && sc->data[SC_COMBOATTACK]->val1 == MO_COMBOFINISH )
-				break;
-			if( i )
+			if( sc && sc->data[SC_COMBOATTACK] ) {
+				if ( sc->data[SC_COMBOATTACK]->val1 == MO_COMBOFINISH )
+					break;
 				clif->skill_fail(sd, skill_id, USESKILL_FAIL_COMBOSKILL, MO_COMBOFINISH);
+			}
 			return 0;
 		case CH_CHAINCRUSH:
 			if(!sc)
 				return 0;
-			if( (i=(sc && sc->data[SC_COMBOATTACK])) && sc->data[SC_COMBOATTACK]->val1 == CH_TIGERFIST )
-				break;
-			if( i )
+			if( sc && sc->data[SC_COMBOATTACK] ) {
+				if( sc->data[SC_COMBOATTACK]->val1 == CH_TIGERFIST )
+					break;
 				clif->skill_fail(sd, skill_id, USESKILL_FAIL_COMBOSKILL, CH_TIGERFIST);
+			}
 			return 0;
 		case MO_EXTREMITYFIST:
 	//		if(sc && sc->data[SC_EXTREMITYFIST]) //To disable Asura during the 5 min skill block uncomment this...
@@ -12664,8 +12727,7 @@ int skill_check_condition_castbegin(struct map_session_data* sd, uint16 skill_id
 		case SG_STAR_WARM:
 			if (sc && sc->data[SC_MIRACLE])
 				break;
-			i = skill_id-SG_SUN_WARM;
-			if (sd->bl.m == sd->feel_map[i].m)
+			if (sd->bl.m == sd->feel_map[skill_id-SG_SUN_WARM].m)
 				break;
 			clif->skill_fail(sd,skill_id,USESKILL_FAIL_LEVEL,0);
 			return 0;
@@ -12675,9 +12737,8 @@ int skill_check_condition_castbegin(struct map_session_data* sd, uint16 skill_id
 		case SG_STAR_COMFORT:
 			if (sc && sc->data[SC_MIRACLE])
 				break;
-			i = skill_id-SG_SUN_COMFORT;
-			if (sd->bl.m == sd->feel_map[i].m &&
-				(battle_config.allow_skill_without_day || pc->sg_info[i].day_func()))
+			if (sd->bl.m == sd->feel_map[skill_id-SG_SUN_COMFORT].m &&
+				(battle_config.allow_skill_without_day || pc->sg_info[skill_id-SG_SUN_COMFORT].day_func()))
 				break;
 			clif->skill_fail(sd,skill_id,USESKILL_FAIL_LEVEL,0);
 			return 0;
@@ -12758,7 +12819,7 @@ int skill_check_condition_castbegin(struct map_session_data* sd, uint16 skill_id
 		 **/
 		case AB_ANCILLA:
 			{
-				int count = 0;
+				int count = 0, i;
 				for( i = 0; i < MAX_INVENTORY; i ++ )
 					if( sd->status.inventory[i].nameid == ITEMID_ANCILLA )
 						count += sd->status.inventory[i].amount;
@@ -12785,12 +12846,15 @@ int skill_check_condition_castbegin(struct map_session_data* sd, uint16 skill_id
 		 * Warlock
 		 **/
 		case WL_COMET:
-			if( skill->check_pc_partner(sd,skill_id,&skill_lv,1,0) <= 0 && ((i = pc->search_inventory(sd,require.itemid[0])) < 0 || sd->status.inventory[i].amount < require.amount[0]) )
+		{
+			int idx;
+			if( skill->check_pc_partner(sd,skill_id,&skill_lv,1,0) <= 0 && ((idx = pc->search_inventory(sd,require.itemid[0])) < 0 || sd->status.inventory[idx].amount < require.amount[0]) )
 			{
 				//clif->skill_fail(sd,skill_id,USESKILL_FAIL_NEED_ITEM,require.amount[0],require.itemid[0]);
 				clif->skill_fail(sd,skill_id,USESKILL_FAIL_LEVEL,0);
 				return 0;
 			}
+		}
 			break;
 		case WL_SUMMONFB:
 		case WL_SUMMONBL:
@@ -12799,10 +12863,9 @@ int skill_check_condition_castbegin(struct map_session_data* sd, uint16 skill_id
 		case WL_TETRAVORTEX:
 		case WL_RELEASE:
 			{
-				int x = SC_SUMMON1;
-				i = 0;
-				for(; x <= SC_SUMMON5; x++)
-					if( sc && sc->data[x] )	
+				int j, i = 0;
+				for(j = SC_SUMMON1; j <= SC_SUMMON5; j++)
+					if( sc && sc->data[j] )	
 						i++;
 
 				switch(skill_id){
@@ -12813,8 +12876,8 @@ int skill_check_condition_castbegin(struct map_session_data* sd, uint16 skill_id
 						}
 						break;
 					case WL_RELEASE:
-						for(x = SC_SPELLBOOK7; x >= SC_SPELLBOOK1; x--)
-							if( sc && sc->data[x] )
+						for(j = SC_SPELLBOOK7; j >= SC_SPELLBOOK1; j--)
+							if( sc && sc->data[j] )
 								i++;
 						if( i == 0 ){
 							clif->skill_fail(sd,skill_id,USESKILL_FAIL_SUMMON_NONE,0);
@@ -12910,12 +12973,11 @@ int skill_check_condition_castbegin(struct map_session_data* sd, uint16 skill_id
 			}
 			break;
 		case SR_FALLENEMPIRE:
-			if( !sc )
-				return 0;
-			if( (i=(sc && sc->data[SC_COMBOATTACK])) && sc->data[SC_COMBOATTACK]->val1 == SR_DRAGONCOMBO )
-				break;
-			if( i )
+			if( sc && sc->data[SC_COMBOATTACK] ) {
+				if( sc->data[SC_COMBOATTACK]->val1 == SR_DRAGONCOMBO )
+					break;
 				clif->skill_fail(sd, skill_id, USESKILL_FAIL_COMBOSKILL, SR_DRAGONCOMBO);
+			}
 			return 0;
 		case SR_CRESCENTELBOW:
 			if( sc && sc->data[SC_CRESCENTELBOW] ) {
@@ -13002,11 +13064,14 @@ int skill_check_condition_castbegin(struct map_session_data* sd, uint16 skill_id
 			break;
 		case KO_KAIHOU:
 		case KO_ZENKAI:
-			ARR_FIND(1, 6, i, sd->charm[i] > 0);
+		{
+			int i;
+			ARR_FIND(1, 6, i, sd->charm[i] > 0); // FIXME: 4 or 6?
 			if( i > 4 ) {
 				clif->skill_fail(sd,skill_id,USESKILL_FAIL_SUMMON,0);
 				return 0;
 			}
+		}
 			break;
 	}
 
@@ -14887,17 +14952,17 @@ int skill_chastle_mob_changetarget(struct block_list *bl,va_list ap)
 int skill_trap_splash(struct block_list *bl, va_list ap) {
 	struct block_list *src;
 	int64 tick;
-	struct skill_unit *su;
+	struct skill_unit *src_su;
 	struct skill_unit_group *sg;
 	struct block_list *ss;
 	src = va_arg(ap,struct block_list *);
-	su = (struct skill_unit *)src;
+	src_su = (struct skill_unit *)src;
 	tick = va_arg(ap,int64);
 
-	if( !su->alive || bl->prev == NULL )
+	if( !src_su->alive || bl->prev == NULL )
 		return 0;
 
-	nullpo_ret(sg = su->group);
+	nullpo_ret(sg = src_su->group);
 	nullpo_ret(ss = map->id2bl(sg->src_id));
 
 	if(battle->check_target(src,bl,sg->target_flag) <= 0)
@@ -16101,11 +16166,11 @@ int skill_produce_mix(struct map_session_data *sd, uint16 skill_id, int nameid,
 	}
 
 	if( skill_id == RK_RUNEMASTERY ) {
-		int temp_qty, skill_lv = pc->checkskill(sd,skill_id);
+		int temp_qty, rune_skill_lv = pc->checkskill(sd,skill_id);
 		data = itemdb->search(nameid);
 
-		if( skill_lv == 10 ) temp_qty = 1 + rnd()%3;
-		else if( skill_lv > 5 ) temp_qty = 1 + rnd()%2;
+		if( rune_skill_lv == 10 ) temp_qty = 1 + rnd()%3;
+		else if( rune_skill_lv > 5 ) temp_qty = 1 + rnd()%2;
 		else temp_qty = 1;
 
 		if (data->stack.inventory) {
@@ -17844,8 +17909,8 @@ bool skill_parse_row_unitdb(char* split[], int columns, int current) {
 	if( !idx ) // invalid skill id
 		return false;
 
-	skill->db[idx].unit_id[0] = strtol(split[1],NULL,16);
-	skill->db[idx].unit_id[1] = strtol(split[2],NULL,16);
+	skill->db[idx].unit_id[0] = (int)strtol(split[1],NULL,16);
+	skill->db[idx].unit_id[1] = (int)strtol(split[2],NULL,16);
 	skill->split_atoi(split[3],skill->db[idx].unit_layout_type);
 	skill->split_atoi(split[4],skill->db[idx].unit_range);
 	skill->db[idx].unit_interval = atoi(split[5]);
@@ -17860,9 +17925,9 @@ bool skill_parse_row_unitdb(char* split[], int columns, int current) {
 	else if( strcmpi(split[6],"self")==0 ) skill->db[idx].unit_target = BCT_SELF;
 	else if( strcmpi(split[6],"sameguild")==0 ) skill->db[idx].unit_target = BCT_GUILD|BCT_SAMEGUILD;
 	else if( strcmpi(split[6],"noone")==0 ) skill->db[idx].unit_target = BCT_NOONE;
-	else skill->db[idx].unit_target = strtol(split[6],NULL,16);
+	else skill->db[idx].unit_target = (int)strtol(split[6],NULL,16);
 
-	skill->db[idx].unit_flag = strtol(split[7],NULL,16);
+	skill->db[idx].unit_flag = (int)strtol(split[7],NULL,16);
 
 	if (skill->db[idx].unit_flag&UF_DEFNOTENEMY && battle_config.defnotenemy)
 		skill->db[idx].unit_target = BCT_NOENEMY;
diff --git a/src/map/status.c b/src/map/status.c
index ed29bacf9..6cfd799f1 100644
--- a/src/map/status.c
+++ b/src/map/status.c
@@ -1418,34 +1418,28 @@ int status_percent_change(struct block_list *src,struct block_list *target,signe
 
 	st = status->get_status_data(target);
 
-
-	//It's safe now [MarkZD]
-	if (hp_rate > 99)
-		hp = st->hp;
-	else if (hp_rate > 0)
-		hp = st->hp>10000?
-		hp_rate*(st->hp/100):
-		((int64)hp_rate*st->hp)/100;
-	else if (hp_rate < -99)
-		hp = st->max_hp;
-	else if (hp_rate < 0)
-		hp = st->max_hp>10000?
-		(-hp_rate)*(st->max_hp/100):
-	((int64)-hp_rate*st->max_hp)/100;
+	if (hp_rate > 100)
+		hp_rate = 100;
+	else if (hp_rate < -100)
+		hp_rate = -100;
+	if (hp_rate > 0)
+		hp = APPLY_RATE(st->hp, hp_rate);
+	else
+		hp = APPLY_RATE(st->max_hp, -hp_rate);
 	if (hp_rate && !hp)
 		hp = 1;
 
 	if (flag == 2 && hp >= st->hp)
 		hp = st->hp-1; //Must not kill target.
 
-	if (sp_rate > 99)
-		sp = st->sp;
-	else if (sp_rate > 0)
-		sp = ((int64)sp_rate*st->sp)/100;
-	else if (sp_rate < -99)
-		sp = st->max_sp;
-	else if (sp_rate < 0)
-		sp = ((int64)-sp_rate)*st->max_sp/100;
+	if (sp_rate > 100)
+		sp_rate = 100;
+	else if (sp_rate < -100)
+		sp_rate = -100;
+	if (sp_rate > 0)
+		sp = APPLY_RATE(st->sp, sp_rate);
+	else
+		sp = APPLY_RATE(st->max_sp, -sp_rate);
 	if (sp_rate && !sp)
 		sp = 1;
 
@@ -1479,8 +1473,8 @@ int status_revive(struct block_list *bl, unsigned char per_hp, unsigned char per
 	if (st == &status->dummy)
 		return 0; //Invalid target.
 
-	hp = (int64)st->max_hp * per_hp/100;
-	sp = (int64)st->max_sp * per_sp/100;
+	hp = APPLY_RATE(st->max_hp, per_hp);
+	sp = APPLY_RATE(st->max_sp, per_sp);
 
 	if(hp > st->max_hp - st->hp)
 		hp = st->max_hp - st->hp;
@@ -2059,12 +2053,12 @@ int status_calc_mob_(struct mob_data* md, enum e_status_calc_opt opt) {
 		mbl = map->id2bl(md->master_id);
 
 	if (flag&8 && mbl) {
-		struct status_data *mstatus;
-		if ( (mstatus = status->get_base_status(mbl)) ) {
-			if( battle_config.slaves_inherit_speed&(mstatus->mode&MD_CANMOVE?1:2) )
-				mstatus->speed = mstatus->speed;
-			if( mstatus->speed < 2 ) /* minimum for the unit to function properly */
-				mstatus->speed = 2;
+		struct status_data *masterstatus = status->get_base_status(mbl);
+		if ( masterstatus ) {
+			if( battle_config.slaves_inherit_speed&(masterstatus->mode&MD_CANMOVE?1:2) )
+				masterstatus->speed = masterstatus->speed;
+			if( masterstatus->speed < 2 ) /* minimum for the unit to function properly */
+				masterstatus->speed = 2;
 		}
 	}
 
@@ -2778,9 +2772,9 @@ int status_calc_pc_(struct map_session_data* sd, enum e_status_calc_opt opt) {
 	if(sd->hprate < 0)
 		sd->hprate = 0;
 	if(sd->hprate!=100)
-		bstatus->max_hp = (int64)bstatus->max_hp * sd->hprate/100;
+		bstatus->max_hp = APPLY_RATE(bstatus->max_hp, sd->hprate);
 	if(battle_config.hp_rate != 100)
-		bstatus->max_hp = (int64)bstatus->max_hp * battle_config.hp_rate/100;
+		bstatus->max_hp = APPLY_RATE(bstatus->max_hp, battle_config.hp_rate);
 
 	if(bstatus->max_hp > (unsigned int)battle_config.max_hp)
 		bstatus->max_hp = battle_config.max_hp;
@@ -2812,9 +2806,9 @@ int status_calc_pc_(struct map_session_data* sd, enum e_status_calc_opt opt) {
 	if(sd->sprate < 0)
 		sd->sprate = 0;
 	if(sd->sprate!=100)
-		bstatus->max_sp = (int64)bstatus->max_sp * sd->sprate/100;
+		bstatus->max_sp = APPLY_RATE(bstatus->max_sp, sd->sprate);
 	if(battle_config.sp_rate != 100)
-		bstatus->max_sp = (int64)bstatus->max_sp * battle_config.sp_rate/100;
+		bstatus->max_sp = APPLY_RATE(bstatus->max_sp, battle_config.sp_rate);
 
 	if(bstatus->max_sp > (unsigned int)battle_config.max_sp)
 		bstatus->max_sp = battle_config.max_sp;
@@ -2833,11 +2827,11 @@ int status_calc_pc_(struct map_session_data* sd, enum e_status_calc_opt opt) {
 			&& battle_config.restart_hp_rate < 50)
 			bstatus->hp = bstatus->max_hp>>1;
 		else
-			bstatus->hp = (int64)bstatus->max_hp * battle_config.restart_hp_rate/100;
+			bstatus->hp = APPLY_RATE(bstatus->max_hp, battle_config.restart_hp_rate);
 		if(!bstatus->hp)
 			bstatus->hp = 1;
 
-		bstatus->sp = (int64)bstatus->max_sp * battle_config.restart_sp_rate /100;
+		bstatus->sp = APPLY_RATE(bstatus->max_sp, battle_config.restart_sp_rate);
 
 		if( !bstatus->sp ) /* the minimum for the respawn setting is SP:1 */
 			bstatus->sp = 1;
@@ -6573,10 +6567,8 @@ int status_change_start(struct block_list* bl,enum sc_type type,int rate,int val
 		case SC_NIBELUNGEN:
 		case SC_INTOABYSS:
 		case SC_SIEGFRIED:
-			if( bl->type == BL_PC) { 
-				struct map_session_data *sd = BL_CAST(BL_PC,bl);
-				if (!sd->status.party_id) return 0;
-			}
+			if( sd && !sd->status.party_id )
+				return 0;
 			break;
 		case SC_ANGRIFFS_MODUS:
 		case SC_GOLDENE_FERSE:
@@ -7302,7 +7294,7 @@ int status_change_start(struct block_list* bl,enum sc_type type,int rate,int val
 				val2 = val1*20; //SP gained
 				break;
 			case SC_KYRIE:
-				val2 = (int64)st->max_hp * (val1 * 2 + 10) / 100; //%Max HP to absorb
+				val2 = APPLY_RATE(st->max_hp, (val1 * 2 + 10)); //%Max HP to absorb
 				val3 = (val1 / 2 + 5); //Hits
 				break;
 			case SC_MAGICPOWER:
@@ -9402,15 +9394,15 @@ int status_change_end_(struct block_list* bl, enum sc_type type, int tid, const
 
 	case SC_BLADESTOP:
 		if(sce->val4) {
-			int tid = sce->val4;
-			struct block_list *tbl = map->id2bl(tid);
+			int target_id = sce->val4;
+			struct block_list *tbl = map->id2bl(target_id);
 			struct status_change *tsc = status->get_sc(tbl);
 			sce->val4 = 0;
 			if(tbl && tsc && tsc->data[SC_BLADESTOP]) {
 				tsc->data[SC_BLADESTOP]->val4 = 0;
 				status_change_end(tbl, SC_BLADESTOP, INVALID_TIMER);
 			}
-			clif->bladestop(bl, tid, 0);
+			clif->bladestop(bl, target_id, 0);
 		}
 		break;
 	case SC_DANCING:
@@ -9708,8 +9700,8 @@ int status_change_end_(struct block_list* bl, enum sc_type type, int tid, const
 	case SC_CURSEDCIRCLE_TARGET:
 	{
 		struct block_list *src = map->id2bl(sce->val2);
-		struct status_change *sc = status->get_sc(src);
-		if( sc && sc->data[SC_CURSEDCIRCLE_ATKER] && --(sc->data[SC_CURSEDCIRCLE_ATKER]->val2) == 0 ){
+		struct status_change *ssc = status->get_sc(src);
+		if( ssc && ssc->data[SC_CURSEDCIRCLE_ATKER] && --(ssc->data[SC_CURSEDCIRCLE_ATKER]->val2) == 0 ){
 			status_change_end(src, SC_CURSEDCIRCLE_ATKER, INVALID_TIMER);
 			clif->bladestop(bl, sce->val2, 0);
 		}
@@ -9719,8 +9711,8 @@ int status_change_end_(struct block_list* bl, enum sc_type type, int tid, const
 		if( sce->val2 ){
 			struct block_list *src = map->id2bl(sce->val2);
 			if(src) {
-				struct status_change *sc = status->get_sc(src);
-				sc->bs_counter--;
+				struct status_change *ssc = status->get_sc(src);
+				ssc->bs_counter--;
 			}
 		}
 		break;
@@ -10977,7 +10969,7 @@ int status_get_matk(struct block_list *bl, int flag) {
 	st->matk_min = status_base_matk_min(st) + (sd?sd->bonus.ematk:0);
 	st->matk_max = status_base_matk_max(st) + (sd?sd->bonus.ematk:0);
 #endif
-	if (bl->type&BL_PC && sd->matk_rate != 100) {
+	if (sd && sd->matk_rate != 100) {
 		st->matk_max = st->matk_max * sd->matk_rate/100;
 		st->matk_min = st->matk_min * sd->matk_rate/100;
 	}
diff --git a/src/map/status.h b/src/map/status.h
index 2a281aef4..cdf3e03d6 100644
--- a/src/map/status.h
+++ b/src/map/status.h
@@ -14,6 +14,21 @@ struct homun_data;
 struct mercenary_data;
 struct status_change;
 
+//Change the equation when the values are high enough to discard the
+//imprecision in exchange of overflow protection [Skotlex]
+//Also add 100% checks since those are the most used cases where we don't
+//want aproximation errors.
+#define APPLY_RATE(value, rate) ( \
+	(rate) == 100 ? \
+		(value) \
+	: ( \
+		(value) > 100000 ? \
+			(rate) * ( (value) / 100 ) \
+		: \
+			(value) * (rate) / 100 \
+	) \
+)
+
 /**
  * Max Refine available to your server
  * Changing this limit requires edits to refine_db.txt
diff --git a/src/map/unit.c b/src/map/unit.c
index 28dd68e7d..7f722684d 100644
--- a/src/map/unit.c
+++ b/src/map/unit.c
@@ -670,15 +670,15 @@ int unit_movepos(struct block_list *bl, short dst_x, short dst_y, int easy, bool
 		if( sd->status.pet_id > 0 && sd->pd && sd->pd->pet.intimate > 0 )
 		{ // Check if pet needs to be teleported. [Skotlex]
 			int flag = 0;
-			struct block_list* bl = &sd->pd->bl;
-			if( !checkpath && !path->search(NULL,bl->m,bl->x,bl->y,dst_x,dst_y,0,CELL_CHKNOPASS) )
+			struct block_list* pbl = &sd->pd->bl;
+			if( !checkpath && !path->search(NULL,pbl->m,pbl->x,pbl->y,dst_x,dst_y,0,CELL_CHKNOPASS) )
 				flag = 1;
-			else if (!check_distance_bl(&sd->bl, bl, AREA_SIZE)) //Too far, teleport.
+			else if (!check_distance_bl(&sd->bl, pbl, AREA_SIZE)) //Too far, teleport.
 				flag = 2;
 			if( flag )
 			{
-				unit->movepos(bl,sd->bl.x,sd->bl.y, 0, 0);
-				clif->slide(bl,bl->x,bl->y);
+				unit->movepos(pbl,sd->bl.x,sd->bl.y, 0, 0);
+				clif->slide(pbl,pbl->x,pbl->y);
 			}
 		}
 	}
@@ -720,6 +720,8 @@ int unit_blown(struct block_list* bl, int dx, int dy, int count, int flag)
 		struct skill_unit* su = NULL;
 		int nx, ny, result;
 
+		nullpo_ret(bl);
+
 		sd = BL_CAST(BL_PC, bl);
 		su = BL_CAST(BL_SKILL, bl);
 
diff --git a/src/tool/Makefile.in b/src/tool/Makefile.in
index 307aa6d2c..3d0de1122 100644
--- a/src/tool/Makefile.in
+++ b/src/tool/Makefile.in
@@ -4,9 +4,9 @@ CONFIG_H = $(wildcard $(CONFIG_D)/*.h) $(wildcard $(CONFIG_D)/*/*.h)
 
 COMMON_D = ../common
 COMMON_OBJ = $(addprefix $(COMMON_D)/obj_all/, des.o grfio.o malloc.o \
-             miniconsole.o minicore.o showmsg.o strlib.o utils.o)
+             nullpo.o miniconsole.o minicore.o showmsg.o strlib.o utils.o)
 COMMON_H = $(addprefix $(COMMON_D)/, cbasetypes.h console.h core.h des.h \
-           grfio.h malloc.h mmo.h showmsg.h strlib.h utils.h)
+           grfio.h malloc.h mmo.h nullpo.h showmsg.h strlib.h utils.h)
 
 LIBCONFIG_D = ../../3rdparty/libconfig
 LIBCONFIG_OBJ = $(addprefix $(LIBCONFIG_D)/, libconfig.o grammar.o scanctx.o \
diff --git a/src/tool/mapcache.c b/src/tool/mapcache.c
index 49f948709..caa55c87a 100644
--- a/src/tool/mapcache.c
+++ b/src/tool/mapcache.c
@@ -181,7 +181,7 @@ void cache_map(char *name, struct map_data *m)
 	strncpy(info.name, name, MAP_NAME_LENGTH);
 	info.xs = MakeShortLE(m->xs);
 	info.ys = MakeShortLE(m->ys);
-	info.len = MakeLongLE(len);
+	info.len = MakeLongLE((uint32)len);
 
 	// Append map header then compressed cells at the end of the file
 	fseek(map_cache_fp, header.file_size, SEEK_SET);
diff --git a/vcproj-10/mapcache.vcxproj b/vcproj-10/mapcache.vcxproj
index 61c6e8ea8..b8c901f14 100644
--- a/vcproj-10/mapcache.vcxproj
+++ b/vcproj-10/mapcache.vcxproj
@@ -124,19 +124,20 @@
   </ItemDefinitionGroup>
   <ItemGroup>
     <ClCompile Include="..\src\common\core.c" />
-	<ClCompile Include="..\src\common\console.c" />
+    <ClCompile Include="..\src\common\console.c" />
     <ClCompile Include="..\src\common\des.c" />
     <ClCompile Include="..\src\common\grfio.c" />
     <ClCompile Include="..\src\common\malloc.c" />
     <ClCompile Include="..\src\common\showmsg.c" />
     <ClCompile Include="..\src\common\strlib.c" />
     <ClCompile Include="..\src\common\utils.c" />
+    <ClCompile Include="..\src\common\nullpo.c" />
     <ClCompile Include="..\src\tool\mapcache.c" />
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\src\common\cbasetypes.h" />
     <ClInclude Include="..\src\common\core.h" />
-	<ClInclude Include="..\src\common\console.h" />
+    <ClInclude Include="..\src\common\console.h" />
     <ClInclude Include="..\src\common\des.h" />
     <ClInclude Include="..\src\common\grfio.h" />
     <ClInclude Include="..\src\common\malloc.h" />
@@ -145,7 +146,8 @@
     <ClInclude Include="..\src\common\strlib.h" />
     <ClInclude Include="..\src\common\utils.h" />
     <ClInclude Include="..\src\common\winapi.h" />
-	<ClInclude Include="..\src\config\renewal.h" />
+    <ClInclude Include="..\src\common\nullpo.h" />
+    <ClInclude Include="..\src\config\renewal.h" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
diff --git a/vcproj-10/mapcache.vcxproj.filters b/vcproj-10/mapcache.vcxproj.filters
index b32268443..e095c1e1c 100644
--- a/vcproj-10/mapcache.vcxproj.filters
+++ b/vcproj-10/mapcache.vcxproj.filters
@@ -25,6 +25,9 @@
     <ClCompile Include="..\src\common\utils.c">
       <Filter>common</Filter>
     </ClCompile>
+    <ClCompile Include="..\src\common\nullpo.c">
+      <Filter>common</Filter>
+    </ClCompile>
     <ClCompile Include="..\src\tool\mapcache.c">
       <Filter>mapcache</Filter>
     </ClCompile>
@@ -63,6 +66,9 @@
     <ClInclude Include="..\src\common\winapi.h">
       <Filter>common</Filter>
     </ClInclude>
+    <ClInclude Include="..\src\common\nullpo.h">
+      <Filter>common</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <Filter Include="common">
diff --git a/vcproj-11/mapcache.vcxproj b/vcproj-11/mapcache.vcxproj
index 390e0cc65..1135461ad 100644
--- a/vcproj-11/mapcache.vcxproj
+++ b/vcproj-11/mapcache.vcxproj
@@ -128,19 +128,20 @@
   </ItemDefinitionGroup>
   <ItemGroup>
     <ClCompile Include="..\src\common\core.c" />
-	<ClCompile Include="..\src\common\console.c" />
+    <ClCompile Include="..\src\common\console.c" />
     <ClCompile Include="..\src\common\des.c" />
     <ClCompile Include="..\src\common\grfio.c" />
     <ClCompile Include="..\src\common\malloc.c" />
     <ClCompile Include="..\src\common\showmsg.c" />
     <ClCompile Include="..\src\common\strlib.c" />
     <ClCompile Include="..\src\common\utils.c" />
+    <ClCompile Include="..\src\common\nullpo.c" />
     <ClCompile Include="..\src\tool\mapcache.c" />
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\src\common\cbasetypes.h" />
     <ClInclude Include="..\src\common\core.h" />
-	<ClInclude Include="..\src\common\console.h" />
+    <ClInclude Include="..\src\common\console.h" />
     <ClInclude Include="..\src\common\des.h" />
     <ClInclude Include="..\src\common\grfio.h" />
     <ClInclude Include="..\src\common\malloc.h" />
@@ -149,6 +150,7 @@
     <ClInclude Include="..\src\common\strlib.h" />
     <ClInclude Include="..\src\common\utils.h" />
     <ClInclude Include="..\src\common\winapi.h" />
+    <ClInclude Include="..\src\common\nullpo.h" />
     <ClInclude Include="..\src\config\renewal.h" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
diff --git a/vcproj-11/mapcache.vcxproj.filters b/vcproj-11/mapcache.vcxproj.filters
index dea00ce79..3fe21d74b 100644
--- a/vcproj-11/mapcache.vcxproj.filters
+++ b/vcproj-11/mapcache.vcxproj.filters
@@ -4,7 +4,7 @@
     <ClCompile Include="..\src\common\core.c">
       <Filter>common</Filter>
     </ClCompile>
-	<ClCompile Include="..\src\common\console.c">
+    <ClCompile Include="..\src\common\console.c">
       <Filter>common</Filter>
     </ClCompile>
     <ClCompile Include="..\src\common\des.c">
@@ -25,6 +25,9 @@
     <ClCompile Include="..\src\common\utils.c">
       <Filter>common</Filter>
     </ClCompile>
+    <ClCompile Include="..\src\common\nullpo.c">
+      <Filter>common</Filter>
+    </ClCompile>
     <ClCompile Include="..\src\tool\mapcache.c">
       <Filter>mapcache</Filter>
     </ClCompile>
@@ -36,7 +39,7 @@
     <ClInclude Include="..\src\common\core.h">
       <Filter>common</Filter>
     </ClInclude>
-	<ClInclude Include="..\src\common\console.h">
+    <ClInclude Include="..\src\common\console.h">
       <Filter>common</Filter>
     </ClInclude>
     <ClInclude Include="..\src\common\des.h">
@@ -63,6 +66,9 @@
     <ClInclude Include="..\src\common\winapi.h">
       <Filter>common</Filter>
     </ClInclude>
+    <ClInclude Include="..\src\common\nullpo.h">
+      <Filter>common</Filter>
+    </ClInclude>
     <ClInclude Include="..\src\config\renewal.h" />
   </ItemGroup>
   <ItemGroup>
diff --git a/vcproj-12/mapcache.vcxproj b/vcproj-12/mapcache.vcxproj
index 44b063cba..3be84f4d4 100644
--- a/vcproj-12/mapcache.vcxproj
+++ b/vcproj-12/mapcache.vcxproj
@@ -135,6 +135,7 @@
     <ClCompile Include="..\src\common\showmsg.c" />
     <ClCompile Include="..\src\common\strlib.c" />
     <ClCompile Include="..\src\common\utils.c" />
+    <ClCompile Include="..\src\common\nullpo.c" />
     <ClCompile Include="..\src\tool\mapcache.c" />
   </ItemGroup>
   <ItemGroup>
@@ -149,6 +150,7 @@
     <ClInclude Include="..\src\common\strlib.h" />
     <ClInclude Include="..\src\common\utils.h" />
     <ClInclude Include="..\src\common\winapi.h" />
+    <ClInclude Include="..\src\common\nullpo.h" />
     <ClInclude Include="..\src\config\renewal.h" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
diff --git a/vcproj-12/mapcache.vcxproj.filters b/vcproj-12/mapcache.vcxproj.filters
index dea00ce79..3fe21d74b 100644
--- a/vcproj-12/mapcache.vcxproj.filters
+++ b/vcproj-12/mapcache.vcxproj.filters
@@ -4,7 +4,7 @@
     <ClCompile Include="..\src\common\core.c">
       <Filter>common</Filter>
     </ClCompile>
-	<ClCompile Include="..\src\common\console.c">
+    <ClCompile Include="..\src\common\console.c">
       <Filter>common</Filter>
     </ClCompile>
     <ClCompile Include="..\src\common\des.c">
@@ -25,6 +25,9 @@
     <ClCompile Include="..\src\common\utils.c">
       <Filter>common</Filter>
     </ClCompile>
+    <ClCompile Include="..\src\common\nullpo.c">
+      <Filter>common</Filter>
+    </ClCompile>
     <ClCompile Include="..\src\tool\mapcache.c">
       <Filter>mapcache</Filter>
     </ClCompile>
@@ -36,7 +39,7 @@
     <ClInclude Include="..\src\common\core.h">
       <Filter>common</Filter>
     </ClInclude>
-	<ClInclude Include="..\src\common\console.h">
+    <ClInclude Include="..\src\common\console.h">
       <Filter>common</Filter>
     </ClInclude>
     <ClInclude Include="..\src\common\des.h">
@@ -63,6 +66,9 @@
     <ClInclude Include="..\src\common\winapi.h">
       <Filter>common</Filter>
     </ClInclude>
+    <ClInclude Include="..\src\common\nullpo.h">
+      <Filter>common</Filter>
+    </ClInclude>
     <ClInclude Include="..\src\config\renewal.h" />
   </ItemGroup>
   <ItemGroup>
diff --git a/vcproj-9/mapcache.vcproj b/vcproj-9/mapcache.vcproj
index eadf6b64e..a9d230b36 100644
--- a/vcproj-9/mapcache.vcproj
+++ b/vcproj-9/mapcache.vcproj
@@ -282,6 +282,14 @@
 				RelativePath="..\src\common\winapi.h"
 				>
 			</File>
+			<File
+				RelativePath="..\src\common\nullpo.h"
+				>
+			</File>
+			<File
+				RelativePath="..\src\common\nullpo.c"
+				>
+			</File>
 		</Filter>
 		<Filter
 			Name="mapcache"