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authorai4rei <ai4rei@54d463be-8e91-2dee-dedb-b68131a5f0ec>2011-01-16 12:51:27 +0000
committerai4rei <ai4rei@54d463be-8e91-2dee-dedb-b68131a5f0ec>2011-01-16 12:51:27 +0000
commit941cb34b52c879ffeb2ec3959bef17b147268285 (patch)
tree60bcef1a0043a1abfa56fd94e756f7ab89395002 /src/map/script.c
parent17aeb75dcd66b99d540b6fc37604a4c8037ffec5 (diff)
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* Fixed a map-server crash, when a script attempts to call a local function, which has only a forward declaration. Such functions now count as script parse error (bugreport:4009, since r3422).
* Fixed definitions of local functions would set a label reference, even when their name was already taken (follow up to r14600, since r3422). git-svn-id: https://rathena.svn.sourceforge.net/svnroot/rathena/trunk@14675 54d463be-8e91-2dee-dedb-b68131a5f0ec
Diffstat (limited to 'src/map/script.c')
-rw-r--r--src/map/script.c31
1 files changed, 26 insertions, 5 deletions
diff --git a/src/map/script.c b/src/map/script.c
index ed1e13aee..f842b614a 100644
--- a/src/map/script.c
+++ b/src/map/script.c
@@ -70,6 +70,7 @@
// - remove dynamic allocation in add_word()
// - remove GETVALUE / SETVALUE
// - clean up the set_reg / set_val / setd_sub mess
+// - detect invalid label references at parse-time
//
// struct script_state* st;
@@ -1558,8 +1559,12 @@ const char* parse_syntax(const char* p)
// function declaration - just register the name
int l;
l = add_word(func_name);
- if( str_data[l].type == C_NOP )// set type only if the name did not exist before
+ if( str_data[l].type == C_NOP )// register only, if the name was not used by something else
str_data[l].type = C_USERFUNC;
+ else if( str_data[l].type == C_USERFUNC )
+ ; // already registered
+ else
+ disp_error_message("parse_syntax:function: function name is invalid", func_name);
// if, for , while ‚̕‚¶”»’è
p = parse_syntax_close(p2 + 1);
@@ -1585,11 +1590,16 @@ const char* parse_syntax(const char* p)
// Set the position of the function (label)
l=add_word(func_name);
- if( str_data[l].type == C_NOP )// set type only if the name did not exist before
+ if( str_data[l].type == C_NOP || str_data[l].type == C_USERFUNC )// register only, if the name was not used by something else
+ {
str_data[l].type = C_USERFUNC;
- set_label(l, script_pos, p);
- if( parse_options&SCRIPT_USE_LABEL_DB )
- strdb_put(scriptlabel_db, get_str(l), (void*)script_pos);
+ set_label(l, script_pos, p);
+ if( parse_options&SCRIPT_USE_LABEL_DB )
+ strdb_put(scriptlabel_db, get_str(l), (void*)script_pos);
+ }
+ else
+ disp_error_message("parse_syntax:function: function name is invalid", func_name);
+
return skip_space(p);
}
else
@@ -2006,6 +2016,7 @@ struct script_code* parse_script(const char *src,const char *file,int line,int o
struct script_code* code = NULL;
static int first=1;
char end;
+ bool unresolved_names = false;
if( src == NULL )
return NULL;// empty script
@@ -2129,6 +2140,16 @@ struct script_code* parse_script(const char *src,const char *file,int line,int o
j=next;
}
}
+ else if( str_data[i].type == C_USERFUNC )
+ {// 'function name;' without follow-up code
+ ShowError("parse_script: function '%s' declared but not defined.\n", str_buf+str_data[i].str);
+ unresolved_names = true;
+ }
+ }
+
+ if( unresolved_names )
+ {
+ disp_error_message("parse_script: unresolved function references", p);
}
#ifdef DEBUG_DISP