From c5ff02958806ea5a672dcc9371602a6c090c6758 Mon Sep 17 00:00:00 2001
From: Andrei Karas <akaras@inbox.ru>
Date: Tue, 26 May 2015 01:07:08 +0300
Subject: Dump stack in nullpo*/Assert* function.

Also enable in configure linker flag -rdynamic.
---
 configure           |  3 ++-
 configure.in        |  1 +
 src/common/nullpo.c | 17 +++++++++++++++++
 3 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/configure b/configure
index 75fd62a97..b022ca2d5 100755
--- a/configure
+++ b/configure
@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.in 18c1133.
+# From configure.in 3bd5d73.
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.69.
 #
@@ -4616,6 +4616,7 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 CFLAGS="$CFLAGS -pipe -ffast-math -Wall -Wextra -Wno-sign-compare"
 CPPFLAGS="$CPPFLAGS -I../common"
+LDFLAGS="$LDFLAGS -rdynamic"
 
 
  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether byte ordering is bigendian" >&5
diff --git a/configure.in b/configure.in
index 9497ce6bc..d17f5b4a7 100644
--- a/configure.in
+++ b/configure.in
@@ -487,6 +487,7 @@ AC_LANG([C])
 
 CFLAGS="$CFLAGS -pipe -ffast-math -Wall -Wextra -Wno-sign-compare"
 CPPFLAGS="$CPPFLAGS -I../common"
+LDFLAGS="$LDFLAGS -rdynamic"
 
 
 AC_C_BIGENDIAN(
diff --git a/src/common/nullpo.c b/src/common/nullpo.c
index e61d52257..97b206835 100644
--- a/src/common/nullpo.c
+++ b/src/common/nullpo.c
@@ -8,7 +8,11 @@
 
 #include <stdio.h>
 #include <stdarg.h>
+#include <stdlib.h>
 #include <string.h>
+#ifdef __GNUC__
+#include <execinfo.h>
+#endif
 
 #include "../common/showmsg.h"
 
@@ -24,6 +28,12 @@ struct nullpo_interface nullpo_s;
  * @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) {
+#ifdef __GNUC__
+	void *array[10];
+	int size;
+	char **strings;
+	int i;
+#endif
 	if (file == NULL)
 		file = "??";
 
@@ -32,6 +42,13 @@ void assert_report(const char *file, int line, const char *func, const char *tar
 
 	ShowError("--- %s --------------------------------------------\n", title);
 	ShowError("%s:%d: '%s' in function `%s'\n", file, line, targetname, func);
+#ifdef __GNUC__
+	size = backtrace (array, 10);
+	strings = backtrace_symbols (array, size);
+	for (i = 0; i < size; i++)
+		ShowError("%s\n", strings[i]);
+	free (strings);
+#endif
 	ShowError("--- end %s ----------------------------------------\n", title);
 }
 
-- 
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