X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=ETL%2Ftrunk%2FETL%2F_stringf.h;h=3d0c020106dfb4bb373051cd9922d1d72b25d81c;hb=4cfe2b68ebd2556f9926965dcea2ca8f3fc050ea;hp=69627993cb45c9caffdaca59d415bd95af831399;hpb=cc91f4f6b469483cf8e01f8a0beec543ceed4bf6;p=synfig.git

diff --git a/ETL/trunk/ETL/_stringf.h b/ETL/trunk/ETL/_stringf.h
index 6962799..3d0c020 100644
--- a/ETL/trunk/ETL/_stringf.h
+++ b/ETL/trunk/ETL/_stringf.h
@@ -30,9 +30,14 @@
 
 /* === H E A D E R S ======================================================= */
 
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+
 #include <string>
 #include <cstdarg>
 #include <cstdlib>
+#include <cstdio>
 
 /* === M A C R O S ========================================================= */
 
@@ -58,22 +63,33 @@ _ETL_BEGIN_CDECLS
 #define ETL_NO_THROW throw()
 #endif
 
+// Prefer prototypes from glibc headers, since defining them ourselves
+// works around glibc security mechanisms
+
 #ifdef HAVE_VASPRINTF	// This is the preferred method
- extern int vasprintf(char **,const char *,va_list)ETL_NO_THROW;
+ #ifndef __GLIBC__
+  extern int vasprintf(char **,const char *,va_list)ETL_NO_THROW;
+ #endif
 #else
 
 # ifdef HAVE_VSNPRINTF	// This is the secondary method
- extern int vsnprintf(char *,size_t,const char*,va_list)ETL_NO_THROW;
+ #ifndef __GLIBC__
+  extern int vsnprintf(char *,size_t,const char*,va_list)ETL_NO_THROW;
+ #endif
 # endif
 
 #endif
 
 #ifdef HAVE_VSSCANF
-extern int vsscanf(const char *,const char *,va_list)ETL_NO_THROW;
+ #ifndef __GLIBC__
+  extern int vsscanf(const char *,const char *,va_list)ETL_NO_THROW;
+ #endif
 #else
 #define ETL_NO_VSTRSCANF
 #ifdef HAVE_SSCANF
-extern int sscanf(const char *buf, const char *format, ...)ETL_NO_THROW;
+ #ifndef __GLIBC__
+  extern int sscanf(const char *buf, const char *format, ...)ETL_NO_THROW;
+ #endif
 #endif
 #endif
 
@@ -91,9 +107,12 @@ vstrprintf(const char *format, va_list args)
 #ifdef HAVE_VASPRINTF	// This is the preferred method (and safest)
 	char *buffer;
 	std::string ret;
-	vasprintf(&buffer,format,args);
-	ret=buffer;
-	free(buffer);
+	int i=vasprintf(&buffer,format,args);
+	if (i>-1)
+	{
+		ret=buffer;
+		free(buffer);
+	}
 	return ret;
 #else
 #ifdef HAVE_VSNPRINTF	// This is the secondary method (Safe, but bulky)