#if !HAVE_VASPRINTF
#include <assert.h>
#include <stdarg.h> /* vsnprintf */
-int vasprintf(char** ptr, const char* fmt, va_list ap) XBT_ATTRIB_PRINTF(1, 0);
+int vasprintf(char** ptr, const char* fmt, va_list ap) XBT_ATTRIB_PRINTF(2, 0);
int vasprintf(char **ptr, const char *fmt, va_list ap)
{
size_t str_m;