Prevent possible buffer overflow in AL_PRINT

2007-12-22 14:00:10 -08:00
parent 51c5fa94aa
commit e516b3c0d3
1 changed files with 3 additions and 1 deletions
@@ -82,7 +82,9 @@ extern char _alDebug[256];
    if(!_al_print_fn) _al_print_fn  = __FILE__;  \
    else              _al_print_fn += 1;         \
    _al_print_i = snprintf(_alDebug, sizeof(_alDebug), "AL lib: %s:%d: ", _al_print_fn, __LINE__); \
-    snprintf(_alDebug+_al_print_i, sizeof(_alDebug)-_al_print_i, __VA_ARGS__); \
+    if(_al_print_i < (int)sizeof(_alDebug) && _al_print_i > 0) \
+        snprintf(_alDebug+_al_print_i, sizeof(_alDebug)-_al_print_i, __VA_ARGS__); \
+    _alDebug[sizeof(_alDebug)-1] = 0;            \
    fprintf(stderr, "%s", _alDebug);             \
 } while(0)