void* _safe_malloc (size_t, int, const char*);
void* _safe_calloc (size_t, size_t, int, const char*);
void _safe_realloc (void*, size_t, int, const char*);
void* _safe_malloc (size_t, int, const char*);
void* _safe_calloc (size_t, size_t, int, const char*);
void _safe_realloc (void*, size_t, int, const char*);