/* may be changed as long as 'allow_customize_debug' is set */
/* XXX use correct function pointer types */
-#if defined(CRYPTO_MDEBUG)
+#ifdef CRYPTO_MDEBUG
/* use default functions from mem_dbg.c */
static void (*malloc_debug_func)(void *,int,const char *,int,int)
= CRYPTO_dbg_malloc;
static long (*get_debug_options_func)(void) = NULL;
#endif
-extern void OPENSSL_init(void);
-
int CRYPTO_set_mem_functions(void *(*m)(size_t), void *(*r)(void *, size_t),
void (*f)(void *))
{
if (num <= 0) return NULL;
+ /* We don't support shrinking the buffer. Note the memcpy that copies
+ * |old_len| bytes to the new buffer, below. */
+ if (num < old_len) return NULL;
+
if (realloc_debug_func != NULL)
realloc_debug_func(str, NULL, num, file, line, 0);
ret=malloc_ex_func(num,file,line);