[core] safe memset calls memset() through volatile
safe_memclear() calls memset() through volatile func ptr
&& !defined(HAVE_EXPLICIT_MEMSET) \
&& !defined(HAVE_SECUREZEROMEMORY)
+typedef void *(*safe_memclear_func_t)(void *, int, size_t);
+extern volatile safe_memclear_func_t safe_memclear_func;
+volatile safe_memclear_func_t safe_memclear_func = memset;
+
# if defined(HAVE_WEAK_SYMBOLS)
/* it seems weak functions are never inlined, even for static builds */
__attribute__((weak)) void __li_safe_memset_hook(void *buf, size_t len);
@@ -33,7 +37,7 @@ static void* safe_memset(void *s, int c, size_t n)
volatile unsigned char *vs = (volatile unsigned char*)s;
do {
- memset(s, c, n);
+ safe_memclear_func(s, c, n);
} while (vs[volatile_zero] != (unsigned char)c);
# if defined(HAVE_WEAK_SYMBOLS)
__li_safe_memset_hook(s, n);
