/*

 * Copyright 2002-2016 The OpenSSL Project Authors. All Rights Reserved.

 *

 * Licensed under the Apache License 2.0 (the "License").  You may not use

 * this file except in compliance with the License.  You can obtain a copy

 * in the file LICENSE in the source distribution or at

 * https://www.openssl.org/source/license.html

 */

#include <string.h>

#include <openssl/crypto.h>

/*

 * Pointer to memset is volatile so that compiler must de-reference

 * the pointer and can't assume that it points to any function in

 * particular (such as memset, which it then might further "optimize")

 */

typedef void *(*memset_t)(void *, int, size_t);

static volatile memset_t memset_func = memset;

void OPENSSL_cleanse(void *ptr, size_t len)

{

    memset_func(ptr, 0, len);

}