| /* |
| * Copyright 2002-2016 The OpenSSL Project Authors. All Rights Reserved. |
| * |
| * Licensed under the OpenSSL license (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); |
| } |