status-go/vendor/github.com/mutecomm/go-sqlcipher/zeromem.c

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/* LibTomCrypt, modular cryptographic library -- Tom St Denis
*
* LibTomCrypt is a library that provides various cryptographic
* algorithms in a highly modular and flexible manner.
*
* The library is free for all purposes without any express
* guarantee it works.
*
* Tom St Denis, tomstdenis@gmail.com, http://libtom.org
*/
#include "tomcrypt.h"
#include <string.h>
/**
@file zeromem.c
Zero a block of memory, Tom St Denis
*/
/*
* 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;
/**
Zero a block of memory
@param out The destination of the area to zero
@param outlen The length of the area to zero (octets)
*/
void zeromem(void *out, size_t outlen)
{
LTC_ARGCHKVD(out != NULL);
memset_func((void *)out, 0, outlen);
}
/* $Source$ */
/* $Revision$ */
/* $Date$ */