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/* See LICENSE file for copyright and license details. */
#include "common.h"
#ifndef TEST
#if defined(__GNUC__)
# pragma GCC diagnostic ignored "-Wsuggest-attribute=const"
# pragma GCC diagnostic ignored "-Wsuggest-attribute=pure"
#endif
void *(*volatile librecrypt_explicit_memset_____)(void *, int, size_t) = &memset;
#if defined(__clang__) /* before __GNUC__ because that is also set in clang */
# if __has_attribute(optnone)
__attribute__((optnone))
# endif
#elif defined(__GNUC__)
# if __GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__ >= 40400
__attribute__((optimize("-O0")))
# endif
#endif
void
librecrypt_wipe(void *buffer, size_t size)
{
if (buffer && size) {
buffer = (*librecrypt_explicit_memset_____)(buffer, 0, size);
#if defined(__GNUC__)
__asm__ volatile ("" :: "g" (buffer) : "memory");
#else
(void) buffer;
#endif
}
}
#else
int
main(void)
{
char *buf;
SET_UP_ALARM();
#if defined(__GNUC__)
# pragma GCC diagnostic ignored "-Wnonnull"
#endif
librecrypt_wipe(NULL, 0u);
librecrypt_wipe(NULL, 4094u);
librecrypt_wipe((void *)(intptr_t)-1, 0u);
buf = malloc(256u);
memset(buf, 99, 256u);
librecrypt_wipe(buf, 256u);
free(buf); /* TODO should test memory is wiped */
return 0;
}
#endif
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