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Improve explicit_bzero detection

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Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
This commit is contained in:
Dave Rodgman 2023-02-25 15:19:52 +00:00
parent fe57a2e008
commit 703f805f09
1 changed files with 8 additions and 0 deletions
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8
library/platform_util.c
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@ -26,6 +26,11 @@
#define _POSIX_C_SOURCE 200112L #define _POSIX_C_SOURCE 200112L
#endif #endif
#if !defined (_GNU_SOURCE)
/* Clang requires this to get support for explicit_bzero */
#define _GNU_SOURCE
#endif
#include "common.h" #include "common.h"
#include "mbedtls/platform_util.h" #include "mbedtls/platform_util.h"
@ -84,7 +89,10 @@
* mbedtls_platform_zeroize() to use a suitable implementation for their * mbedtls_platform_zeroize() to use a suitable implementation for their
* platform and needs. * platform and needs.
*/ */
#if !defined(MBEDTLS_PLATFORM_HAS_EXPLICIT_BZERO) && !defined(__STDC_LIB_EXT1__) \
&& !defined(_WIN32)
static void *(*const volatile memset_func)(void *, int, size_t) = memset; static void *(*const volatile memset_func)(void *, int, size_t) = memset;
#endif
void mbedtls_platform_zeroize(void *buf, size_t len) void mbedtls_platform_zeroize(void *buf, size_t len)
{ {