Handle platform differences in gmtime_s
MSVC and C11 specify different arguments and return value
meaning for gmtime_s.
@@ -74,6 +74,7 @@ void mbedtls_platform_zeroize( void *buf, size_t len )
#endif /* MBEDTLS_PLATFORM_ZEROIZE_ALT */
#if defined(MBEDTLS_HAVE_TIME_DATE) && !defined(MBEDTLS_PLATFORM_GMTIME_R_ALT)
+#define __STDC_WANT_LIB_EXT1__ 1
#include <time.h>
#if !defined(_WIN32) && (defined(unix) || \
defined(__unix) || defined(__unix__) || (defined(__APPLE__) && \
@@ -105,7 +106,12 @@ struct tm *mbedtls_platform_gmtime_r( const mbedtls_time_t *tt,
struct tm *tm_buf )
{
#if defined(_WIN32) && !defined(PLATFORM_UTIL_USE_GMTIME)
+#if defined(__STDC_LIB_EXT1__)
+ return( ( gmtime_s( tt, tm_buf ) == 0 ) ? NULL : tm_buf );
+#else
+ /* MSVC and mingw64 argument order and return value are inconsistent with the C11 standard */
return( ( gmtime_s( tm_buf, tt ) == 0 ) ? tm_buf : NULL );
+#endif
#elif !defined(PLATFORM_UTIL_USE_GMTIME)
return( gmtime_r( tt, tm_buf ) );
#else
