diff options
Diffstat (limited to 'thirdparty/mbedtls/library/common.h')
| -rw-r--r-- | thirdparty/mbedtls/library/common.h | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/thirdparty/mbedtls/library/common.h b/thirdparty/mbedtls/library/common.h index 3936ffdfe1..7bb2674293 100644 --- a/thirdparty/mbedtls/library/common.h +++ b/thirdparty/mbedtls/library/common.h @@ -352,17 +352,19 @@ static inline void mbedtls_xor_no_simd(unsigned char *r, #endif /* Always provide a static assert macro, so it can be used unconditionally. - * It will expand to nothing on some systems. - * Can be used outside functions (but don't add a trailing ';' in that case: - * the semicolon is included here to avoid triggering -Wextra-semi when - * MBEDTLS_STATIC_ASSERT() expands to nothing). - * Can't use the C11-style `defined(static_assert)` on FreeBSD, since it + * It does nothing on systems where we don't know how to define a static assert. + */ +/* Can't use the C11-style `defined(static_assert)` on FreeBSD, since it * defines static_assert even with -std=c99, but then complains about it. */ #if defined(static_assert) && !defined(__FreeBSD__) -#define MBEDTLS_STATIC_ASSERT(expr, msg) static_assert(expr, msg); +#define MBEDTLS_STATIC_ASSERT(expr, msg) static_assert(expr, msg) #else -#define MBEDTLS_STATIC_ASSERT(expr, msg) +/* Make sure `MBEDTLS_STATIC_ASSERT(expr, msg);` is valid both inside and + * outside a function. We choose a struct declaration, which can be repeated + * any number of times and does not need a matching definition. */ +#define MBEDTLS_STATIC_ASSERT(expr, msg) \ + struct ISO_C_does_not_allow_extra_semicolon_outside_of_a_function #endif #if defined(__has_builtin) |