diff options
Diffstat (limited to 'Compat.h')
| -rw-r--r-- | Compat.h | 27 |
1 files changed, 24 insertions, 3 deletions
@@ -7,10 +7,9 @@ Released under the GNU GPLv2+, see the COPYING file in the source distribution for its full text. */ -#include "config.h" // IWYU pragma: keep - +#include <assert.h> // IWYU pragma: keep #include <fcntl.h> -#include <stddef.h> +#include <stddef.h> // IWYU pragma: keep #include <unistd.h> #include <sys/stat.h> // IWYU pragma: keep @@ -61,4 +60,26 @@ ssize_t Compat_readlink(openat_arg_t dirfd, char* buf, size_t bufsize); +/* + * static_assert() hack for pre-C11 + * TODO: drop after moving to -std=c11 or newer + */ + +/* C11 guarantees _Static_assert is a keyword */ +#if (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) < 201112L +# if !defined(_Static_assert) +# define _Static_assert(expr, msg) \ + extern int (*__Static_assert_function (void)) \ + [!!sizeof (struct { int __error_if_negative: (expr) ? 2 : -1; })] +# endif +#endif + +/* C23 will guarantee static_assert is a keyword or a macro */ +/* FIXME: replace 202300L with proper value once C23 is published */ +#if (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) < 202300L +# if !defined(static_assert) +# define static_assert(expr, msg) _Static_assert(expr, msg) +# endif +#endif + #endif /* HEADER_Compat */ |