diff options
Diffstat (limited to 'internal/static_assert.h')
| -rw-r--r-- | internal/static_assert.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/internal/static_assert.h b/internal/static_assert.h new file mode 100644 index 0000000000..05b79b4ba3 --- /dev/null +++ b/internal/static_assert.h @@ -0,0 +1,21 @@ +#ifndef INTERNAL_STATIC_ASSERT_H /* -*- C -*- */ +#define INTERNAL_STATIC_ASSERT_H +/** + * @file + * @brief C11 shim for _Static_assert. + * @author \@shyouhei + * @copyright This file is a part of the programming language Ruby. + * Permission is hereby granted, to either redistribute and/or + * modify this file, provided that the conditions mentioned in the + * file COPYING are met. Consult the file for details. + */ + +#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L) +# define STATIC_ASSERT(name, expr) _Static_assert(expr, #name ": " #expr) +#elif GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert) +# define STATIC_ASSERT(name, expr) RB_GNUC_EXTENSION _Static_assert(expr, #name ": " #expr) +#else +# define STATIC_ASSERT(name, expr) typedef int static_assert_##name##_check[1 - 2*!(expr)] +#endif + +#endif /* INTERNAL_STATIC_ASSERT_H */ |