diff options
Diffstat (limited to 'internal/compilers.h')
| -rw-r--r-- | internal/compilers.h | 99 |
1 files changed, 94 insertions, 5 deletions
diff --git a/internal/compilers.h b/internal/compilers.h index 697bad5f4e..5a9e566e71 100644 --- a/internal/compilers.h +++ b/internal/compilers.h @@ -10,22 +10,111 @@ * file COPYING are met. Consult the file for details. */ -#ifndef MAYBE_UNUSED -# define MAYBE_UNUSED(x) x +#include "ruby/defines.h" /* for GCC_VERSION_SINCE */ + +#ifdef _MSC_VER +# define MSC_VERSION_SINCE(_) (_MSC_VER >= _) +# define MSC_VERSION_BEFORE(_) (_MSC_VER < _) +#else +# define MSC_VERSION_SINCE(_) 0 +# define MSC_VERSION_BEFORE(_) 0 #endif -#ifndef WARN_UNUSED_RESULT -# define WARN_UNUSED_RESULT(x) x +#ifndef __has_attribute +# define __has_attribute(...) __has_attribute_##__VA_ARGS__ +# /* GCC <= 4 lacks __has_attribute predefined macro, while has attributes +# * themselves. We can simulate the macro like the following: */ +# define __has_attribute_aligned GCC_VERSION_SINCE(0, 0, 0) +# define __has_attribute_alloc_size GCC_VERSION_SINCE(4, 3, 0) +# define __has_attribute_artificial GCC_VERSION_SINCE(4, 3, 0) +# define __has_attribute_always_inline GCC_VERSION_SINCE(3, 1, 0) +# define __has_attribute_cdecl GCC_VERSION_SINCE(0, 0, 0) +# define __has_attribute_cold GCC_VERSION_SINCE(4, 3, 0) +# define __has_attribute_const GCC_VERSION_SINCE(2, 6, 0) +# define __has_attribute_deprecated GCC_VERSION_SINCE(3, 1, 0) +# define __has_attribute_dllexport GCC_VERSION_SINCE(0, 0, 0) +# define __has_attribute_dllimport GCC_VERSION_SINCE(0, 0, 0) +# define __has_attribute_error GCC_VERSION_SINCE(4, 3, 0) +# define __has_attribute_format GCC_VERSION_SINCE(0, 0, 0) +# define __has_attribute_hot GCC_VERSION_SINCE(4, 3, 0) +# define __has_attribute_leaf GCC_VERSION_SINCE(4, 6, 0) +# define __has_attribute_malloc GCC_VERSION_SINCE(3, 0, 0) +# define __has_attribute_no_address_safety_analysis GCC_VERSION_SINCE(4, 8, 0) +# define __has_attribute_no_sanitize_address GCC_VERSION_SINCE(4, 8, 0) +# define __has_attribute_no_sanitize_undefined GCC_VERSION_SINCE(4, 9, 0) +# define __has_attribute_noinline GCC_VERSION_SINCE(3, 1, 0) +# define __has_attribute_nonnull GCC_VERSION_SINCE(3, 3, 0) +# define __has_attribute_noreturn GCC_VERSION_SINCE(2, 5, 0) +# define __has_attribute_nothrow GCC_VERSION_SINCE(3, 3, 0) +# define __has_attribute_pure GCC_VERSION_SINCE(2, 96, 0) +# define __has_attribute_returns_nonnull GCC_VERSION_SINCE(4, 9, 0) +# define __has_attribute_returns_twice GCC_VERSION_SINCE(4, 1, 0) +# define __has_attribute_stdcall GCC_VERSION_SINCE(0, 0, 0) +# define __has_attribute_unused GCC_VERSION_SINCE(0, 0, 0) +# define __has_attribute_visibility GCC_VERSION_SINCE(3, 3, 0) +# define __has_attribute_visibility GCC_VERSION_SINCE(3, 3, 0) +# define __has_attribute_warn_unused_result GCC_VERSION_SINCE(3, 4, 0) +# define __has_attribute_warning GCC_VERSION_SINCE(4, 3, 0) +# define __has_attribute_weak GCC_VERSION_SINCE(0, 0, 0) +# /* Note that 0,0,0 might be inaccurate. */ +#endif + +#ifndef __has_c_attribute +# /* As of writing everything that lacks __has_c_attribute also completely +# * lacks C2x attributes as well. Might change in future? */ +# define __has_c_attribute(...) 0 +#endif + +#ifndef __has_declspec_attribute +# define __has_declspec_attribute(...) __has_declspec_attribute_##__VA_ARGS__ +# define __has_declspec_attribute_align MSC_VERSION_SINCE( 800) +# define __has_declspec_attribute_deprecated MSC_VERSION_SINCE(1300) +# define __has_declspec_attribute_dllexport MSC_VERSION_SINCE( 800) +# define __has_declspec_attribute_dllimport MSC_VERSION_SINCE( 800) +# define __has_declspec_attribute_noalias MSC_VERSION_SINCE( 800) +# define __has_declspec_attribute_noinline MSC_VERSION_SINCE(1300) +# define __has_declspec_attribute_noreturn MSC_VERSION_SINCE(1100) +# define __has_declspec_attribute_nothrow MSC_VERSION_SINCE( 800) +# define __has_declspec_attribute_restrict MSC_VERSION_SINCE( 800) +# /* Note that 800 might be inaccurate. */ +#endif + +#ifndef __has_builtin +# /* :FIXME: Historically GCC has had tons of builtins, but it implemented +# * __has_builtin only since GCC 10. This section can be made more +# * granular. */ +# /* https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66970 */ +# define __has_builtin(...) GCC_VERSION_SINCE(0, 0, 0) #endif #ifndef __has_feature -# define __has_feature(x) 0 +# define __has_feature(...) 0 #endif #ifndef __has_extension +# /* Pre-3.0 clang had __has_feature but not __has_extension. */ # define __has_extension __has_feature #endif +#ifndef __has_warning +# /* We cannot simulate __has_warning like the ones above, because it takes +# * string liteals (we can stringize a macro arugment but there is no such +# * thing like an unquote of strrings). */ +# define __has_warning(...) 0 +#endif + +#ifndef __GNUC__ +# define __extension__ /* void */ +#endif + +#ifndef MAYBE_UNUSED +# define MAYBE_UNUSED(x) x +#endif + +#ifndef WARN_UNUSED_RESULT +# define WARN_UNUSED_RESULT(x) x +#endif + #define RB_OBJ_BUILTIN_TYPE(obj) rb_obj_builtin_type(obj) #define OBJ_BUILTIN_TYPE(obj) RB_OBJ_BUILTIN_TYPE(obj) #ifdef __GNUC__ |