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has
attribute.h
#ifndef RBIMPL_HAS_ATTRIBUTE_H /*-*-C++-*-vi:se ft=cpp:*/ #define RBIMPL_HAS_ATTRIBUTE_H /** * @file * @author Ruby developers <ruby-core@ruby-lang.org> * @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. * @warning Symbols prefixed with either `RBIMPL` or `rbimpl` are * implementation details. Don't take them as canon. They could * rapidly appear then vanish. The name (path) of this header file * is also an implementation detail. Do not expect it to persist * at the place it is now. Developers are free to move it anywhere * anytime at will. * @note To ruby-core: remember that this header can be possibly * recursively included from extension libraries written in C++. * Do not expect for instance `__VA_ARGS__` is always available. * We assume C99 for ruby itself but we don't assume languages of * extension libraries. They could be written in C++98. * @brief Defines #RBIMPL_HAS_ATTRIBUTE. */ #include "ruby/internal/config.h" #include "ruby/internal/compiler_since.h" #if defined(__has_attribute) # if __has_attribute(pure) || RBIMPL_COMPILER_IS(GCC) # /* FreeBSD's <sys/cdefs.h> defines its own *broken* version of # * __has_attribute. Cygwin copied that content to be a victim of the # * broken-ness. We don't take them into account. */ # define RBIMPL_HAVE___HAS_ATTRIBUTE 1 # endif #endif /** Wraps (or simulates) `__has_attribute`. */ #if defined(RBIMPL_HAVE___HAS_ATTRIBUTE) # define RBIMPL_HAS_ATTRIBUTE(_) __has_attribute(_) #elif RBIMPL_COMPILER_IS(GCC) # /* GCC <= 4 lack __has_attribute predefined macro, while have attributes # * themselves. We can simulate the macro like the following: */ # define RBIMPL_HAS_ATTRIBUTE(_) (RBIMPL_HAS_ATTRIBUTE_ ## _) # define RBIMPL_HAS_ATTRIBUTE_aligned RBIMPL_COMPILER_SINCE(GCC, 0, 0, 0) # define RBIMPL_HAS_ATTRIBUTE_alloc_size RBIMPL_COMPILER_SINCE(GCC, 4, 3, 0) # define RBIMPL_HAS_ATTRIBUTE_artificial RBIMPL_COMPILER_SINCE(GCC, 4, 3, 0) # define RBIMPL_HAS_ATTRIBUTE_always_inline RBIMPL_COMPILER_SINCE(GCC, 3, 1, 0) # define RBIMPL_HAS_ATTRIBUTE_cdecl RBIMPL_COMPILER_SINCE(GCC, 0, 0, 0) # define RBIMPL_HAS_ATTRIBUTE_cold RBIMPL_COMPILER_SINCE(GCC, 4, 3, 0) # define RBIMPL_HAS_ATTRIBUTE_const RBIMPL_COMPILER_SINCE(GCC, 2, 6, 0) # define RBIMPL_HAS_ATTRIBUTE_deprecated RBIMPL_COMPILER_SINCE(GCC, 3, 1, 0) # define RBIMPL_HAS_ATTRIBUTE_dllexport RBIMPL_COMPILER_SINCE(GCC, 0, 0, 0) # define RBIMPL_HAS_ATTRIBUTE_dllimport RBIMPL_COMPILER_SINCE(GCC, 0, 0, 0) # define RBIMPL_HAS_ATTRIBUTE_error RBIMPL_COMPILER_SINCE(GCC, 4, 3, 0) # define RBIMPL_HAS_ATTRIBUTE_format RBIMPL_COMPILER_SINCE(GCC, 0, 0, 0) # define RBIMPL_HAS_ATTRIBUTE_hot RBIMPL_COMPILER_SINCE(GCC, 4, 3, 0) # define RBIMPL_HAS_ATTRIBUTE_leaf RBIMPL_COMPILER_SINCE(GCC, 4, 6, 0) # define RBIMPL_HAS_ATTRIBUTE_malloc RBIMPL_COMPILER_SINCE(GCC, 3, 0, 0) # define RBIMPL_HAS_ATTRIBUTE_no_address_safety_analysis RBIMPL_COMPILER_SINCE(GCC, 4, 8, 0) # define RBIMPL_HAS_ATTRIBUTE_no_sanitize_address RBIMPL_COMPILER_SINCE(GCC, 4, 8, 0) # define RBIMPL_HAS_ATTRIBUTE_no_sanitize_undefined RBIMPL_COMPILER_SINCE(GCC, 4, 9, 0) # define RBIMPL_HAS_ATTRIBUTE_noinline RBIMPL_COMPILER_SINCE(GCC, 3, 1, 0) # define RBIMPL_HAS_ATTRIBUTE_nonnull RBIMPL_COMPILER_SINCE(GCC, 3, 3, 0) # define RBIMPL_HAS_ATTRIBUTE_noreturn RBIMPL_COMPILER_SINCE(GCC, 2, 5, 0) # define RBIMPL_HAS_ATTRIBUTE_nothrow RBIMPL_COMPILER_SINCE(GCC, 3, 3, 0) # define RBIMPL_HAS_ATTRIBUTE_pure RBIMPL_COMPILER_SINCE(GCC, 2,96, 0) # define RBIMPL_HAS_ATTRIBUTE_returns_nonnull RBIMPL_COMPILER_SINCE(GCC, 4, 9, 0) # define RBIMPL_HAS_ATTRIBUTE_returns_twice RBIMPL_COMPILER_SINCE(GCC, 4, 1, 0) # define RBIMPL_HAS_ATTRIBUTE_stdcall RBIMPL_COMPILER_SINCE(GCC, 0, 0, 0) # define RBIMPL_HAS_ATTRIBUTE_unused RBIMPL_COMPILER_SINCE(GCC, 0, 0, 0) # define RBIMPL_HAS_ATTRIBUTE_visibility RBIMPL_COMPILER_SINCE(GCC, 3, 3, 0) # define RBIMPL_HAS_ATTRIBUTE_warn_unused_result RBIMPL_COMPILER_SINCE(GCC, 3, 4, 0) # define RBIMPL_HAS_ATTRIBUTE_warning RBIMPL_COMPILER_SINCE(GCC, 4, 3, 0) # define RBIMPL_HAS_ATTRIBUTE_weak RBIMPL_COMPILER_SINCE(GCC, 0, 0, 0) # /* Note that "0, 0, 0" might be inaccurate. */ #elif RBIMPL_COMPILER_IS(SunPro) # /* Oracle Solaris Studio 12.4 (cc version 5.11) introduced __has_attribute. # * Before that, following attributes were available. */ # /* See https://docs.oracle.com/cd/F24633_01/index.html */ # define RBIMPL_HAS_ATTRIBUTE(_) (RBIMPL_HAS_ATTRIBUTE_ ## _) # define RBIMPL_HAS_ATTRIBUTE_alias RBIMPL_COMPILER_SINCE(SunPro, 5, 9, 0) # define RBIMPL_HAS_ATTRIBUTE_aligned RBIMPL_COMPILER_SINCE(SunPro, 5, 9, 0) # define RBIMPL_HAS_ATTRIBUTE_always_inline RBIMPL_COMPILER_SINCE(SunPro, 5, 10, 0) # define RBIMPL_HAS_ATTRIBUTE_const RBIMPL_COMPILER_SINCE(SunPro, 5, 9, 0) # define RBIMPL_HAS_ATTRIBUTE_constructor RBIMPL_COMPILER_SINCE(SunPro, 5, 9, 0) # define RBIMPL_HAS_ATTRIBUTE_destructor RBIMPL_COMPILER_SINCE(SunPro, 5, 9, 0) # define RBIMPL_HAS_ATTRIBUTE_malloc RBIMPL_COMPILER_SINCE(SunPro, 5, 9, 0) # define RBIMPL_HAS_ATTRIBUTE_noinline RBIMPL_COMPILER_SINCE(SunPro, 5, 9, 0) # define RBIMPL_HAS_ATTRIBUTE_noreturn RBIMPL_COMPILER_SINCE(SunPro, 5, 9, 0) # define RBIMPL_HAS_ATTRIBUTE_packed RBIMPL_COMPILER_SINCE(SunPro, 5, 9, 0) # define RBIMPL_HAS_ATTRIBUTE_pure RBIMPL_COMPILER_SINCE(SunPro, 5, 9, 0) # define RBIMPL_HAS_ATTRIBUTE_returns_twice RBIMPL_COMPILER_SINCE(SunPro, 5, 10, 0) # define RBIMPL_HAS_ATTRIBUTE_vector_size RBIMPL_COMPILER_SINCE(SunPro, 5, 10, 0) # define RBIMPL_HAS_ATTRIBUTE_visibility RBIMPL_COMPILER_SINCE(SunPro, 5, 9, 0) # define RBIMPL_HAS_ATTRIBUTE_weak RBIMPL_COMPILER_SINCE(SunPro, 5, 9, 0) #elif defined (_MSC_VER) # define RBIMPL_HAS_ATTRIBUTE(_) 0 # /* Fallback below doesn't work: see win32/Makefile.sub */ #else # /* Take config.h definition when available. */ # define RBIMPL_HAS_ATTRIBUTE(_) ((RBIMPL_HAS_ATTRIBUTE_ ## _)+0) # ifdef ALWAYS_INLINE # define RBIMPL_HAS_ATTRIBUTE_always_inline 1 # endif # ifdef FUNC_CDECL # define RBIMPL_HAS_ATTRIBUTE_cdecl 1 # endif # ifdef CONSTFUNC # define RBIMPL_HAS_ATTRIBUTE_const 1 # endif # ifdef DEPRECATED # define RBIMPL_HAS_ATTRIBUTE_deprecated 1 # endif # ifdef ERRORFUNC # define RBIMPL_HAS_ATTRIBUTE_error 1 # endif # ifdef FUNC_FASTCALL # define RBIMPL_HAS_ATTRIBUTE_fastcall 1 # endif # ifdef PUREFUNC # define RBIMPL_HAS_ATTRIBUTE_pure 1 # endif # ifdef NO_ADDRESS_SAFETY_ANALYSIS # define RBIMPL_HAS_ATTRIBUTE_no_address_safety_analysis 1 # endif # ifdef NO_SANITIZE # define RBIMPL_HAS_ATTRIBUTE_no_sanitize 1 # endif # ifdef NO_SANITIZE_ADDRESS # define RBIMPL_HAS_ATTRIBUTE_no_sanitize_address 1 # endif # ifdef NOINLINE # define RBIMPL_HAS_ATTRIBUTE_noinline 1 # endif # ifdef RBIMPL_FUNC_NONNULL # define RBIMPL_HAS_ATTRIBUTE_nonnull 1 # endif # ifdef NORETURN # define RBIMPL_HAS_ATTRIBUTE_noreturn 1 # endif # ifdef FUNC_OPTIMIZED # define RBIMPL_HAS_ATTRIBUTE_optimize 1 # endif # ifdef FUNC_STDCALL # define RBIMPL_HAS_ATTRIBUTE_stdcall 1 # endif # ifdef MAYBE_UNUSED # define RBIMPL_HAS_ATTRIBUTE_unused 1 # endif # ifdef WARN_UNUSED_RESULT # define RBIMPL_HAS_ATTRIBUTE_warn_unused_result 1 # endif # ifdef WARNINGFUNC # define RBIMPL_HAS_ATTRIBUTE_warning 1 # endif # ifdef WEAK # define RBIMPL_HAS_ATTRIBUTE_weak 1 # endif #endif #endif /* RBIMPL_HAS_ATTRIBUTE_H */
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