c44c174246
Currently, we only accept clang as the scoped attribute identifier for double square bracket attributes provided by Clang, but this has the potential to conflict with user-defined macros. To help alleviate these concerns, this introduces the _Clang scoped attribute identifier as an alias for clang. It also introduces a warning with a fixit on the off chance someone attempts to use __clang__ as the scoped attribute (which is a predefined compiler identification macro). llvm-svn: 346521
99 lines
2.6 KiB
C++
99 lines
2.6 KiB
C++
// RUN: %clang_cc1 -triple i386-unknown-unknown -fms-compatibility -std=c++11 -E %s -o - | FileCheck %s
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// CHECK: has_cxx11_carries_dep
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#if __has_cpp_attribute(carries_dependency)
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int has_cxx11_carries_dep();
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#endif
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// CHECK: has_clang_fallthrough_1
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#if __has_cpp_attribute(clang::fallthrough)
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int has_clang_fallthrough_1();
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#endif
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// CHECK: does_not_have_selectany
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#if !__has_cpp_attribute(selectany)
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int does_not_have_selectany();
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#endif
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// The attribute name can be bracketed with double underscores.
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// CHECK: has_clang_fallthrough_2
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#if __has_cpp_attribute(clang::__fallthrough__)
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int has_clang_fallthrough_2();
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#endif
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// The scope cannot be bracketed with double underscores unless it is
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// for gnu or clang.
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// CHECK: does_not_have___gsl___suppress
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#if !__has_cpp_attribute(__gsl__::suppress)
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int does_not_have___gsl___suppress();
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#endif
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// We do somewhat support the __clang__ vendor namespace, but it is a
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// predefined macro and thus we encourage users to use _Clang instead.
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// Because of this, we do not support __has_cpp_attribute for that
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// vendor namespace.
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// CHECK: does_not_have___clang___fallthrough
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#if !__has_cpp_attribute(__clang__::fallthrough)
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int does_not_have___clang___fallthrough();
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#endif
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// CHECK: does_have_Clang_fallthrough
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#if __has_cpp_attribute(_Clang::fallthrough)
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int does_have_Clang_fallthrough();
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#endif
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// CHECK: has_gnu_const
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#if __has_cpp_attribute(__gnu__::__const__)
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int has_gnu_const();
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#endif
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// Test that C++11, target-specific attributes behave properly.
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// CHECK: does_not_have_mips16
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#if !__has_cpp_attribute(gnu::mips16)
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int does_not_have_mips16();
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#endif
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// Test that the version numbers of attributes listed in SD-6 are supported
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// correctly.
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// CHECK: has_cxx11_carries_dep_vers
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#if __has_cpp_attribute(carries_dependency) == 200809
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int has_cxx11_carries_dep_vers();
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#endif
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// CHECK: has_cxx11_noreturn_vers
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#if __has_cpp_attribute(noreturn) == 200809
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int has_cxx11_noreturn_vers();
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#endif
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// CHECK: has_cxx14_deprecated_vers
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#if __has_cpp_attribute(deprecated) == 201309
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int has_cxx14_deprecated_vers();
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#endif
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// CHECK: has_cxx1z_nodiscard
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#if __has_cpp_attribute(nodiscard) == 201603
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int has_cxx1z_nodiscard();
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#endif
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// CHECK: has_cxx1z_fallthrough
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#if __has_cpp_attribute(fallthrough) == 201603
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int has_cxx1z_fallthrough();
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#endif
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// CHECK: has_declspec_uuid
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#if __has_declspec_attribute(uuid)
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int has_declspec_uuid();
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#endif
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// CHECK: has_declspec_uuid2
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#if __has_declspec_attribute(__uuid__)
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int has_declspec_uuid2();
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#endif
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// CHECK: does_not_have_declspec_fallthrough
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#if !__has_declspec_attribute(fallthrough)
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int does_not_have_declspec_fallthrough();
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#endif
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