ef2c8274df
DR2390 clarifies that the argument to __has_cpp_attribute() needs to be macro-expanded. Clang already supports this and tests it explicitly in clang/test/Preprocessor/has_attribute.cpp. Copy the test over to clang/test/CXX/drs/ so the make_cxx_drs script picks it up. Differential Revision: https://reviews.llvm.org/D119230
48 lines
1016 B
C++
48 lines
1016 B
C++
// RUN: %clang_cc1 -E -P %s -o - | FileCheck %s
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// dr2390: yes
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namespace PR48462 {
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// Test that macro expansion of the builtin argument works.
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#define C clang
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#define F fallthrough
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#define CF clang::fallthrough
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#if __has_cpp_attribute(F)
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int has_fallthrough;
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#endif
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// CHECK: int has_fallthrough;
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#if __has_cpp_attribute(C::F)
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int has_clang_fallthrough_1;
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#endif
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// CHECK: int has_clang_fallthrough_1;
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#if __has_cpp_attribute(clang::F)
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int has_clang_fallthrough_2;
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#endif
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// CHECK: int has_clang_fallthrough_2;
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#if __has_cpp_attribute(C::fallthrough)
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int has_clang_fallthrough_3;
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#endif
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// CHECK: int has_clang_fallthrough_3;
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#if __has_cpp_attribute(CF)
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int has_clang_fallthrough_4;
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#endif
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// CHECK: int has_clang_fallthrough_4;
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#define FUNCLIKE1(x) clang::x
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#if __has_cpp_attribute(FUNCLIKE1(fallthrough))
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int funclike_1;
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#endif
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// CHECK: int funclike_1;
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#define FUNCLIKE2(x) _Clang::x
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#if __has_cpp_attribute(FUNCLIKE2(fallthrough))
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int funclike_2;
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#endif
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// CHECK: int funclike_2;
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} // namespace PR48462
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