c1648f2bfd
Summary: The main effect is that clang now accepts the following conforming C11 code with MSVC headers: #include <assert.h> static_assert(1, "true"); This is a non-conforming extension (the keyword is outside the implementer's namespace), so it is placed under -fms-compatibility instead of -fms-extensions like most MSVC-specific keyword extensions. Normally, in C11, the compiler is supposed to provide the _Static_assert keyword, and assert.h should define static_assert to _Static_assert. However, that is not what MSVC does, and MSVC doesn't even provide _Static_assert. This also has the less important side effect of enabling static_assert in C++98 mode with -fms-compatibility. It's exceptionally difficult to use modern MSVC headers without C++14 even, so this is relatively unimportant. Fixes PR26672 Patch by Andrey Bokhanko! Reviewers: rsmith, thakis Subscribers: cfe-commits, STL_MSFT Differential Revision: https://reviews.llvm.org/D17444 llvm-svn: 354162
74 lines
2.6 KiB
C++
74 lines
2.6 KiB
C++
// RUN: %clang_cc1 -std=c++03 -fsyntax-only %s
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// RUN: %clang_cc1 -std=c++11 -DCXX11 -fsyntax-only %s
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// RUN: %clang_cc1 -std=c++14 -fconcepts-ts -DCXX11 -DCONCEPTS -fsyntax-only %s
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// RUN: %clang_cc1 -std=c++2a -DCXX11 -DCXX2A -fsyntax-only %s
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// RUN: %clang_cc1 -std=c++03 -fdeclspec -DDECLSPEC -fsyntax-only %s
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// RUN: %clang_cc1 -std=c++03 -fms-extensions -DDECLSPEC -fsyntax-only %s
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// RUN: %clang_cc1 -std=c++03 -fborland-extensions -DDECLSPEC -fsyntax-only %s
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// RUN: %clang_cc1 -std=c++03 -fms-extensions -fno-declspec -fsyntax-only %s
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// RUN: %clang_cc1 -std=c++03 -fborland-extensions -fno-declspec -fsyntax-only %s
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// RUN: %clang_cc1 -std=c++03 -fno-declspec -fdeclspec -DDECLSPEC -fsyntax-only %s
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// RUN: %clang_cc1 -std=c++03 -fdeclspec -fno-declspec -fsyntax-only %s
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// RUN: %clang_cc1 -std=c++03 -fms-extensions -fno-declspec -fdeclspec -DDECLSPEC -fsyntax-only %s
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// RUN: %clang_cc1 -std=c++03 -fms-extensions -fdeclspec -fno-declspec -fsyntax-only %s
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// RUN: %clang -std=c++03 -target i686-windows-msvc -DMS -DDECLSPEC -fsyntax-only %s
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// RUN: %clang -std=c++03 -target x86_64-scei-ps4 -DDECLSPEC -fsyntax-only %s
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// RUN: %clang -std=c++03 -target i686-windows-msvc -DMS -fno-declspec -fsyntax-only %s
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// RUN: %clang -std=c++03 -target x86_64-scei-ps4 -fno-declspec -fsyntax-only %s
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#define IS_KEYWORD(NAME) _Static_assert(!__is_identifier(NAME), #NAME)
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#define NOT_KEYWORD(NAME) _Static_assert(__is_identifier(NAME), #NAME)
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#define IS_TYPE(NAME) void is_##NAME##_type() { int f(NAME); }
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#if defined(CONCEPTS) || defined(CXX2A)
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#define CONCEPTS_KEYWORD(NAME) IS_KEYWORD(NAME)
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#else
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#define CONCEPTS_KEYWORD(NAME) NOT_KEYWORD(NAME)
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#endif
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#ifdef DECLSPEC
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#define DECLSPEC_KEYWORD(NAME) IS_KEYWORD(NAME)
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#else
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#define DECLSPEC_KEYWORD(NAME) NOT_KEYWORD(NAME)
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#endif
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#ifdef CXX11
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#define CXX11_KEYWORD(NAME) IS_KEYWORD(NAME)
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#define CXX11_TYPE(NAME) IS_TYPE(NAME)
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#else
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#define CXX11_KEYWORD(NAME) NOT_KEYWORD(NAME)
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#define CXX11_TYPE(NAME)
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#endif
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// C++11 keywords
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CXX11_KEYWORD(nullptr);
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CXX11_KEYWORD(decltype);
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CXX11_KEYWORD(alignof);
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CXX11_KEYWORD(alignas);
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CXX11_KEYWORD(char16_t);
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CXX11_TYPE(char16_t);
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CXX11_KEYWORD(char32_t);
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CXX11_TYPE(char32_t);
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CXX11_KEYWORD(constexpr);
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CXX11_KEYWORD(noexcept);
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#ifndef MS
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CXX11_KEYWORD(static_assert);
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#else
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// MS compiler recognizes static_assert in all modes. So should we.
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IS_KEYWORD(static_assert);
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#endif
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CXX11_KEYWORD(thread_local);
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// Concepts TS keywords
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CONCEPTS_KEYWORD(concept);
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CONCEPTS_KEYWORD(requires);
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// __declspec extension
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DECLSPEC_KEYWORD(__declspec);
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// Clang extension
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IS_KEYWORD(__char16_t);
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IS_TYPE(__char16_t);
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IS_KEYWORD(__char32_t);
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IS_TYPE(__char32_t);
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