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b00a49d1b3
Summary: This avoids a -Wignored-attribute warning on the code pattern Microsoft recommends for integral const static data members defined in headers here: https://docs.microsoft.com/en-us/cpp/build/reference/microsoft-extensions-to-c-and-cpp?view=vs-2019 The attribute is redundant, but it is necessary when compiling in C++14 modes with /Za, which disables MSVC's extension that treats such variables as implicitly inline. Fixes PR43270 Reviewers: epastor, thakis, hans Subscribers: cfe-commits Tags: #clang Differential Revision: https://reviews.llvm.org/D67426 llvm-svn: 371749
19 lines
813 B
C++
19 lines
813 B
C++
// RUN: %clang_cc1 -std=c++14 %s -triple x86_64-windows-msvc -fdeclspec -verify
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// RUN: %clang_cc1 -std=c++17 %s -triple x86_64-windows-msvc -fdeclspec -verify
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// RUN: %clang_cc1 -std=c++14 %s -triple x86_64-scei-ps4 -fdeclspec -verify
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// MSVC emits this error too.
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const int __declspec(selectany) test1 = 0; // expected-error {{'selectany' can only be applied to data items with external linkage}}
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extern const int test2;
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const int test2 = 42; // expected-note {{previous definition is here}}
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extern __declspec(selectany) const int test2; // expected-warning {{attribute declaration must precede definition}}
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extern const int test3;
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const int __declspec(selectany) test3 = 42; // Standard usage.
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struct Test4 {
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static constexpr int sdm = 0;
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};
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__declspec(selectany) constexpr int Test4::sdm; // no warning
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