xref: /llvm-project/clang/test/SemaCXX/declspec-selectany.cpp (revision b00a49d1b3a146b02d2277a463ef7618a9c29806)
1*b00a49d1SReid Kleckner // RUN: %clang_cc1 -std=c++14 %s -triple x86_64-windows-msvc -fdeclspec -verify
2*b00a49d1SReid Kleckner // RUN: %clang_cc1 -std=c++17 %s -triple x86_64-windows-msvc -fdeclspec -verify
3*b00a49d1SReid Kleckner // RUN: %clang_cc1 -std=c++14 %s -triple x86_64-scei-ps4 -fdeclspec -verify
4*b00a49d1SReid Kleckner 
5*b00a49d1SReid Kleckner // MSVC emits this error too.
6*b00a49d1SReid Kleckner const int __declspec(selectany) test1 = 0; // expected-error {{'selectany' can only be applied to data items with external linkage}}
7*b00a49d1SReid Kleckner 
8*b00a49d1SReid Kleckner extern const int test2;
9*b00a49d1SReid Kleckner const int test2 = 42; // expected-note {{previous definition is here}}
10*b00a49d1SReid Kleckner extern __declspec(selectany) const int test2; // expected-warning {{attribute declaration must precede definition}}
11*b00a49d1SReid Kleckner 
12*b00a49d1SReid Kleckner extern const int test3;
13*b00a49d1SReid Kleckner const int __declspec(selectany) test3 = 42; // Standard usage.
14*b00a49d1SReid Kleckner 
15*b00a49d1SReid Kleckner struct Test4 {
16*b00a49d1SReid Kleckner   static constexpr int sdm = 0;
17*b00a49d1SReid Kleckner };
18*b00a49d1SReid Kleckner __declspec(selectany) constexpr int Test4::sdm; // no warning
19