26 lines · cpp
1// RUN: %clang_cc1 %s -fsyntax-only -verify=expected,cpp2// RUN: %clang_cc1 -x c %s -fsyntax-only -verify=expected,c3 4// Ensure that we correctly parse _Alignas as an extension in C++.5_Alignas(64) int i1;6_Alignas(long long) int i2;7int volatile _Alignas(64) i3; // Test strange ordering8 9void foo(void) {10 // We previously rejected these valid declarations.11 _Alignas(8) char i4;12 _Alignas(char) char i5;13 14 (void)(int _Alignas(64))0; // expected-warning {{'_Alignas' attribute ignored when parsing type}}15 // FIXME: C and C++ should both diagnose the same way, as being ignored.16 (void)(_Alignas(64) int)0; // c-error {{expected expression}} \17 cpp-warning {{'_Alignas' attribute ignored when parsing type}}18}19 20struct S {21 _Alignas(int) int i;22 _Alignas(64) int j;23};24 25void bar(_Alignas(8) char c1, char _Alignas(char) c2); // expected-error 2 {{'_Alignas' attribute cannot be applied to a function parameter}}26