1 // RUN: %clang_cc1 -fsyntax-only -verify=expected -std=c++23 -Wall %s
2 // RUN: %clang_cc1 -fsyntax-only -verify=expected,expected-cxx20 -std=c++20 -Wall %s
3
4 namespace ns {
5 int i;
6 enum class e {};
7 }
f()8 void f() {
9
10 for (using foo = int;true;); //expected-cxx20-warning {{alias declaration in this context is a C++23 extension}}
11
12 switch(using foo = int; 0) { //expected-cxx20-warning {{alias declaration in this context is a C++23 extension}}
13 case 0: break;
14 }
15
16 if(using foo = int; false) {} //expected-cxx20-warning {{alias declaration in this context is a C++23 extension}}
17
18
19 if (using enum ns::e; false){} // expected-error {{expected '='}}
20
21 for (using ns::i; true;); // expected-error {{expected '='}}
22
23 if (using ns::i; false){} // expected-error {{expected '='}}
24
25 switch(using ns::i; 0) { // expected-error {{expected '='}}
26 case 0: break;
27 }
28
29 }
30