1 // RUN: %clang_cc1 -std=c11 -fsyntax-only -verify %s
2 // RUN: not %clang_cc1 -std=c99 -pedantic -fsyntax-only %s 2>&1 | FileCheck -check-prefix=CHECK-EXT %s
3 
4 _Noreturn int f();
5 int _Noreturn f(); // expected-note {{previous}}
6 int f _Noreturn(); // expected-error {{expected ';'}} expected-error 2{{}}
7 int f() _Noreturn; // expected-error {{'_Noreturn' keyword must precede function declarator}}
8 
9 _Noreturn char c1; // expected-error {{'_Noreturn' can only appear on functions}}
10 char _Noreturn c2; // expected-error {{'_Noreturn' can only appear on functions}}
11 
12 typedef _Noreturn int g(); // expected-error {{'_Noreturn' can only appear on functions}}
13 
14 _Noreturn int; // expected-error {{'_Noreturn' can only appear on functions}} expected-warning {{does not declare anything}}
15 _Noreturn struct S; // expected-error {{'_Noreturn' can only appear on functions}}
16 _Noreturn enum E { e }; // expected-error {{'_Noreturn' can only appear on functions}}
17 
18 // CHECK-EXT: _Noreturn functions are a C11-specific feature
19