1 // RUN: %clang_cc1 -std=c++11 -verify -fcxx-exceptions %s
2
a()3 [[noreturn]] void a() {
4 return; // expected-warning {{function 'a' declared 'noreturn' should not return}}
5 }
a2()6 void a2 [[noreturn]] () {
7 return; // expected-warning {{function 'a2' declared 'noreturn' should not return}}
8 }
9
b()10 [[noreturn, noreturn]] void b() { throw 0; } // expected-error {{attribute 'noreturn' cannot appear multiple times in an attribute specifier}}
b2()11 [[noreturn]] [[noreturn]] void b2() { throw 0; } // ok
12
13 [[noreturn()]] void c(); // expected-error {{attribute 'noreturn' cannot have an argument list}}
14
15 void d() [[noreturn]]; // expected-error {{'noreturn' attribute cannot be applied to types}}
16 int d2 [[noreturn]]; // expected-error {{'noreturn' attribute only applies to functions}}
17
e()18 [[noreturn]] int e() { b2(); } // ok
19
20 int f(); // expected-note {{declaration missing '[[noreturn]]' attribute is here}}
21 [[noreturn]] int f(); // expected-error {{function declared '[[noreturn]]' after its first declaration}}
22 int f();
23
24 [[noreturn]] int g();
g()25 int g() { while (true) b(); } // ok
26 [[noreturn]] int g();
27
28 [[gnu::noreturn]] int h();
29
test_type(T)30 template<typename T> void test_type(T) { T::error; } // expected-error {{has no members}}
test_type(int (*)())31 template<> void test_type(int (*)()) {}
32
check()33 void check() {
34 // We do not consider [[noreturn]] to be part of the function's type.
35 // However, we do treat [[gnu::noreturn]] as being part of the type.
36 //
37 // This isn't quite GCC-compatible; it treats [[gnu::noreturn]] as
38 // being part of a function *pointer* type, but not being part of
39 // a function type.
40 test_type(e);
41 test_type(f);
42 test_type(g);
43 test_type(h); // expected-note {{instantiation}}
44 }
45