1 //===----------------------------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 // UNSUPPORTED: c++03 10 11 // <type_traits> 12 13 14 #include <type_traits> 15 #include <cassert> 16 17 #include "test_macros.h" 18 main(int,char **)19int main(int, char**) 20 { 21 #ifndef __cpp_lib_is_constant_evaluated 22 // expected-error@+1 {{no member named 'is_constant_evaluated' in namespace 'std'}} 23 bool b = std::is_constant_evaluated(); 24 #else 25 // expected-error@+1 {{static assertion failed}} 26 static_assert(!std::is_constant_evaluated(), ""); 27 // expected-warning@-1 0-1 {{'std::is_constant_evaluated' will always evaluate to 'true' in a manifestly constant-evaluated expression}} 28 #endif 29 return 0; 30 } 31