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, c++11 10 11 // <functional> 12 13 // equal_to, not_equal_to, less, et al. 14 15 // Test that these types can be constructed w/o an initializer in a constexpr 16 // context. This is specifically testing gcc.gnu.org/PR83921 17 18 19 #include <functional> 20 #include "test_macros.h" 21 22 template <class T> test_constexpr_context()23constexpr bool test_constexpr_context() { 24 std::equal_to<T> eq; 25 ((void)eq); 26 std::not_equal_to<T> neq; 27 ((void)neq); 28 std::less<T> l; 29 ((void)l); 30 std::less_equal<T> le; 31 ((void)le); 32 std::greater<T> g; 33 ((void)g); 34 std::greater_equal<T> ge; 35 ((void)ge); 36 return true; 37 } 38 39 static_assert(test_constexpr_context<int>(), ""); 40 static_assert(test_constexpr_context<void>(), ""); 41 42 main(int,char **)43int main(int, char**) { 44 45 46 return 0; 47 } 48