1decf22e5SEric Fiselier //===----------------------------------------------------------------------===// 2decf22e5SEric Fiselier // 3decf22e5SEric Fiselier // The LLVM Compiler Infrastructure 4decf22e5SEric Fiselier // 5decf22e5SEric Fiselier // This file is dual licensed under the MIT and the University of Illinois Open 6decf22e5SEric Fiselier // Source Licenses. See LICENSE.TXT for details. 7decf22e5SEric Fiselier // 8decf22e5SEric Fiselier //===----------------------------------------------------------------------===// 9decf22e5SEric Fiselier 10decf22e5SEric Fiselier // UNSUPPORTED: c++98, c++03, c++11 11decf22e5SEric Fiselier 12*6f14127eSEric Fiselier // XFAIL: gcc-7 13decf22e5SEric Fiselier 14decf22e5SEric Fiselier // <functional> 15decf22e5SEric Fiselier 16decf22e5SEric Fiselier // equal_to, not_equal_to, less, et al. 17decf22e5SEric Fiselier 18decf22e5SEric Fiselier // Test that these types can be constructed w/o an initializer in a constexpr 19decf22e5SEric Fiselier // context. This is specifically testing gcc.gnu.org/PR83921 20decf22e5SEric Fiselier 21decf22e5SEric Fiselier 22decf22e5SEric Fiselier #include <functional> 23decf22e5SEric Fiselier #include "test_macros.h" 24decf22e5SEric Fiselier 25decf22e5SEric Fiselier template <class T> 26decf22e5SEric Fiselier constexpr bool test_constexpr_context() { 27decf22e5SEric Fiselier std::equal_to<T> eq; 28decf22e5SEric Fiselier ((void)eq); 29decf22e5SEric Fiselier std::not_equal_to<T> neq; 30decf22e5SEric Fiselier ((void)neq); 31decf22e5SEric Fiselier std::less<T> l; 32decf22e5SEric Fiselier ((void)l); 33decf22e5SEric Fiselier std::less_equal<T> le; 34decf22e5SEric Fiselier ((void)le); 35decf22e5SEric Fiselier std::greater<T> g; 36decf22e5SEric Fiselier ((void)g); 37decf22e5SEric Fiselier std::greater_equal<T> ge; 38decf22e5SEric Fiselier ((void)ge); 39decf22e5SEric Fiselier return true; 40decf22e5SEric Fiselier } 41decf22e5SEric Fiselier 42decf22e5SEric Fiselier static_assert(test_constexpr_context<int>(), ""); 43decf22e5SEric Fiselier static_assert(test_constexpr_context<void>(), ""); 44decf22e5SEric Fiselier 45decf22e5SEric Fiselier 46decf22e5SEric Fiselier int main() { 47decf22e5SEric Fiselier 48decf22e5SEric Fiselier } 49