15a83710eSEric Fiselier //===----------------------------------------------------------------------===// 25a83710eSEric Fiselier // 357b08b09SChandler Carruth // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 457b08b09SChandler Carruth // See https://llvm.org/LICENSE.txt for license information. 557b08b09SChandler Carruth // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 65a83710eSEric Fiselier // 75a83710eSEric Fiselier //===----------------------------------------------------------------------===// 85a83710eSEric Fiselier 95a83710eSEric Fiselier // <functional> 105a83710eSEric Fiselier 115a83710eSEric Fiselier // reference_wrapper 125a83710eSEric Fiselier 135a83710eSEric Fiselier // template <ObjectType T> reference_wrapper<T> ref(T& t); 145a83710eSEric Fiselier 155a83710eSEric Fiselier #include <functional> 165a83710eSEric Fiselier #include <cassert> 175a83710eSEric Fiselier 187fc6a556SMarshall Clow #include "test_macros.h" 197fc6a556SMarshall Clow test()20*a13c1058SArthur O'DwyerTEST_CONSTEXPR_CXX20 bool test() 215a83710eSEric Fiselier { 225a83710eSEric Fiselier int i = 0; 235a83710eSEric Fiselier std::reference_wrapper<int> r = std::ref(i); 245a83710eSEric Fiselier assert(&r.get() == &i); 25*a13c1058SArthur O'Dwyer return true; 26*a13c1058SArthur O'Dwyer } 27*a13c1058SArthur O'Dwyer main(int,char **)28*a13c1058SArthur O'Dwyerint main(int, char**) 29*a13c1058SArthur O'Dwyer { 30*a13c1058SArthur O'Dwyer test(); 31*a13c1058SArthur O'Dwyer #if TEST_STD_VER > 17 32*a13c1058SArthur O'Dwyer static_assert(test()); 33*a13c1058SArthur O'Dwyer #endif 342df59c50SJF Bastien 352df59c50SJF Bastien return 0; 365a83710eSEric Fiselier } 37