1// { dg-options "-std=gnu++11" } 2// { dg-do compile } 3 4// Copyright (C) 2008-2015 Free Software Foundation, Inc. 5// 6// This file is part of the GNU ISO C++ Library. This library is free 7// software; you can redistribute it and/or modify it under the 8// terms of the GNU General Public License as published by the 9// Free Software Foundation; either version 3, or (at your option) 10// any later version. 11// 12// This library is distributed in the hope that it will be useful, 13// but WITHOUT ANY WARRANTY; without even the implied warranty of 14// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15// GNU General Public License for more details. 16// 17// You should have received a copy of the GNU General Public License along 18// with this library; see the file COPYING3. If not see 19// <http://www.gnu.org/licenses/>. 20 21 22#include <functional> 23 24struct test_type 25{ 26 int member(); 27 int cmember()const; 28 int member2(char); 29 int cmember2(char)const; 30}; 31 32struct functor1 : public std::unary_function<int, double> 33{ 34 double operator()(int) const; 35}; 36 37struct functor2 : public std::binary_function<int, char, double> 38{ 39 double operator()(int, char) const; 40}; 41 42template <class T> 43void verify_return_type(T, T) 44{ 45} 46 47void test01() 48{ 49 test_type* null_tt = 0; 50 const test_type* null_ttc = 0; 51 int zero; 52 53 std::reference_wrapper<double (int)>* pr1(0); 54 verify_return_type((*pr1)(0), double()); 55 std::reference_wrapper<double (*)(int)>* pr2(0); 56 verify_return_type((*pr2)(0), double()); 57 std::reference_wrapper<int (test_type::*)()>* pr3(0); 58 verify_return_type((*pr3)(null_tt), int()); 59 std::reference_wrapper<int (test_type::*)()const>* pr4(0); 60 verify_return_type((*pr4)(null_ttc), int()); 61 std::reference_wrapper<functor1>* pr5(0); 62 63 // libstdc++/24803 64 verify_return_type((*pr5)(0), double()); 65 verify_return_type((*pr5)(zero), double()); 66 67 std::reference_wrapper<double (int, char)>* pr1b(0); 68 verify_return_type((*pr1b)(0, 0), double()); 69 std::reference_wrapper<double (*)(int, char)>* pr2b(0); 70 verify_return_type((*pr2b)(0, 0), double()); 71 std::reference_wrapper<int (test_type::*)(char)>* pr3b(0); 72 verify_return_type((*pr3b)(null_tt,zero), int()); 73 std::reference_wrapper<int (test_type::*)()const>* pr4b(0); 74 verify_return_type((*pr4b)(null_ttc), int()); 75 std::reference_wrapper<functor2>* pr5b(0); 76 77 // libstdc++/24803 78 verify_return_type((*pr5b)(0, 0), double()); 79 verify_return_type((*pr5b)(zero, zero), double()); 80} 81