1 // Copyright (C) 2020-2021 Free Software Foundation, Inc. 2 // 3 // This file is part of the GNU ISO C++ Library. This library is free 4 // software; you can redistribute it and/or modify it under the 5 // terms of the GNU General Public License as published by the 6 // Free Software Foundation; either version 3, or (at your option) 7 // any later version. 8 9 // This library is distributed in the hope that it will be useful, 10 // but WITHOUT ANY WARRANTY; without even the implied warranty of 11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 // GNU General Public License for more details. 13 14 // You should have received a copy of the GNU General Public License along 15 // with this library; see the file COPYING3. If not see 16 // <http://www.gnu.org/licenses/>. 17 18 // { dg-options "-std=gnu++2a" } 19 // { dg-do compile { target c++2a } } 20 21 #include <mutex> 22 23 struct clok 24 { 25 // no clok::rep or clok::period defined 26 using duration = std::chrono::milliseconds; 27 using time_point = std::chrono::time_point<clok>; 28 static constexpr bool is_steady = false; 29 static time_point now(); 30 }; 31 32 void test01()33test01() 34 { 35 std::timed_mutex m; 36 m.try_lock_until(clok::now()); // { dg-error "here" } 37 } 38 39 struct cloc 40 { 41 using duration = std::chrono::milliseconds; 42 using rep = duration::rep; 43 using period = duration::period; 44 // cloc::time_point::duration should be the same as cloc::duration: 45 using time_point = std::chrono::time_point<cloc, std::chrono::seconds>; 46 static constexpr bool is_steady = false; 47 static time_point now(); 48 }; 49 50 void test02()51test02() 52 { 53 std::timed_mutex m; 54 m.try_lock_until(cloc::now()); // { dg-error "here" } 55 } 56 57 // { dg-error "static assertion failed" "" { target *-*-* } 0 } 58