1 // Copyright (C) 2017-2018 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++11" } 19 // { dg-do compile } 20 21 #include <regex> 22 23 // Ensure compilation of trivial example still works with C++11. 24 // https://gcc.gnu.org/ml/libstdc++/2017-09/msg00040.html 25 std::regex r{""}; 26 std::cmatch m; 27 bool b = regex_match("", m, r); 28