libstdc++-v3/testsuite/25_algorithms/set_intersection/34730.cc

   1 // Copyright (C) 2008-2023 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 // NB: This issue affected only debug-mode.
  19
  20 // { dg-do compile }
  21
  22 // libstdc++/34730
  23
  24 #include <string>
  25 #include <vector>
  26 #include <algorithm>
  27
  28 using namespace std;
  29
  30 typedef pair<int, string> intstring;
  31
  32 struct intstrcmp
  33 {
  34   bool
  35   operator()(const string& x, const intstring& y) const
  36   { return x < y.second; }
  37
  38   bool
  39   operator()(const intstring& x, const string& y) const
  40   { return x.second < y; }
  41 };
  42
  43 void test01()
  44 {
  45   vector<string> vec1;
  46   vector<intstring> vec2;
  47   vector<intstring> vec3;
  48   set_intersection(vec2.begin(), vec2.end(),
  49                    vec1.begin(), vec1.end(),
  50                    back_inserter(vec3), intstrcmp());
  51 }