libstdc++-v3/testsuite/23_containers/unordered_multimap/insert/55028-debug.cc

   1 // { dg-do run { target c++11 } }
   2 //
   3 // Copyright (C) 2012-2025 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10 //
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15 //
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 // libstdc++/55028
  21 #include <string>
  22 #include <unordered_map>
  23 #include <testsuite_hooks.h>
  24
  25 struct MyType
  26 { };
  27
  28 void test()
  29 {
  30   // using MyMap = std::multimap<std::string, MyType *>; // works
  31   using MyMap = std::unordered_multimap<std::string, MyType*>; // fails to link
  32   MyMap m;
  33   m.insert(std::make_pair(std::string("blah"), (MyType*)nullptr));
  34 }
  35
  36 int main()
  37 {
  38   test();
  39   return 0;
  40 }