libstdc++-v3/testsuite/23_containers/unordered_map/insert/83709.cc

   1 // { dg-do run { target c++11 } }
   2 //
   3 // Copyright (C) 2018-2025 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 #include <unordered_map>
  21 #include <string>
  22 #include <testsuite_hooks.h>
  23
  24 void test01()
  25 {
  26   std::unordered_map<std::string, std::string> m
  27   { {"E", "E" }, { "T", "T" } };
  28
  29   VERIFY( m.size() == 2 );
  30
  31   auto bcount = m.bucket_count();
  32
  33   m.insert({ {"E", "E" }, { "T", "T" } });
  34
  35   VERIFY( m.size() == 2 );
  36   VERIFY( m.bucket_count() == bcount );
  37 }
  38
  39 int main()
  40 {
  41   test01();
  42   return 0;
  43 }