libstdc++-v3/testsuite/experimental/polymorphic_allocator/pmr_typedefs_unordered_multimap.cc

   1 // Copyright (C) 2018-2024 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-do compile { target c++14 } }
  19
  20 #include <experimental/unordered_map>
  21
  22 namespace xpmr = std::experimental::pmr;
  23
  24 struct X { };
  25 struct Y { };
  26 struct Hash { std::size_t operator()(X) const { return 0; } };
  27 struct Eq { bool operator()(X, X) const { return true; } };
  28
  29 static_assert(std::is_same<xpmr::unordered_multimap<X, Y>,
  30     std::unordered_multimap<X, Y, std::hash<X>, std::equal_to<X>,
  31       xpmr::polymorphic_allocator<std::pair<const X, Y>>>>::value,
  32     "pmr::unordered_multimap");
  33 static_assert(std::is_same<xpmr::unordered_multimap<X, Y, Hash>,
  34     std::unordered_multimap<X, Y, Hash, std::equal_to<X>,
  35       xpmr::polymorphic_allocator<std::pair<const X, Y>>>>::value,
  36     "pmr::unordered_multimap");
  37 static_assert(std::is_same<xpmr::unordered_multimap<X, Y, Hash, Eq>,
  38     std::unordered_multimap<X, Y, Hash, Eq,
  39       xpmr::polymorphic_allocator<std::pair<const X, Y>>>>::value,
  40     "pmr::unordered_multimap");