libstdc++-v3/testsuite/20_util/polymorphic_allocator/1.cc

   1 // Copyright (C) 2018-2019 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++17" }
  19 // { dg-do compile { target c++17 } }
  20
  21 #include <memory_resource>
  22
  23 struct X { int i = 0; };
  24
  25 using test_type = std::pmr::polymorphic_allocator<X>;
  26
  27 static_assert(std::is_default_constructible_v<test_type>);
  28 static_assert(std::is_destructible_v<test_type>);
  29 static_assert(std::is_copy_constructible_v<test_type>);
  30 static_assert(!std::is_copy_assignable_v<test_type>);
  31 static_assert(std::is_constructible_v<test_type, std::pmr::memory_resource*>);
  32
  33 static_assert(std::is_same_v<test_type::value_type, X>);
  34
  35 static_assert(!std::is_polymorphic_v<test_type>);
  36 static_assert(!std::is_final_v<test_type>);