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

   1 // Copyright (C) 2016-2022 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 run { target c++17 } }
  19
  20 #include <memory_resource>
  21 #include <utility>
  22 #include <tuple>
  23
  24 struct do_not_copy {
  25   do_not_copy() = default;
  26   do_not_copy(const do_not_copy&) { throw 1; }
  27 };
  28
  29 void
  30 test01()
  31 {
  32   struct X {
  33     X(do_not_copy&&) { }
  34   };
  35
  36   using pair = std::pair<X, int>;
  37   std::pmr::polymorphic_allocator<pair> a;
  38   auto ptr = a.allocate(1);
  39   a.construct(ptr, std::piecewise_construct,
  40       std::tuple<do_not_copy>{}, std::make_tuple(1));
  41   a.deallocate(ptr, 1);
  42 }
  43
  44 void
  45 test02()
  46 {
  47   struct X {
  48     using allocator_type = std::pmr::polymorphic_allocator<int>;
  49     X(do_not_copy&&, const allocator_type&) { }
  50   };
  51
  52   using pair = std::pair<X, int>;
  53   std::pmr::polymorphic_allocator<pair> a;
  54   auto ptr = a.allocate(1);
  55   a.construct(ptr, std::piecewise_construct,
  56       std::tuple<do_not_copy>{}, std::make_tuple(1));
  57   a.deallocate(ptr, 1);
  58 }
  59
  60 void
  61 test03()
  62 {
  63   struct X {
  64     using allocator_type = std::pmr::polymorphic_allocator<int>;
  65     X(std::allocator_arg_t, const allocator_type&, do_not_copy&&) { }
  66   };
  67
  68   using pair = std::pair<X, int>;
  69   std::pmr::polymorphic_allocator<pair> a;
  70   auto ptr = a.allocate(1);
  71   a.construct(ptr, std::piecewise_construct,
  72       std::tuple<do_not_copy>{}, std::make_tuple(1));
  73   a.deallocate(ptr, 1);
  74 }
  75
  76 void
  77 test04()
  78 {
  79   struct X
  80   {
  81     using allocator_type = std::pmr::polymorphic_allocator<int>;
  82     X() = default;
  83     X(const X&) { throw 1; }
  84     X(const X&, const allocator_type&) { }
  85   };
  86
  87   struct Y
  88   {
  89     using allocator_type = std::pmr::polymorphic_allocator<int>;
  90     Y() = default;
  91     Y(const Y&) = delete;
  92     Y(std::allocator_arg_t, const allocator_type&, const Y&) { }
  93   };
  94
  95   using pair_type = std::pair<X, Y>;
  96   std::pmr::polymorphic_allocator<pair_type> a;
  97   auto ptr = a.allocate(1);
  98   /* not const */ pair_type p;
  99   a.construct(ptr, p); // LWG 2975
 100   a.deallocate(ptr, 1);
 101 }
 102
 103 int main()
 104 {
 105   test01();
 106   test02();
 107   test03();
 108   test04();
 109 }