libstdc++-v3/testsuite/23_containers/deque/allocator/move-2.cc

   1 // Copyright (C) 2014-2025 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++11 } }
  19
  20 #include <deque>
  21
  22 template<typename T>
  23 struct Alloc
  24 {
  25   using value_type = T;
  26
  27   Alloc() = default;
  28
  29   template<typename U>
  30     Alloc(const Alloc<U>&) { }
  31
  32   Alloc& operator=(const Alloc&) = delete;
  33
  34   T* allocate(std::size_t n)
  35   { return std::allocator<T>{}.allocate(n); }
  36
  37   void deallocate(T* p, std::size_t n)
  38   { std::allocator<T>{}.deallocate(p, n); }
  39 };
  40
  41 template<typename T>
  42 bool operator==(const Alloc<T>&, const Alloc<T>&) { return true; }
  43
  44 template<typename T>
  45 bool operator!=(const Alloc<T>&, const Alloc<T>&) { return false; }
  46
  47 void
  48 test01()
  49 {
  50   std::deque<int, Alloc<int>> d;
  51   auto d2 = std::move(d);
  52 }