libstdc++-v3/testsuite/20_util/uses_allocator/69114.cc

   1 // Copyright (C) 2016-2024 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++11 } }
  19
  20 // PR libstdc++/69114
  21
  22 #include <tuple>
  23
  24 template<typename T>
  25 struct Alloc
  26 {
  27   using value_type = T;
  28
  29   Alloc() = default;
  30
  31   template<typename U>
  32     Alloc(const Alloc<U>&) { }
  33
  34   T* allocate(std::size_t);
  35   void deallocate(T*, std::size_t);
  36
  37   bool operator==(const Alloc&) const { return true; }
  38   bool operator!=(const Alloc&) const { return false; }
  39
  40   void operator&() = delete;
  41 };
  42
  43 void
  44 test01()
  45 {
  46   Alloc<int> a;
  47   std::tuple<int> t(std::allocator_arg, a);
  48 }