libstdc++-v3/testsuite/30_threads/promise/cons/alloc2.cc

   1 // { dg-do compile { target c++11 } }
   2 // { dg-require-gthreads "" }
   3
   4 // Copyright (C) 2011-2022 Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 3, or (at your option)
  10 // any later version.
  11
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING3.  If not see
  19 // <http://www.gnu.org/licenses/>.
  20
  21 // Test that promise can be default-constructed or move-constructed
  22 // in a context that does uses-allocator construction.
  23
  24 #include <future>
  25 #include <memory>
  26 #include <tuple>
  27
  28 using std::promise;
  29 using std::allocator_arg;
  30 using std::allocator;
  31 using std::tuple;
  32
  33 typedef promise<int>  p;
  34 typedef promise<int&> pr;
  35 typedef promise<void> pv;
  36 allocator<p> a;
  37
  38 tuple<p, pr, pv> t1{ allocator_arg, a };
  39 tuple<p, pr, pv> t2{ allocator_arg, a, p{}, pr{}, pv{} };