libstdc++-v3/testsuite/30_threads/promise/requirements/lwg3466.cc

   1 // Copyright (C) 2020-2021 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 // LWG 3466
  21 // Specify the requirements for promise/future/shared_future consistently
  22
  23 #include <future>
  24
  25 std::promise<int(&)[1]> good;
  26 std::promise<int(&)()> good2;
  27
  28 std::promise<int[1]> bad; // { dg-error "here" }
  29 // { dg-error "result type must not be an array" "" { target *-*-* } 0 }
  30 // { dg-prune-output {request for member '~int \[1\]'} }
  31
  32 std::promise<int()> bad2; // { dg-error "here" }
  33 // { dg-error "result type must not be a function" "" { target *-*-* } 0 }
  34 // { dg-prune-output {'sizeof \(int\(\)\)'} }
  35
  36 struct Indestructible { ~Indestructible() = delete; };
  37 std::promise<Indestructible> bad3; // { dg-error "here" }
  38 // { dg-error "result type must be destructible" "" { target *-*-* } 0 }
  39 // { dg-prune-output {deleted function} }
  40
  41 class PrivateDtor { public: PrivateDtor(); private: ~PrivateDtor(); };
  42 std::promise<PrivateDtor> bad4; // { dg-error "here" }
  43 // { dg-prune-output {is private} }