libstdc++-v3/testsuite/20_util/any/requirements.cc

   1 // { dg-options "-std=gnu++17" }
   2 // { dg-do compile }
   3
   4 // Copyright (C) 2016-2020 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 #include <any>
  22 #include <testsuite_hooks.h>
  23
  24 #include <memory>
  25
  26 using std::any;
  27 using std::unique_ptr;
  28
  29 static_assert(std::is_assignable<any&, int>::value);
  30 static_assert(!std::is_assignable<any&, unique_ptr<int>>::value);
  31 static_assert(std::is_constructible<any, int>::value);
  32 static_assert(!std::is_constructible<any, unique_ptr<int>>::value);
  33 static_assert(!std::is_assignable<any&, const unique_ptr<int>&>::value);
  34 static_assert(!std::is_constructible<any&, const unique_ptr<int>&>::value);
  35 static_assert(!std::is_assignable<any&, unique_ptr<int>&>::value);
  36 static_assert(!std::is_constructible<any&, unique_ptr<int>&>::value);
  37
  38 struct NoDefaultCtor
  39 {
  40   NoDefaultCtor() = delete;
  41 };
  42
  43 static_assert(!std::is_constructible<any,
  44               std::in_place_type_t<NoDefaultCtor>>::value);
  45
  46 static_assert(!std::is_constructible<any,
  47               std::in_place_type_t<NoDefaultCtor>&>::value);
  48
  49 static_assert(!std::is_constructible<any,
  50               std::in_place_type_t<NoDefaultCtor>&&>::value);
  51
  52 static_assert(!std::is_constructible<any,
  53               const std::in_place_type_t<NoDefaultCtor>&>::value);
  54
  55 static_assert(!std::is_constructible<any,
  56               const std::in_place_type_t<NoDefaultCtor>&&>::value);