libstdc++-v3/testsuite/experimental/memory/observer_ptr/typedefs.cc

   1 // { dg-options "-std=gnu++14" }
   2 // { dg-do compile }
   3
   4 // Copyright (C) 2015-2016 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 moved_to 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 <experimental/memory>
  22 #include <type_traits>
  23
  24 static_assert(std::is_same<
  25               std::experimental::observer_ptr<int>::element_type,
  26               int>::value, "");
  27 static_assert(std::is_same<
  28               std::experimental::observer_ptr<const int>::element_type,
  29               const int>::value, "");
  30 static_assert(std::is_same<
  31               std::experimental::observer_ptr<volatile int>::element_type,
  32               volatile int>::value, "");