52066eae5d
* testsuite/*: Use { target c++11 } or { target c++14 } instead of
using -std in dg-options.
From-SVN: r239777
66 lines
1.5 KiB
C++
66 lines
1.5 KiB
C++
// { dg-do run { target c++14 } }
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// Copyright (C) 2013-2016 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a moved_to of the GNU General Public License along
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// with this library; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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#include <experimental/optional>
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#include <testsuite_hooks.h>
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int counter = 0;
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struct mixin_counter
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{
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mixin_counter() { ++counter; }
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mixin_counter(mixin_counter const&) { ++counter; }
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~mixin_counter() { --counter; }
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};
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struct value_type : private mixin_counter { };
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int main()
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{
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using O = std::experimental::optional<value_type>;
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// Check std::experimental::nullopt_t and 'default' (= {}) assignment
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{
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O o;
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o = std::experimental::nullopt;
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VERIFY( !o );
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}
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{
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O o { std::experimental::in_place };
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o = std::experimental::nullopt;
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VERIFY( !o );
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}
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{
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O o;
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o = {};
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VERIFY( !o );
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}
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{
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O o { std::experimental::in_place };
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o = {};
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VERIFY( !o );
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}
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VERIFY( counter == 0 );
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}
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