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// Copyright (C) 2018-2019 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
// { dg-options "-std=gnu++17" }
// { dg-do compile { target c++17 } }
#include <optional>
struct NonTrivialDtor {
~NonTrivialDtor() { }
};
struct NonTrivialCopyAssign {
NonTrivialCopyAssign& operator=(const NonTrivialCopyAssign&) { return *this; }
NonTrivialCopyAssign& operator=(NonTrivialCopyAssign&&) = default;
};
struct NonTrivialMoveAssign {
NonTrivialMoveAssign& operator=(const NonTrivialMoveAssign&) = default;
NonTrivialMoveAssign& operator=(NonTrivialMoveAssign&&) { return *this; }
};
struct NonTrivialAssign {
NonTrivialAssign& operator=(const NonTrivialAssign&) { return *this; }
NonTrivialAssign& operator=(NonTrivialAssign&&) { return *this; }
};
struct NonTrivialAll {
~NonTrivialAll() { }
NonTrivialAll& operator=(const NonTrivialAll&) { return *this; }
NonTrivialAll& operator=(NonTrivialAll&&) { return *this; }
};
struct ConstExpr { int i = 0; };
struct Trivial { int i; };
template<typename T>
constexpr bool check
= std::is_nothrow_default_constructible_v<std::optional<T>>;
// PR libstdc++/85642
static_assert(check<NonTrivialDtor>);
static_assert(check<NonTrivialCopyAssign>);
static_assert(check<NonTrivialMoveAssign>);
static_assert(check<NonTrivialAssign>);
static_assert(check<NonTrivialAll>);
static_assert(check<ConstExpr>);
static_assert(check<Trivial>);
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