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// { dg-options "-std=gnu++17" }
// { dg-do compile }
// Copyright (C) 2016-2019 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/>.
#include <type_traits>
#include <testsuite_tr1.h>
#ifndef __cpp_lib_is_swappable
# error "Feature-test macro for is_nothrow_swappable_with missing"
#elif __cpp_lib_is_swappable != 201603
# error "Feature-test macro for is_nothrow_swappable_with has wrong value"
#endif
namespace funny {
struct T0 {};
void swap(T0, T0) noexcept;
struct T1
{
friend void swap(T1, T1) noexcept;
};
struct T2 {};
struct T3 {};
void swap(T2, T3) noexcept;
void swap(T3, T2) noexcept;
struct T4 { operator T0() const noexcept; };
struct F0 {};
void swap(F0, F0) = delete;
struct F1 {};
void swap(F1, F1);
struct F2 {};
void swap(F0, F2) noexcept;
void swap(F2, F0);
struct F3
{
friend void swap(F3, F3) = delete;
};
struct F4
{
friend void swap(F4, F4);
};
struct F5 { operator T0() const; };
struct BoolLike {};
void swap(BoolLike, bool&) noexcept;
void swap(bool&, BoolLike) noexcept;
struct BoolLikeErr {};
void swap(BoolLikeErr, bool&);
void swap(bool&, BoolLikeErr) noexcept;
}
void test01()
{
using std::is_nothrow_swappable_with;
using namespace __gnu_test;
// Positive tests.
static_assert(test_property<is_nothrow_swappable_with, int&, int&>(true),
"");
static_assert(test_property<is_nothrow_swappable_with, funny::T0,
funny::T0>(true), "");
static_assert(test_property<is_nothrow_swappable_with, funny::T0,
const funny::T0>(true), "");
static_assert(test_property<is_nothrow_swappable_with, funny::T1,
funny::T1>(true), "");
static_assert(test_property<is_nothrow_swappable_with, funny::T1,
const funny::T1>(true), "");
static_assert(test_property<is_nothrow_swappable_with, funny::T2,
funny::T3>(true), "");
static_assert(test_property<is_nothrow_swappable_with, funny::T3,
funny::T2>(true), "");
static_assert(test_property<is_nothrow_swappable_with, funny::T0,
funny::T4>(true), "");
static_assert(test_property<is_nothrow_swappable_with, funny::T4,
funny::T0>(true), "");
static_assert(test_property<is_nothrow_swappable_with, funny::BoolLike,
bool&>(true), "");
static_assert(test_property<is_nothrow_swappable_with, const funny::BoolLike,
bool&>(true), "");
// Negative tests.
static_assert(test_property<is_nothrow_swappable_with, const int&,
const int&>(false), "");
static_assert(test_property<is_nothrow_swappable_with, int&,
unsigned&>(false), "");
static_assert(test_property<is_nothrow_swappable_with, funny::F0,
funny::F0>(false), "");
static_assert(test_property<is_nothrow_swappable_with, funny::F0,
const funny::F0>(false), "");
static_assert(test_property<is_nothrow_swappable_with, funny::F1,
funny::F1>(false), "");
static_assert(test_property<is_nothrow_swappable_with, funny::F1,
const funny::F1>(false), "");
static_assert(test_property<is_nothrow_swappable_with, funny::F0,
funny::F2>(false), "");
static_assert(test_property<is_nothrow_swappable_with, funny::F2,
funny::F0>(false), "");
static_assert(test_property<is_nothrow_swappable_with, funny::F3,
funny::F3>(false), "");
static_assert(test_property<is_nothrow_swappable_with, funny::F3,
const funny::F3>(false), "");
static_assert(test_property<is_nothrow_swappable_with, funny::F4,
funny::F4>(false), "");
static_assert(test_property<is_nothrow_swappable_with, funny::F4,
const funny::F4>(false), "");
static_assert(test_property<is_nothrow_swappable_with, funny::T0,
funny::F5>(false), "");
static_assert(test_property<is_nothrow_swappable_with, funny::F5,
funny::T0>(false), "");
static_assert(test_property<is_nothrow_swappable_with, funny::BoolLikeErr,
bool&>(false), "");
static_assert(test_property<is_nothrow_swappable_with,
const funny::BoolLikeErr, bool&>(false), "");
}
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