llvm-project/libcxx/test/std/containers/associative/multiset/multiset.cons/default_noexcept.pass.cpp

59 lines
1.6 KiB
C++

//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <set>
// multiset()
// noexcept(
// is_nothrow_default_constructible<allocator_type>::value &&
// is_nothrow_default_constructible<key_compare>::value &&
// is_nothrow_copy_constructible<key_compare>::value);
// This tests a conforming extension
// UNSUPPORTED: c++98, c++03
#include <set>
#include <cassert>
#include "test_macros.h"
#include "MoveOnly.h"
#include "test_allocator.h"
template <class T>
struct some_comp
{
typedef T value_type;
some_comp();
bool operator()(const T&, const T&) const { return false; }
};
int main(int, char**)
{
#if defined(_LIBCPP_VERSION)
{
typedef std::multiset<MoveOnly> C;
static_assert(std::is_nothrow_default_constructible<C>::value, "");
}
{
typedef std::multiset<MoveOnly, std::less<MoveOnly>, test_allocator<MoveOnly>> C;
static_assert(std::is_nothrow_default_constructible<C>::value, "");
}
#endif // _LIBCPP_VERSION
{
typedef std::multiset<MoveOnly, std::less<MoveOnly>, other_allocator<MoveOnly>> C;
static_assert(!std::is_nothrow_default_constructible<C>::value, "");
}
{
typedef std::multiset<MoveOnly, some_comp<MoveOnly>> C;
static_assert(!std::is_nothrow_default_constructible<C>::value, "");
}
return 0;
}