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//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// <unordered_set>
// unordered_set()
// 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 <unordered_set>
#include <cassert>
#include "test_macros.h"
#include "MoveOnly.h"
#include "test_allocator.h"
#include "../../../test_hash.h"
template <class T>
struct some_comp
{
typedef T value_type;
some_comp();
some_comp(const some_comp&);
bool operator()(const T&, const T&) const { return false; }
};
template <class T>
struct some_hash
{
typedef T value_type;
some_hash();
some_hash(const some_hash&);
std::size_t operator()(T const&) const;
};
int main(int, char**)
{
#if defined(_LIBCPP_VERSION)
{
typedef std::unordered_set<MoveOnly> C;
static_assert(std::is_nothrow_default_constructible<C>::value, "");
}
{
typedef std::unordered_set<MoveOnly, std::hash<MoveOnly>,
std::equal_to<MoveOnly>, test_allocator<MoveOnly>> C;
static_assert(std::is_nothrow_default_constructible<C>::value, "");
}
#endif // _LIBCPP_VERSION
{
typedef std::unordered_set<MoveOnly, std::hash<MoveOnly>,
std::equal_to<MoveOnly>, other_allocator<MoveOnly>> C;
static_assert(!std::is_nothrow_default_constructible<C>::value, "");
}
{
typedef std::unordered_set<MoveOnly, some_hash<MoveOnly>> C;
static_assert(!std::is_nothrow_default_constructible<C>::value, "");
}
{
typedef std::unordered_set<MoveOnly, std::hash<MoveOnly>,
some_comp<MoveOnly>> C;
static_assert(!std::is_nothrow_default_constructible<C>::value, "");
}
return 0;
}
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