xref: /llvm-project-15.0.7/libcxx/test/std/containers/sequences/deque/deque.cons/default_noexcept.pass.cpp (revision 7da4ee6f)

//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//

// <deque>

// deque()
//        noexcept(is_nothrow_default_constructible<allocator_type>::value);

// This tests a conforming extension

// UNSUPPORTED: c++03

#include <deque>
#include <cassert>

#include "test_macros.h"
#include "MoveOnly.h"
#include "test_allocator.h"

template <class T>
struct some_alloc
{
    typedef T value_type;
    some_alloc(const some_alloc&);
    void allocate(size_t);
};

int main(int, char**)
{
#if defined(_LIBCPP_VERSION)
    {
        typedef std::deque<MoveOnly> C;
        static_assert(std::is_nothrow_default_constructible<C>::value, "");
    }
    {
        typedef std::deque<MoveOnly, test_allocator<MoveOnly>> C;
        static_assert(std::is_nothrow_default_constructible<C>::value, "");
    }
#endif // _LIBCPP_VERSION
    {
        typedef std::deque<MoveOnly, other_allocator<MoveOnly>> C;
        static_assert(!std::is_nothrow_default_constructible<C>::value, "");
    }
    {
        typedef std::deque<MoveOnly, some_alloc<MoveOnly>> C;
        static_assert(!std::is_nothrow_default_constructible<C>::value, "");
    }

  return 0;
}