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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
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20, c++23
// <fstream>
// class basic_filebuf;
// native_handle_type native_handle() const noexcept;
#include <cassert>
#include <fstream>
#include <filesystem>
#include <utility>
#include "platform_support.h"
#include "test_macros.h"
#include "../native_handle_test_helpers.h"
template <typename CharT>
void test() {
std::basic_filebuf<CharT> f;
std::filesystem::path p = get_temp_file_name();
// non-const
{
assert(f.open(p, std::ios_base::in) != nullptr);
std::same_as<NativeHandleT> decltype(auto) handle = f.native_handle();
assert(is_handle_valid(handle));
f.close();
assert(!is_handle_valid(handle));
static_assert(noexcept(f.native_handle()));
}
// const
{
assert(f.open(p, std::ios_base::in) != nullptr);
std::same_as<NativeHandleT> decltype(auto) const_handle = std::as_const(f).native_handle();
assert(is_handle_valid(const_handle));
f.close();
assert(!is_handle_valid(const_handle));
static_assert(noexcept(std::as_const(f).native_handle()));
}
}
int main(int, char**) {
test<char>();
#ifndef TEST_HAS_NO_WIDE_CHARACTERS
test<wchar_t>();
#endif
return 0;
}
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