Louis Dionne ac8c9f1e39
[libc++] Properly guard std::filesystem with >= C++17 (#72701)
<filesystem> is a C++17 addition. In C++11 and C++14 modes, we actually
have all the code for <filesystem> but it is hidden behind a non-inline
namespace __fs so it is not accessible. Instead of doing this unusual
dance, just guard the code for filesystem behind a classic C++17 check
like we normally do.
2023-11-28 18:41:59 -05:00

50 lines
1.4 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
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14
// UNSUPPORTED: availability-filesystem-missing
// <filesystem>
// class path
// typedef ... value_type;
// typedef basic_string<value_type> string_type;
// static constexpr value_type preferred_separator = ...;
#include <filesystem>
#include <cassert>
#include <string>
#include <type_traits>
#include "test_macros.h"
namespace fs = std::filesystem;
int main(int, char**) {
using namespace fs;
#ifdef _WIN32
ASSERT_SAME_TYPE(path::value_type, wchar_t);
#else
ASSERT_SAME_TYPE(path::value_type, char);
#endif
ASSERT_SAME_TYPE(path::string_type, std::basic_string<path::value_type>);
{
ASSERT_SAME_TYPE(const path::value_type, decltype(path::preferred_separator));
#ifdef _WIN32
static_assert(path::preferred_separator == '\\', "");
#else
static_assert(path::preferred_separator == '/', "");
#endif
// Make preferred_separator ODR used by taking its address.
const path::value_type* dummy = &path::preferred_separator;
((void)dummy);
}
return 0;
}