933518fff8
Previously, LIBCXX_ENABLE_FILESYSTEM controlled only whether the filesystem support was compiled into libc++'s library. This commit promotes the setting to a first-class option like LIBCXX_ENABLE_LOCALIZATION, where the whole library is aware of the setting and features that depend on <filesystem> won't be provided at all. The test suite is also properly annotated such that tests that depend on <filesystem> are disabled when the library doesn't support it. This is an alternative to https://llvm.org/D94824, but also an improvement along the lines of LIBCXX_ENABLE_LOCALIZATION that I had been wanting to make for a while. Differential Revision: https://reviews.llvm.org/D94921
64 lines
1.8 KiB
C++
64 lines
1.8 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++03, c++11, c++14
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// UNSUPPORTED: libcpp-has-no-filesystem-library
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// Filesystem is supported on Apple platforms starting with macosx10.15.
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// UNSUPPORTED: with_system_cxx_lib=macosx10.14
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// UNSUPPORTED: with_system_cxx_lib=macosx10.13
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// UNSUPPORTED: with_system_cxx_lib=macosx10.12
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// UNSUPPORTED: with_system_cxx_lib=macosx10.11
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// UNSUPPORTED: with_system_cxx_lib=macosx10.10
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// UNSUPPORTED: with_system_cxx_lib=macosx10.9
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// <fstream>
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// plate <class charT, class traits = char_traits<charT> >
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// class basic_fstream
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// void open(const filesystem::path& s, ios_base::openmode mode = ios_base::in|ios_base::out);
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#include <fstream>
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#include <filesystem>
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#include <cassert>
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#include "test_macros.h"
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#include "platform_support.h"
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int main(int, char**) {
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std::filesystem::path p = get_temp_file_name();
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{
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std::fstream stream;
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assert(!stream.is_open());
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stream.open(p,
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std::ios_base::in | std::ios_base::out | std::ios_base::trunc);
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assert(stream.is_open());
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double x = 0;
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stream << 3.25;
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stream.seekg(0);
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stream >> x;
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assert(x == 3.25);
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}
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std::remove(p.c_str());
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{
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std::wfstream stream;
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assert(!stream.is_open());
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stream.open(p,
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std::ios_base::in | std::ios_base::out | std::ios_base::trunc);
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assert(stream.is_open());
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double x = 0;
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stream << 3.25;
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stream.seekg(0);
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stream >> x;
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assert(x == 3.25);
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}
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std::remove(p.c_str());
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return 0;
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}
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