f4c1258d56
Some embedded platforms do not wish to support the C library functionality for handling wchar_t because they have no use for it. It makes sense for libc++ to work properly on those platforms, so this commit adds a carve-out of functionality for wchar_t. Unfortunately, unlike some other carve-outs (e.g. random device), this patch touches several parts of the library. However, despite the wide impact of this patch, I still think it is important to support this configuration since it makes it much simpler to port libc++ to some embedded platforms. Differential Revision: https://reviews.llvm.org/D111265
57 lines
1.5 KiB
C++
57 lines
1.5 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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// <fstream>
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// basic_filebuf<charT,traits>* open(const char* s, ios_base::openmode mode);
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#include <fstream>
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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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{
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std::string temp = get_temp_file_name();
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{
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std::filebuf f;
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assert(f.open(temp.c_str(), std::ios_base::out) != 0);
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assert(f.is_open());
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assert(f.sputn("123", 3) == 3);
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}
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{
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std::filebuf f;
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assert(f.open(temp.c_str(), std::ios_base::in) != 0);
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assert(f.is_open());
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assert(f.sbumpc() == '1');
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assert(f.sbumpc() == '2');
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assert(f.sbumpc() == '3');
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}
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std::remove(temp.c_str());
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#ifndef TEST_HAS_NO_WIDE_CHARACTERS
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{
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std::wfilebuf f;
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assert(f.open(temp.c_str(), std::ios_base::out) != 0);
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assert(f.is_open());
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assert(f.sputn(L"123", 3) == 3);
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}
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{
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std::wfilebuf f;
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assert(f.open(temp.c_str(), std::ios_base::in) != 0);
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assert(f.is_open());
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assert(f.sbumpc() == L'1');
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assert(f.sbumpc() == L'2');
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assert(f.sbumpc() == L'3');
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}
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std::remove(temp.c_str());
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#endif
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return 0;
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}
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