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
58 lines
1.2 KiB
C++
58 lines
1.2 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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// <iomanip>
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// T5 setprecision(int n);
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#include <iomanip>
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#include <istream>
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#include <ostream>
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#include <cassert>
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#include "test_macros.h"
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template <class CharT>
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struct testbuf
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: public std::basic_streambuf<CharT>
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{
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testbuf() {}
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};
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int main(int, char**)
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{
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{
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testbuf<char> sb;
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std::istream is(&sb);
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is >> std::setprecision(10);
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assert(is.precision() == 10);
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}
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{
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testbuf<char> sb;
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std::ostream os(&sb);
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os << std::setprecision(10);
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assert(os.precision() == 10);
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}
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#ifndef TEST_HAS_NO_WIDE_CHARACTERS
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{
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testbuf<wchar_t> sb;
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std::wistream is(&sb);
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is >> std::setprecision(10);
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assert(is.precision() == 10);
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}
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{
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testbuf<wchar_t> sb;
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std::wostream os(&sb);
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os << std::setprecision(10);
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assert(os.precision() == 10);
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}
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#endif
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return 0;
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}
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