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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
//
//===----------------------------------------------------------------------===//
// <iterator>
// class ostreambuf_iterator
// bool failed() const throw();
#include <iterator>
#include <sstream>
#include <cassert>
template <typename Char, typename Traits = std::char_traits<Char> >
struct my_streambuf : public std::basic_streambuf<Char,Traits> {
typedef typename std::basic_streambuf<Char,Traits>::int_type int_type;
typedef typename std::basic_streambuf<Char,Traits>::char_type char_type;
my_streambuf() {}
int_type sputc(char_type) { return Traits::eof(); }
};
int main()
{
{
my_streambuf<char> buf;
std::ostreambuf_iterator<char> i(&buf);
i = 'a';
assert(i.failed());
}
{
my_streambuf<wchar_t> buf;
std::ostreambuf_iterator<wchar_t> i(&buf);
i = L'a';
assert(i.failed());
}
}
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