1//===----------------------------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9// <streambuf>
10
11// template <class charT, class traits = char_traits<charT> >
12// class basic_streambuf;
13
14// int_type overflow(int_type c = traits::eof());
15
16#include <streambuf>
17#include <cassert>
18
19#include "test_macros.h"
20
21struct test
22 : public std::basic_streambuf<char>
23{
24 test() {}
25};
26
27int main(int, char**)
28{
29 test t;
30 assert(t.sputc('A') == -1);
31
32 return 0;
33}
34

source code of libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.virtuals/streambuf.virt.put/overflow.pass.cpp