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// <istream>
10
11// basic_istream<charT,traits>&
12// ignore(streamsize n = 1, int_type delim = traits::eof());
13
14// https://llvm.org/PR16427
15
16#include <sstream>
17#include <cassert>
18
19#include "test_macros.h"
20
21int main(int, char**)
22{
23 int bad=-1;
24 std::ostringstream os;
25 os << "aaaabbbb" << static_cast<char>(bad)
26 << "ccccdddd" << std::endl;
27 std::string s=os.str();
28
29 std::istringstream is(s);
30 const unsigned int ignoreLen=10;
31 std::istringstream::pos_type a=is.tellg();
32 is.ignore(n: ignoreLen);
33 std::istringstream::pos_type b=is.tellg();
34 assert((b-a)==ignoreLen);
35
36 return 0;
37}
38

source code of libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/ignore_0xff.pass.cpp