| 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 | |
| 21 | int 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 | |