| //===----------------------------------------------------------------------===// |
| // |
| // 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 |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // <streambuf> |
| |
| // template <class charT, class traits = char_traits<charT> > |
| // class basic_streambuf; |
| |
| // streamsize xsgetn(char_type* s, streamsize n); |
| |
| #include <streambuf> |
| #include <cassert> |
| #include <cstring> |
| |
| #include "test_macros.h" |
| |
| struct test |
| : public std::basic_streambuf<char> |
| { |
| typedef std::basic_streambuf<char> base; |
| |
| test() {} |
| |
| void setg(char* gbeg, char* gnext, char* gend) |
| { |
| base::setg(gbeg, gnext, gend); |
| } |
| }; |
| |
| int main(int, char**) |
| { |
| test t; |
| char input[7] = "123456"; |
| t.setg(input, input, input+7); |
| char output[sizeof(input)] = {0}; |
| assert(t.sgetn(output, 10) == 7); |
| assert(std::strcmp(input, output) == 0); |
| |
| return 0; |
| } |