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 underflow();
15 
16 #include <streambuf>
17 #include <cassert>
18 
19 #include "test_macros.h"
20 
21 struct test
22     : public std::basic_streambuf<char>
23 {
testtest24     test() {}
25 };
26 
main(int,char **)27 int main(int, char**)
28 {
29     test t;
30     assert(t.sgetc() == -1);
31 
32   return 0;
33 }
34