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 pbackfail(int_type c = traits::eof());
15 
16 #include <streambuf>
17 #include <cassert>
18 
19 #include "test_macros.h"
20 
21 int pbackfail_called = 0;
22 
23 struct test
24     : public std::basic_streambuf<char>
25 {
testtest26     test() {}
27 };
28 
main(int,char **)29 int main(int, char**)
30 {
31     test t;
32     assert(t.sputbackc('A') == -1);
33 
34   return 0;
35 }
36