1 //===----------------------------------------------------------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 // <streambuf>
11
12 // template <class charT, class traits = char_traits<charT> >
13 // class basic_streambuf;
14
15 // int_type pbackfail(int_type c = traits::eof());
16
17 #include <streambuf>
18 #include <cassert>
19
20 int pbackfail_called = 0;
21
22 struct test
23 : public std::basic_streambuf<char>
24 {
testtest25 test() {}
26 };
27
main()28 int main()
29 {
30 test t;
31 assert(t.sputbackc('A') == -1);
32 }
33