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 uflow();
16 
17 #include <streambuf>
18 #include <cassert>
19 
20 int underflow_called = 0;
21 
22 struct test
23     : public std::basic_streambuf<char>
24 {
testtest25     test() {}
26 
27 };
28 
main()29 int main()
30 {
31     test t;
32     assert(t.sgetc() == -1);
33 }
34