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 // streamsize xsputn(const char_type* s, streamsize n);
16 
17 #include <streambuf>
18 #include <cassert>
19 
20 struct test
21     : public std::basic_streambuf<char>
22 {
23     typedef std::basic_streambuf<char> base;
24 
testtest25     test() {}
26 
setptest27     void setp(char* pbeg, char* pend)
28     {
29         base::setp(pbeg, pend);
30     }
31 };
32 
main()33 int main()
34 {
35     {
36         test t;
37         char in[] = "123456";
38         assert(t.sputn(in, sizeof(in)) == 0);
39         char out[sizeof(in)] = {0};
40         t.setp(out, out+sizeof(out));
41         assert(t.sputn(in, sizeof(in)) == sizeof(in));
42         assert(strcmp(in, out) == 0);
43     }
44 }
45