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 // <strstream>
11
12 // class strstreambuf
13
14 // pos_type seekpos(pos_type sp,
15 // ios_base::openmode which = ios_base::in | ios_base::out);
16
17 #include <strstream>
18 #include <cassert>
19
main()20 int main()
21 {
22 {
23 char buf[] = "0123456789";
24 std::strstreambuf sb(buf, 0);
25 assert(sb.pubseekpos(3, std::ios_base::out) == -1);
26 assert(sb.pubseekpos(3, std::ios_base::in | std::ios_base::out) == -1);
27 assert(sb.pubseekpos(3, std::ios_base::in) == 3);
28 assert(sb.sgetc() == '3');
29 }
30 {
31 char buf[] = "0123456789";
32 std::strstreambuf sb(buf, 0, buf);
33 assert(sb.pubseekpos(3, std::ios_base::in) == 3);
34 assert(sb.pubseekpos(3, std::ios_base::out | std::ios_base::in) == 3);
35 assert(sb.pubseekpos(3, std::ios_base::out) == 3);
36 assert(sb.sputc('a') == 'a');
37 assert(sb.str() == std::string("012a456789"));
38 }
39 }
40