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 // <strstream>
10
11 // class strstreambuf
12
13 // pos_type seekpos(pos_type sp,
14 // ios_base::openmode which = ios_base::in | ios_base::out);
15
16 #include <strstream>
17 #include <cassert>
18
19 #include "test_macros.h"
20
main(int,char **)21 int main(int, char**)
22 {
23 {
24 char buf[] = "0123456789";
25 std::strstreambuf sb(buf, 0);
26 assert(sb.pubseekpos(3, std::ios_base::out) == -1);
27 assert(sb.pubseekpos(3, std::ios_base::in | std::ios_base::out) == -1);
28 assert(sb.pubseekpos(3, std::ios_base::in) == 3);
29 assert(sb.sgetc() == '3');
30 }
31 {
32 char buf[] = "0123456789";
33 std::strstreambuf sb(buf, 0, buf);
34 assert(sb.pubseekpos(3, std::ios_base::in) == 3);
35 assert(sb.pubseekpos(3, std::ios_base::out | std::ios_base::in) == 3);
36 assert(sb.pubseekpos(3, std::ios_base::out) == 3);
37 assert(sb.sputc('a') == 'a');
38 assert(sb.str() == std::string("012a456789"));
39 }
40
41 return 0;
42 }
43