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 // <streambuf>
10 
11 // template <class charT, class traits = char_traits<charT> >
12 // class basic_streambuf;
13 
14 // void pbump(int n);
15 
16 #include <streambuf>
17 #include <cassert>
18 
19 #include "test_macros.h"
20 
21 template <class CharT>
22 struct test
23     : public std::basic_streambuf<CharT>
24 {
25     typedef std::basic_streambuf<CharT> base;
26 
testtest27     test() {}
28 
setptest29     void setp(CharT* pbeg, CharT* pend)
30     {
31         base::setp(pbeg, pend);
32     }
33 
pbumptest34     void pbump(int n)
35     {
36         CharT* pbeg = base::pbase();
37         CharT* pnext = base::pptr();
38         CharT* pend = base::epptr();
39         base::pbump(n);
40         assert(base::pbase() == pbeg);
41         assert(base::pptr() == pnext+n);
42         assert(base::epptr() == pend);
43     }
44 };
45 
main(int,char **)46 int main(int, char**)
47 {
48     {
49         test<char> t;
50         char in[] = "ABCDE";
51         t.setp(in, in+sizeof(in)/sizeof(in[0]));
52         t.pbump(2);
53         t.pbump(1);
54     }
55     {
56         test<wchar_t> t;
57         wchar_t in[] = L"ABCDE";
58         t.setp(in, in+sizeof(in)/sizeof(in[0]));
59         t.pbump(3);
60         t.pbump(1);
61     }
62 
63   return 0;
64 }
65