1 // 2001-05-21 Benjamin Kosnik  <bkoz@redhat.com>
2 
3 // Copyright (C) 2001-2021 Free Software Foundation, Inc.
4 //
5 // This file is part of the GNU ISO C++ Library.  This library is free
6 // software; you can redistribute it and/or modify it under the
7 // terms of the GNU General Public License as published by the
8 // Free Software Foundation; either version 3, or (at your option)
9 // any later version.
10 
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14 // GNU General Public License for more details.
15 
16 // You should have received a copy of the GNU General Public License along
17 // with this library; see the file COPYING3.  If not see
18 // <http://www.gnu.org/licenses/>.
19 
20 // 27.7.1.3 Overridden virtual functions
21 
22 #include <sstream>
23 #include <testsuite_hooks.h>
24 
25 bool over_called;
26 
27 class Derived_stringbuf : public std::wstringbuf
28 {
29 public:
overflow(int_type c)30   int_type overflow(int_type c)
31   {
32     over_called = true;
33     return std::wstringbuf::overflow(c);
34   }
35 
pub_epptr() const36   const char_type* pub_epptr() const
37   {
38     return epptr();
39   }
40 
pub_pptr() const41   const char_type* pub_pptr() const
42   {
43     return pptr();
44   }
45 };
46 
47 // libstdc++/9404
test04()48 void test04()
49 {
50   bool over_expected;
51 
52   // sputc
53   Derived_stringbuf dsbuf_01;
54   over_called = false;
55   dsbuf_01.sputc(L'i');
56   VERIFY( over_called );
57   over_expected = dsbuf_01.pub_epptr() == dsbuf_01.pub_pptr();
58   over_called = false;
59   dsbuf_01.sputc(L'v');
60   VERIFY( (!over_expected && !over_called)
61 	  || (over_expected && over_called) );
62   dsbuf_01.sputc(L'i');
63   VERIFY( dsbuf_01.str() == L"ivi" ); // Sanity check.
64 }
65 
main()66 int main()
67 {
68   test04();
69   return 0;
70 }
71