libstdc++-v3/testsuite/27_io/basic_filebuf/sputn/char/9701-1.cc

   1 // 2001-05-21 Benjamin Kosnik  <bkoz@redhat.com>
   2
   3 // Copyright (C) 2001-2023 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 // 27.8.1.4 Overridden virtual functions
  21
  22 #include <fstream>
  23 #include <testsuite_hooks.h>
  24
  25 const char name_05[] = "filebuf_virtuals-5.txt"; // empty file, need to create
  26
  27 bool over_called;
  28
  29 class Derived_filebuf : public std::filebuf
  30 {
  31 public:
  32   int_type overflow(int_type c)
  33   {
  34     over_called = true;
  35     return std::filebuf::overflow(c);
  36   }
  37
  38   const char_type* pub_epptr() const
  39   {
  40     return epptr();
  41   }
  42
  43   const char_type* pub_pptr() const
  44   {
  45     return pptr();
  46   }
  47 };
  48
  49 // libstdc++/9701 (partial)
  50 void test11()
  51 {
  52   bool over_expected;
  53
  54   // sputn
  55   Derived_filebuf dfbuf_02;
  56   dfbuf_02.open(name_05, std::ios_base::out);
  57   over_called = false;
  58   dfbuf_02.sputn("sonne's", 7);
  59   VERIFY( over_called );
  60   over_expected = dfbuf_02.pub_epptr() == dfbuf_02.pub_pptr();
  61   over_called = false;
  62   dfbuf_02.sputn(" peak", 5);
  63   VERIFY( (!over_expected && !over_called)
  64           || (over_expected && over_called) );
  65   dfbuf_02.close();
  66 }
  67
  68 int main()
  69 {
  70   test11();
  71   return 0;
  72 }