libstdc++-v3/testsuite/27_io/basic_stringbuf/sputc/char/9404-1.cc

   1 // 2001-05-21 Benjamin Kosnik  <bkoz@redhat.com>
   2
   3 // Copyright (C) 2001-2020 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::stringbuf
  28 {
  29 public:
  30   int_type overflow(int_type c)
  31   {
  32     over_called = true;
  33     return std::stringbuf::overflow(c);
  34   }
  35
  36   const char_type* pub_epptr() const
  37   {
  38     return epptr();
  39   }
  40
  41   const char_type* pub_pptr() const
  42   {
  43     return pptr();
  44   }
  45 };
  46
  47 // libstdc++/9404
  48 void test04()
  49 {
  50   bool over_expected;
  51
  52   // sputc
  53   Derived_stringbuf dsbuf_01;
  54   over_called = false;
  55   dsbuf_01.sputc('i');
  56   VERIFY( over_called );
  57   over_expected = dsbuf_01.pub_epptr() == dsbuf_01.pub_pptr();
  58   over_called = false;
  59   dsbuf_01.sputc('v');
  60   VERIFY( (!over_expected && !over_called)
  61           || (over_expected && over_called) );
  62   dsbuf_01.sputc('i');
  63   VERIFY( dsbuf_01.str() == "ivi" ); // Sanity check.
  64 }
  65
  66 int main()
  67 {
  68   test04();
  69   return 0;
  70 }