gomp-20050608-branch/libstdc++-v3/testsuite/27_io/basic_stringbuf/overflow/char/9988.cc

   1 // 2001-05-21 Benjamin Kosnik  <bkoz@redhat.com>
   2
   3 // Copyright (C) 2001, 2002, 2003 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 2, 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 COPYING.  If not, write to the Free
  18 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  19 // USA.
  20
  21 // 27.8.1.4 Overridden virtual functions
  22
  23 #include <sstream>
  24 #include <testsuite_hooks.h>
  25
  26 class OverBuf : public std::stringbuf
  27 {
  28 public:
  29   int_type pub_overflow(int_type c = traits_type::eof())
  30   { return std::stringbuf::overflow(c); }
  31 };
  32
  33 // libstdc++/9988
  34 // filebuf::overflow writes EOF to file
  35 void test15()
  36 {
  37   using namespace std;
  38   bool test __attribute__((unused)) = true;
  39
  40   OverBuf sb;
  41
  42   sb.sputc('a');
  43   sb.pub_overflow('b');
  44   sb.pub_overflow();
  45   sb.sputc('c');
  46
  47   stringbuf sbin(sb.str(), ios_base::in);
  48   stringbuf::int_type c;
  49   c = sbin.sbumpc();
  50   VERIFY( c == 'a' );
  51   c = sbin.sbumpc();
  52   VERIFY( c == 'b' );
  53   c = sbin.sbumpc();
  54   VERIFY( c == 'c' );
  55   c = sbin.sbumpc();
  56   VERIFY( c == stringbuf::traits_type::eof() );
  57 }
  58
  59 int main()
  60 {
  61   test15();
  62   return 0;
  63 }