libstdc++-v3/testsuite/27_io/basic_filebuf/underflow/char/2.cc

   1 // 2003-06-25 Paolo Carlini <pcarlini@unitus.it>
   2
   3 // Copyright (C) 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  19 // USA.
  20
  21 // 27.8.1.4 Overridden virtual functions
  22
  23 #include <fstream>
  24 #include <testsuite_hooks.h>
  25
  26 void test01()
  27 {
  28   bool test __attribute__((unused)) = true;
  29   using namespace std;
  30
  31   filebuf fb_out, fb_in_out;
  32
  33   fb_out.open("tmp_underflow.tst", ios::out);
  34   fb_out.sputc('S');
  35   fb_out.sputc('T');
  36   fb_out.close();
  37
  38   fb_in_out.open("tmp_underflow.tst", ios::in | ios::out);
  39   while (fb_in_out.sbumpc() != filebuf::traits_type::eof());
  40
  41   VERIFY( fb_in_out.sputc('x') == 'x' );
  42   fb_in_out.close();
  43 }
  44
  45 int main()
  46 {
  47   test01();
  48 }