libstdc++-v3/testsuite/27_io/basic_filebuf/pbackfail/char/9761.cc

   1 // 2003-06-02 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, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  19 // USA.
  20
  21 // 27.8.1.4 Overridden virtual functions
  22
  23 // { dg-require-fileio "" }
  24
  25 #include <fstream>
  26 #include <testsuite_hooks.h>
  27
  28 const char name_01[] = "filebuf_virtuals-1.txt"; // file with data in it
  29
  30 // libstdc++/9761
  31 void test01()
  32 {
  33   using namespace std;
  34   bool test __attribute__((unused)) = true;
  35
  36   filebuf fbuf;
  37   filebuf::int_type r1, r2;
  38
  39   fbuf.open(name_01, ios_base::in);
  40
  41   fbuf.sbumpc();
  42   fbuf.sbumpc();
  43
  44   r1 = fbuf.sputbackc('a');
  45   r2 = fbuf.sputbackc('b');
  46
  47   fbuf.close();
  48
  49   VERIFY( r1 != filebuf::traits_type::eof() );
  50   VERIFY( r2 == filebuf::traits_type::eof() );
  51 }
  52
  53 int main()
  54 {
  55   test01();
  56   return 0;
  57 }