libstdc++-v3/testsuite/27_io/basic_filebuf/showmanyc/char/9533-2.cc

   1 // Copyright (C) 2003 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 2, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING.  If not, write to the Free
  16 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  17 // USA.
  18
  19 // 27.8.1.4 Overridden virtual functions
  20
  21 #include <fstream>
  22 #include <testsuite_hooks.h>
  23
  24 // libstdc++/9533
  25 void test_02()
  26 {
  27   using namespace std;
  28   bool test __attribute__((unused)) = true;
  29   const char* name = "tmp_file1";
  30   const char* strlit = "0123456789";
  31
  32   filebuf fb;
  33
  34   int written = 0;
  35   fb.open(name, ios_base::out | ios_base::trunc);
  36   for (int i = 0; i < BUFSIZ; ++i)
  37     written += fb.sputn(strlit, 10);
  38   fb.close();
  39
  40   int read = 0;
  41   int n = 0;
  42   char buf[10];
  43   fb.open(name, ios_base::in);
  44   do
  45     {
  46       n = fb.sgetn(buf, sizeof(buf));
  47       read += n;
  48     }
  49   while (n);
  50
  51   VERIFY( read == written );
  52 }
  53
  54 int
  55 main()
  56 {
  57   test_02();
  58   return 0;
  59 }