libstdc++-v3/testsuite/27_io/basic_istream/readsome/char/6746-2.cc

   1 // 1999-08-11 bkoz
   2
   3 // Copyright (C) 1999, 2000, 2001, 2002, 2003 Free Software Foundation
   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 // 27.6.1.3 unformatted input functions
  22 // @require@ %-*.tst %-*.txt
  23 // @diff@ %-*.tst %-*.txt
  24
  25 #include <cstring> // for strncmp,...
  26 #include <istream>
  27 #include <sstream>
  28 #include <fstream>
  29 #include <testsuite_hooks.h>
  30
  31 // libstdc++/6746
  32 void test13()
  33 {
  34   using namespace std;
  35   bool test __attribute__((unused)) = true;
  36   streamsize sum = 0;
  37   ifstream ifs("istream_unformatted-1.tst");
  38
  39   // test01
  40   size_t i = ifs.rdbuf()->in_avail();
  41   VERIFY( i != 0 );
  42
  43   // test02
  44   streamsize extracted;
  45   do
  46     {
  47       char buf[1024];
  48       extracted = ifs.readsome(buf, sizeof buf);
  49       sum += extracted;
  50     }
  51   while (ifs.good() && extracted);
  52   VERIFY( sum != 0 );
  53 }
  54
  55 int
  56 main()
  57 {
  58   test13();
  59   return 0;
  60 }