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

   1 // Copyright (C) 2004, 2009, 2012 Free Software Foundation
   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 3, 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 COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // The ARM simulator does not provide support for "fstat", which
  19 // causes "in_avail" to return an incorrect value.
  20 // { dg-do run { xfail arm*-*-elf arm*-*-eabi } }
  21
  22 // { dg-require-binary-io "" }
  23 // { dg-require-fileio "" }
  24
  25 // 27.6.1.3 unformatted input functions
  26 // @require@ %-*.tst %-*.txt
  27 // @diff@ %-*.tst %-*.txt
  28
  29 #include <istream>
  30 #include <fstream>
  31 #include <testsuite_hooks.h>
  32
  33 // libstdc++/6746
  34 void test13()
  35 {
  36   using namespace std;
  37   bool test __attribute__((unused)) = true;
  38   streamsize sum = 0;
  39   wifstream ifs("wistream_unformatted-1.tst");
  40
  41   // test01
  42   size_t i = ifs.rdbuf()->in_avail();
  43   VERIFY( i != 0 );
  44
  45   // test02
  46   streamsize extracted;
  47   do
  48     {
  49       wchar_t buf[1024];
  50       extracted = ifs.readsome(buf, sizeof(buf) / sizeof(wchar_t));
  51       sum += extracted;
  52     }
  53   while (ifs.good() && extracted);
  54   VERIFY( sum != 0 );
  55 }
  56
  57 int
  58 main()
  59 {
  60   test13();
  61   return 0;
  62 }