libstdc++-v3/testsuite/27_io/basic_istream/ignore/char/7220.cc

   1 // 1999-08-11 bkoz
   2
   3 // Copyright (C) 1999-2016 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 3, 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 COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 // 27.6.1.3 unformatted input functions
  21
  22 #include <istream>
  23 #include <sstream>
  24 #include <testsuite_hooks.h>
  25
  26 // libstdc++/70220
  27 void
  28 test10()
  29 {
  30   using namespace std;
  31   bool test __attribute__((unused)) = true;
  32   typedef string string_type;
  33   typedef stringbuf stringbuf_type;
  34   typedef istream istream_type;
  35
  36   streamsize n;
  37   string_type  input("abcdefg\n");
  38   stringbuf_type sbuf(input);
  39   istream_type  istr(&sbuf);
  40
  41   istr.ignore(0);
  42   if (istr.gcount() != 0)
  43     test = false;
  44   VERIFY( test );
  45
  46   istr.ignore(0, 'b');
  47   if (istr.gcount() != 0)
  48     test = false;
  49   VERIFY( test );
  50
  51   istr.ignore();        // Advance to next position.
  52   istr.ignore(0, 'b');
  53   if ((n=istr.gcount()) != 0)
  54     test = false;
  55   VERIFY( test );
  56
  57   if (istr.peek() != 'b')
  58     test = false;
  59   VERIFY( test );
  60 }
  61
  62 int
  63 main()
  64 {
  65   test10();
  66   return 0;
  67 }