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

   1 // Copyright (C) 2004-2016 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 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 // 27.6.1.3 unformatted input functions
  19
  20 #include <istream>
  21 #include <sstream>
  22 #include <testsuite_hooks.h>
  23
  24 // libstdc++/70220
  25 void
  26 test10()
  27 {
  28   using namespace std;
  29   bool test __attribute__((unused)) = true;
  30   typedef wstring string_type;
  31   typedef wstringbuf stringbuf_type;
  32   typedef wistream istream_type;
  33
  34   streamsize n;
  35   string_type  input(L"abcdefg\n");
  36   stringbuf_type sbuf(input);
  37   istream_type  istr(&sbuf);
  38
  39   istr.ignore(0);
  40   if (istr.gcount() != 0)
  41     test = false;
  42   VERIFY( test );
  43
  44   istr.ignore(0, L'b');
  45   if (istr.gcount() != 0)
  46     test = false;
  47   VERIFY( test );
  48
  49   istr.ignore();        // Advance to next position.
  50   istr.ignore(0, L'b');
  51   if ((n=istr.gcount()) != 0)
  52     test = false;
  53   VERIFY( test );
  54
  55   if (istr.peek() != L'b')
  56     test = false;
  57   VERIFY( test );
  58 }
  59
  60 int
  61 main()
  62 {
  63   test10();
  64   return 0;
  65 }