libstdc++-v3/testsuite/27_io/basic_istream/readsome/wchar_t/8258.cc

   1 // Copyright (C) 2004-2024 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 <streambuf>
  22 #include <testsuite_hooks.h>
  23
  24 // libstdc++/8258
  25 class mybuf : public std::basic_streambuf<wchar_t>
  26 { };
  27
  28 void test11()
  29 {
  30   using namespace std;
  31   wchar_t arr[10];
  32   mybuf sbuf;
  33   basic_istream<wchar_t, char_traits<wchar_t> > istr(&sbuf);
  34
  35   VERIFY( istr.rdstate() == ios_base::goodbit );
  36   VERIFY( istr.readsome(arr, 10) == 0 );
  37   VERIFY( istr.rdstate() == ios_base::goodbit );
  38 }
  39
  40 int
  41 main()
  42 {
  43   test11();
  44   return 0;
  45 }