libstdc++-v3/testsuite/27_io/basic_istream/sentry/char/3.cc

   1 // 1999-10-14 bkoz
   2
   3 // Copyright (C) 1999-2023 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
  21 // 27.6.1.1.2 class basic_istream::sentry
  22
  23 #include <istream>
  24 #include <sstream>
  25 #include <testsuite_hooks.h>
  26
  27 // libstdc++/9562
  28 void
  29 test03()
  30 {
  31   std::stringbuf strbuf01;
  32   std::istream strm1(&strbuf01);
  33   const std::istream::sentry sentry1(strm1);
  34
  35   VERIFY( bool(sentry1) == false );
  36 }
  37
  38 int main()
  39 {
  40   test03();
  41   return 0;
  42 }