libstdc++-v3/testsuite/27_io/basic_istream/sentry/char/53984.cc

   1 // Copyright (C) 2017 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 #include <streambuf>
  19 #include <istream>
  20 #include <testsuite_hooks.h>
  21
  22 struct SB : std::streambuf
  23 {
  24   virtual int_type underflow() { throw 1; }
  25 };
  26
  27 void
  28 test01()
  29 {
  30   SB sb;
  31   std::istream is(&sb);
  32   int i;
  33   is >> i;
  34   VERIFY( is.bad() );
  35 }
  36
  37 int
  38 main()
  39 {
  40   test01();
  41 }