libstdc++-v3/testsuite/27_io/basic_istream/exceptions/wchar_t/9561.cc

   1 // Copyright (C) 2004-2017 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 <istream>
  19 #include <streambuf>
  20 #include <testsuite_hooks.h>
  21 #include <testsuite_io.h>
  22
  23 // libstdc++/9561
  24 void test01()
  25 {
  26   using namespace std;
  27
  28   __gnu_test::fail_wstreambuf b;
  29   std::wistream strm (&b);
  30   strm.exceptions (std::wios::badbit);
  31   wchar_t i = 0;
  32
  33   try
  34     {
  35       i = strm.get();
  36       i = strm.get();
  37       i = strm.get();
  38     }
  39   catch (__gnu_test::underflow_error&)
  40     {
  41       // strm should throw facet_error and not do anything else
  42       VERIFY(strm.bad());
  43     }
  44   catch (...)
  45     {
  46       VERIFY( false );
  47     }
  48
  49   VERIFY( i == L's' );
  50 }
  51
  52
  53 int main()
  54 {
  55   test01();
  56   return 0;
  57 }