libstdc++-v3/testsuite/27_io/basic_istream/extractors_other/wchar_t/9555-io.cc

   1 // Copyright (C) 2004-2015 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
  19 #include <istream>
  20 #include <streambuf>
  21 #include <testsuite_hooks.h>
  22
  23 struct buf: std::wstreambuf
  24 {
  25   virtual int_type overflow(int_type)
  26   { throw 0; }
  27 };
  28
  29 template<typename T>
  30 void testthrow(T arg)
  31 {
  32   bool test __attribute__((unused)) = true;
  33   buf b;
  34   std::wistream is(&b);
  35   is.exceptions(std::wios::badbit);
  36
  37   try
  38     {
  39       is >> arg;
  40     }
  41   catch(int)
  42     {
  43       // Expected return is zero.
  44       VERIFY( is.bad() );
  45     }
  46   catch(...)
  47     {
  48       VERIFY( false );
  49     }
  50 }
  51
  52 int main()
  53 {
  54   buf b;
  55
  56   testthrow(&b);
  57
  58   return 0;
  59 }