libstdc++-v3/testsuite/27_io/basic_istream/extractors_character/char/9555-ic.cc

   1 // Copyright (C) 2003 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 2, 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 COPYING.  If not, write to the Free
  16 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  17 // USA.
  18
  19 // As a special exception, you may use this file as part of a free software
  20 // library without restriction.  Specifically, if other files instantiate
  21 // templates or use macros or inline functions from this file, or you compile
  22 // this file and link it with other files to produce an executable, this
  23 // file does not by itself cause the resulting executable to be covered by
  24 // the GNU General Public License.  This exception does not however
  25 // invalidate any other reasons why the executable file might be covered by
  26 // the GNU General Public License.
  27
  28 #include <istream>
  29 #include <streambuf>
  30 #include <testsuite_hooks.h>
  31
  32 struct buf: std::streambuf
  33 {
  34   virtual int_type overflow(int_type)
  35   { throw 0; }
  36 };
  37
  38 template<typename T>
  39 void testthrow(T arg)
  40 {
  41   bool test __attribute__((unused)) = true;
  42   buf b;
  43   std::istream is(&b);
  44   is.exceptions(std::ios::badbit);
  45
  46   try
  47     {
  48       is >> arg;
  49     }
  50   catch(int)
  51       {
  52         // Expected return is zero.
  53         VERIFY( is.bad() );
  54       }
  55   catch(...)
  56     {
  57       VERIFY( test = false );
  58     }
  59 }
  60
  61 int main()
  62 {
  63   char c = 'a';
  64   unsigned char uc = 'a';
  65   signed char sc = 'a';
  66   char* cp = &c;
  67   signed char* scp = &sc;
  68   unsigned char* ucp = &uc;
  69
  70   testthrow(c);
  71   testthrow(uc);
  72   testthrow(sc);
  73   testthrow(cp);
  74   testthrow(scp);
  75   testthrow(ucp);
  76
  77   return 0;
  78 }