libstdc++-v3/testsuite/27_io/basic_istream/extractors_arithmetic/char/9555-ia.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 = 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( false );
  58     }
  59 }
  60
  61 int main()
  62 {
  63   bool b = true;
  64   short s = -4;
  65   unsigned short us = 4;
  66   int i = -45;
  67   unsigned int ui = 45;
  68   long l = -456;
  69   unsigned long ul = 456;
  70   float f = 3.4;
  71   double d = 3.45;
  72   long double ld = 3.456;
  73
  74   testthrow(b);
  75   testthrow(s);
  76   testthrow(us);
  77   testthrow(i);
  78   testthrow(ui);
  79   testthrow(l);
  80   testthrow(ul);
  81   testthrow(f);
  82   testthrow(d);
  83   testthrow(ld);
  84
  85   return 0;
  86 }