libstdc++-v3/testsuite/27_io/basic_istream/extractors_arithmetic/char/9555-ia.cc

   1 // Copyright (C) 2003-2021 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::streambuf
  24 {
  25   virtual int_type overflow(int_type)
  26   { throw 0; }
  27 };
  28
  29 template<typename T>
  30 void testthrow(T arg)
  31 {
  32   buf b;
  33   std::istream is(&b);
  34   is.exceptions(std::ios::badbit);
  35
  36   try
  37     {
  38       is >> arg;
  39     }
  40   catch(int)
  41       {
  42         // Expected return is zero.
  43         VERIFY( is.bad() );
  44       }
  45   catch(...)
  46     {
  47       VERIFY( false );
  48     }
  49 }
  50
  51 int main()
  52 {
  53   bool b = true;
  54   short s = -4;
  55   unsigned short us = 4;
  56   int i = -45;
  57   unsigned int ui = 45;
  58   long l = -456;
  59   unsigned long ul = 456;
  60   float f = 3.4;
  61   double d = 3.45;
  62   long double ld = 3.456;
  63
  64   testthrow(b);
  65   testthrow(s);
  66   testthrow(us);
  67   testthrow(i);
  68   testthrow(ui);
  69   testthrow(l);
  70   testthrow(ul);
  71   testthrow(f);
  72   testthrow(d);
  73   testthrow(ld);
  74
  75   return 0;
  76 }