Re: Exception Handling in Release Mode

From:
"Chris Uzdavinis" <cuzdav@gmail.com>
Newsgroups:
comp.lang.c++.moderated
Date:
Thu, 15 Feb 2007 11:50:45 CST
Message-ID:
<1171555541.589539.40580@v45g2000cwv.googlegroups.com>
On Feb 15, 6:49 am, "Moahn" <ramamo...@rediffmail.com> wrote:

I am learning the Exception Handling in C++. I wrote a small
program using Exception Handling. I am using Vistual Studio 6.


That's an old compiler and not an especially good one in terms of
language compliance. I'd suggest learning c++ using a newer version.

  It is working fine in Win32 Debug build, but it is not catching the
exception in Win32Release mode.


"Exceptions" as reported by the operating system (originating from
hardware interrupts or from os-detected program errors) are NOT the
type
of exception that c++ exception handlers are designed to catch.

A C++ exception handler is designed to catch exceptions that are
created
in C++ code by evaluating a "throw" expression. It is outside the
realm
of C++ when you start handling hardware/OS errors, and it's only a
feature
of your compiler that it can catch them at all. That is, you're
depending
on non-standard behavior from a particular compiler implementation.

int main(int argc, char* argv[])
{
  int i = 0;

  try
  {
       int m = 17/i;
  }
  catch(...)
  {
       cout<<"Main - Catch"<<endl;
  }
  cout <<"End of Main" <<endl;

}

Could you please explain, why the Exception is not caught in the
Win32Release mode.??


It's not a C++ exception, it's a FPU error. If you don't see a
"throw some_object" you shouldn't expect it to be caught.

Chris

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