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Date: Wed, 09 Dec 2009 14:38:55 +0000
From: Dave Korn <dave DOT korn DOT cygwin AT googlemail DOT com>
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Subject: Re: I want my FPE!
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Mark Geisert wrote:
> Mark Geisert writes:
>> I've tried many things [...]
> 
> ...but I neglected the possibility of compiler expression optimization.  I
> replaced "1E200L * 1E200L" with "d * d" where d is initialized with 1E200L. 
> Voila, SIGFPE results and is trapped the way I wanted to.

  Ah, the old "Where did my delay loop go?" problem :-)

> I'm still looking for a way to similarly handle integer overflow exceptions.

  Try -ftrapv.  This is supposed to do what you want, but I'm not sure how
much care and attention it gets, so you may discover bugginess.

    cheers,
      DaveK


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