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From: markspace <-@.>
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Subject: Re: Arithmetic overflow checking
Date: Tue, 12 Jul 2011 09:26:49 -0700
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On 7/12/2011 6:16 AM, Stefan Ram wrote:
> "BartC"<bc@freeuk.com>  writes:
>> a+b overflows, but then what?
>
>    This can only be answered given the requirements
>    specification of a specific project.


What I think he's saying is there's no way physically detect the 
overflow in a language like C which has no exceptions.  You'd have to at 
least introduce some sort of global flag.

   int c = a + b;
   if( GLOBAL_OVERFLOW_FLAG ) {
     printf( "bugger..." );
   }