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Re: [bug #23996] arithmetic overflow when using -used

From: James Youngman
Subject: Re: [bug #23996] arithmetic overflow when using -used
Date: Mon, 1 Sep 2008 02:11:07 +0100

On Sun, Aug 24, 2008 at 12:01 AM, Andreas Schwab <address@hidden> wrote:
> A good compiler (like gcc 4.3) will optimize this to 0, effectively
> removing the overflow check.  Checking for overflow after the fact is
> not possible in C.

I'd welcome an alternative patch for the subtraction operation.


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