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Re: [PATCH] tail: avoid theoretically undefined behavior

From: Jim Meyering
Subject: Re: [PATCH] tail: avoid theoretically undefined behavior
Date: Wed, 28 Dec 2011 22:30:03 +0100

Pádraig Brady wrote:

> On 12/28/2011 05:56 PM, Jim Meyering wrote:
>> Can anyone name a real system on which forming a pointer like this,
>> "buffer + (size_t)(-1)" actually provokes a trap or some other real problem?
> I don't know of particular hardware where this would trap
> (alpha can be configured to trap on integer overflow I think).
> Your change is worth it for clarity at least.

My only doubt is whether to include the word "theoretically"
in the one-line summary ;-)

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