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Date: Sun, 04 Sep 2011 12:22:35 +0200
From: Matthias Andree <mandree@FreeBSD.org>
Organization: FreeBSD
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To: Ivan Klymenko <fidaj@ukr.net>
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Cc: freebsd-ports@FreeBSD.org
Subject: Re: [ANNOUNCE]: clang compiling ports, take 2
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Am 04.09.2011 10:45, schrieb Ivan Klymenko:
> В Sun, 04 Sep 2011 09:34:33 +0200
> Matthias Andree <mandree@FreeBSD.org> пишет:
> 
>> Am 04.09.2011 09:12, schrieb Ivan Klymenko:
>>
>>> Maybe this will help:
>>> *rdup_entry = *rdup_entry;
>>
>> This is just guessing and probably triggers the same warning unless
>> it's volatile.
>>
>> Have the original author look at it.
> 
> This is not guesswork.

It is DANGEROUS guesswork. Assigning stuff to itself is pointless, so
this is a code bug.

The only valid exception I know is if you're writing back data to a
command register in a peripheral device, which isn't the case here.

Fix the bug, not the symptom!