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Date:	Fri, 23 Jul 2010 09:41:00 +0100
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Subject:	Re: When will the next gcc come out
From:	Andy Koppe <andy DOT koppe AT gmail DOT com>
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On 23 July 2010 09:24, Huang Bambo wrote:
> The current gcc( 4.3.4 ) has some bug with O3 option. it will
> optimized out some needed code in some case.
> I meet this bug when I compile ACE library.
> If I use O2 option, everything goes fine.

Have you got any actual evidence for this being a bug in gcc rather
than in your program? It's quite common that subtle program bugs get
exposed differently by different optimisations. This might also be
relevant:

http://en.wikipedia.org/wiki/Aliasing_(computing)#Conflicts_with_optimization

Andy

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