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From Cliff Woolley <>
Subject Re: What evil lurks beneath macros... (an AIX xlc optimizer bug)
Date Fri, 16 Aug 2002 18:57:06 GMT
On Fri, 16 Aug 2002, Bill Stoddard wrote:

> And here is that same code with the macros unrolled. The xlc optimizer
> chokes on this. avoid_xlc_bug() just returns 1 and does nothing else (and
> makes the optimzer happy again). This is just nasty.

Can you be more specific about what the bug is, please?  What is it that
gets evaluated incorrectly by the incorrectly-optimized code?


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