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Forums » Using PS3's To Forge Site Certificates » For those wondering "Why Playstation 3s?"
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« Anyone get a replacement cert?  
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Steve
I'm a PC, so shut up
Consultant
join:2001-03-10
Yorba Linda, CA

reply to TSI Gabe
Re: For those wondering "Why Playstation 3s?"

said by TSI Gabe See Profile :

No Actually removing a printf simply displaying the value being calculated completely removed the md5 function from the code.
The compiler did what it was supposed to do: if you were calling a function that had no side effects, it knew that it could eliminate the call without having any effect on correct operation. It was right.

Benchmarking is a known science; calling your operation in a way that insists on a side effect (as I'm sure you found) lets you get the effect you want.

Steve
--
Stephen J. Friedl | Unix Wizard | Microsoft Security MVP | Orange County, California USA | my web site


TSI Gabe
Premium,VIP
join:2007-01-03
Chatham, ON
reply to Steve
No Actually removing a printf simply displaying the value being calculated completely removed the md5 function from the code.


Steve
I'm a PC, so shut up
Consultant
join:2001-03-10
Yorba Linda, CA

reply to TSI Gabe
said by TSI Gabe See Profile :

That was the C compiler optimizing my code into doing nothing quite literally. Sometimes those C optimizations don't really help...
It's far more likely that your optimizer found a bug in your code than you found a bug in the optimizer.

The problem with compilers is that they do exactly what you ask them too bad women and children won't follow that example

Steve
--
Stephen J. Friedl | Unix Wizard | Microsoft Security MVP | Orange County, California USA | my web site
Forums » Using PS3's To Forge Site Certificates« Anyone get a replacement cert?  


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