Date: Thu, 09 Apr 2015 11:55:34 +0200 From: magnum <john.magnum@...hmail.com> To: john-dev@...ts.openwall.com Subject: Re: New SIMD generations, code layout On 2015-04-09 11:50, Frank Dittrich wrote: > On 04/09/2015 11:43 AM, magnum wrote: >> BTW one example of intermittant bug is if there's any align(16) still in >> there - there's a chance such thing will happen to become aligned for >> AVX2 but less chance for MIC. Those should result in segfault though, if >> you only got a FAIL this is probably not it. > > Can memdbg builds be enhanced in a way that makes sure the returned > address matches the required alignment, but not a higher alignment? > For that purpose, memdbg would need to allocate somewhat more memory, > and return an appropriate pointer. > That way, these bugs woudn't be intermittent anymore (at least for > memdbg builds). Good idea, memdbg should always do this. BTW my next to-do is run AVX2 with ASan and/or memdbg. magnum
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