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Date: Fri, 16 Dec 2011 19:28:29 +0400
From: Solar Designer <solar@...nwall.com>
To: john-dev@...ts.openwall.com
Subject: Re: 1.7.9-jumbo
Jim -
On Thu, Dec 15, 2011 at 05:07:46PM -0600, jfoug wrote:
> Did you want me to try to localize the -O0 in john.c to just cygwin builds?
> I had not thought of that, until I was writing the reply. It makes no
> difference at all on speed, and only a few bytes on size. But for whatever
> reason, it places the code properly, or aligns the stack, or properly builds
> a 'something' that keeps those builds from coring. The strange thing, is
> you can test all day long, and they work. However, when you try to actually
> 'run' data (reading from a file of passwords, etc), it dies.
>
> I may be the only one experiencing this issue, so it could be that I simply
> keep patching the official make (which is what I was doing before). But I
> will work with whatever you want it to be.
Localizing -O0 for john.c to just the Cygwin build is not very
important. It'd be better to find and fix the actual bug, eliminating
the need for the -O0 even for Cygwin.
Can you at least identify the instruction (and nearby instruction
sequence) where the process crashes? And see why that instruction
crashes (what type of fault it is - e.g., NULL pointer dereference,
out of bounds access, unaligned SSE2 access, or something else).
Thanks,
Alexander
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