On Monday, 12 September 2016 10:32:59 UTC+1, Jeffrey Walton wrote:
>
> On Mon, Sep 12, 2016 at 5:02 AM, Andrew Marlow <[email protected]
> <javascript:>> wrote:
> > Many thanks for releasing version 564. I see there are lots of
> improvements
> > :-)
> >
>
> Yeah, the Solaris folks got a lot of improvements. You guys deserve it
> for enduring SunCC.
>
Gee, thanks! It's not my choice of compiler. The compiler is forced on us.
We are using another third party library where the vendor does not support
GCC, only the Sun compiler.
[snip]
>
> > 3) The test program core dumps when run with the v option.
> > Testing MessageDigest algorithm SHA-384.
> > ..signal BUS (invalid address alignment) in CryptoPP::SHA512::Transform
> at
> > line 27 in file "sha.cpp"
>
[stack trace snipped]
> OK, this is good stuff here. I can't duplicate in my modest test
> environment, but its obvious 'data = 0xffffffff7fffc1ec' is only
> aligned to 2-bytes, while you likely need 8-byte or 16-byte alignment
> due to SSE2.
>
> Here's the first - and only - thing you should do at the moment:
>
> gmake distclean
> cp config.recommend config.h
>
>
gmake -j 4 ...
>
> ./cryptest.exe v
>
I just tried that. It broke in the same place in the same way.
> ./cryptest.exe tv all
>
> That should isolate it to the known undefined behavior we are
> [currently] carrying around. If it fixes the issue, then problem
> solved until we can make config.recommend the default (Crypto++ 5.7
> when it arrives).
>
> The hairier result is, it does not fix the problem. In this case, we
> will need to investigate why the caller is not using
> OptimalDataAlignment(). Also see
> https://www.cryptopp.com/docs/ref/class_s_h_a3.html.
>
> I am out of my depth here. I see that for the failing test SHA3 is being
used and that OptimalDataAlignment returns GetAlignmentOf<word64>();. It
looks like this returns sizeof(word64). I can't see what's wrong....
> Jeff
>
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