[Bug 46471] amd k10 keepass2 dotnet472 divide by zero in encryption

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=46471

--- Comment #7 from noabody at yahoo.com ---
Which still doesn't explain why it works in wine-stable on the exact same
prefix.  

Clearly gnutls is throwing the divide by zero in staging but what component is
making a function call to divide by zero?  I suppose I'll have to figure out
valgrind to get more information.

I recently notified mono-project they were rolling out a distribution that
requires sse4.1, in their AOT "Ahead Of Time", per-machine, compiler
optimization.  They said it was an issue with LLVM and added a check to only
run AOT via LLVM if sse4.1 is available.

That said, mono can launch Keepass and the database decrypts without a problem.
 All of this is mounting evidence that rules out gnutls as the source in so far
as it divides by zero because it's being asked to divide by zero.  To take it
one step further, I built both nettle and gnutls locally then took
libgnutls.so.30 and libnettle.so.6 and put them in the LD_LIBRARY= path.

GNUTLS_CPUID_OVERRIDE=0x1 GNUTLS_DEBUG_LEVEL=9 LD_LIBRARY_PATH=$HOME/.local/lib
wine KeePass.exe

Still divide by zero.  I'm confident that the flagged libraries are not
optimized for SSSE3 because, if they were, my machine would be incapable of
compiling them successfully.  I had already built wine staging locally and it
still had the same problem.

I do appreciate the help, and have spent a great deal of time troubleshooting
this problem on my own.  The weight of that doesn't suggest a problem with
ancillary libraries but something in wine-staging.


What I believe I'm hearing is that current versions of wine not longer stub
functions that are optimized for SSSE3 by dotnet/mono and possibly keepass
(since it has a history of its own).  That mono itself will not work with AMD
K10 architecture.  That's just writing on the wall, though.  

The K10 is unquestionably a serviceable architecture for general purpose work. 
It's the last vestige of early multi-core 64-bit architecture.  Single-core
32-bit non-sse2 went into disuse some time ago.

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