[Bug 53321] snakeqr: Unhandled page fault on write access in A_SHAFinal

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=53321

Bernhard Übelacker <bernhardu at mailbox.org> changed:

           What    |Removed                     |Added
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                 CC|                            |bernhardu at mailbox.org

--- Comment #3 from Bernhard Übelacker <bernhardu at mailbox.org> ---
It looks like doing the link step with Crinkler adds
a custom dll loader to the executable.
That loader seems to try to lookup ntdll.NtdllDefWindowProc_A but cannot
find it and erroneously takes the first export of ntdll, which is A_SHAFinal.

Therefore A_SHAFinal gets called later with wrong parameter and
therefore crashes.

This can be seen by adding this stub entry to dlls/ntdll/ntdll.spec:
+@ stub NtdllDefWindowProc_A

Then the output of snake.exe changes to:
wine: Call from 7BC243E0 to unimplemented function
ntdll.dll.NtdllDefWindowProc_A, aborting


Unfortunately I have currently no Idea how either forwarding this call
from ntdll to user32 can/should work.

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