[Bug 49860] Dungeons & Dragons Online 64bit client fails to start in wine-5.16 and 5.17

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=49860

--- Comment #1 from mata <sutupud at yahoo.com> ---
Created attachment 68361
  --> https://bugs.winehq.org/attachment.cgi?id=68361
DDO startup crash fix patch

Update: It's still happening on wine 5.18, up to the current master
(5d5102f8498413f4b7e11f7da0509e7717fb3735)

The problematic code is definitely in call_user_apc_dispatcher
dlls/ntdll/unix/signal_x86_64.c

If I change the code to more or less what it did before
a686759f1d7aee67b5786b72e81a4e4fcf3f3c02 (see attached patch), then it starts
to work again (despite a compilation time warning:
wine-git/dlls/ntdll/unix/signal_x86_64.c:2023:1: warning: ‘noreturn’ function
does return).

So something seems to be not completely right in the assembly code.

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