[Bug 55054] WineServer crash. (complete_async_poll: Assertion `output->count == signaled_count' failed)

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=55054

--- Comment #4 from Fabian Maurer  ---
Created attachment 74683
  --> https://bugs.winehq.org/attachment.cgi?id=74683
Debug patch

Hello, sorry for the late reply.
Do you already know how to compile Wine from source? Pure 64bit Wine should be
fine, unless you have 32bit programs.
Then I propose you run wineserver under valgrind, see later (you might need to
install valgrind first).

Please compile wine-8.11 with the patch I attached, with the flags "-g -O0".
It probably doesn't give much more information, but it should be better than
nothing.

Make sure all Wine processes are terminated and wineserver isn't running
anymore.
Then in a terminal run
valgrind {PATH TO BUILD FOLDER}/server/wineserver -f &> wine.log
This command should keep running and only terminate when you get the crash,
but due to my patch you will get a "Segmentation fault (core dumped)" instead
of the assert.
When that happens, please upload the wine.log it created.