[Bug 52213] Tests for mfreadwrite crash after pthread_exit

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=52213

--- Comment #7 from Giovanni Mascellani <gmascellani at codeweavers.com> ---
I updated the debugging patch so that the crash is displayed in a minimal
example, without involving winegstreamer which is not the real problem here.

The crash seems to happen because pthread_exit() is called inside a signal
handler (which is executed in an alternate stack). Basically, the only thing
pthread_exit() is supposed to do is to launch an internal exception to unwind
the stack, and it might be unable to properly handle being on an alternate
stack.

The new debugging patch has a sleep() call before exit(), because otherwise the
exit_group() call might arrive before SIGSEGV is delivered and the segmentation
fault might be hidden. With this sleep() call the crash is consistently
reproducible on my system.

-- 
Do not reply to this email, post in Bugzilla using the
above URL to reply.
You are receiving this mail because:
You are watching all bug changes.