[Xcb] [Bug 94108] hang waiting for a reply message (xcb_wait_for_reply)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94108

Bp_at_wind <bertrand.piolin at windriver.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |REOPENED

--- Comment #8 from Bp_at_wind <bertrand.piolin at windriver.com> ---
(In reply to Uli Schlachter from comment #2)
> Do you also have backtraces for other threads? If libxcb waits on a
> pthread_cond_wait(), some other thread should be waiting in poll().
The other running threads are basically part of the UI, how would you recommend
to debug those exchange of messages?
is there any Debug flag we could activate to track all these messages and find
which one had no reply?
> 
> You didn't mention your libxcb version. Could you also try libxcb from git?
> (I'm asking because of
> https://cgit.freedesktop.org/xcb/libxcb/commit/
> ?id=5b40681c887192307f3ae147d2158870aa79c05f and
> https://cgit.freedesktop.org/xcb/libxcb/commit/
> ?id=f85661c3bca97faa72431df92a3867be39a74e23 which both fix hangs involving
> xcb_wait_for_special_event())
this test was done and the issue still occurs.

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