[cairo-bugs] [Bug 98883] BadAccess errors in ShmAttach due to thread races with XNextRequest() usage in cairo-xlib-surface-shm.c

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=98883

--- Comment #1 from Dave Gilbert <freedesktop at treblig.org> ---
I wonder whether the fix of setting the pool->attached = XNextRequest(dpy)
after the XShmAttach would work.  That's effectively delaying the shmdt until
after whatever the next X request is after the attach has completed; who knows
what that is, but as long as there is one (ahem, that might be a bit of an
assumption; could we just add a dummy?) then it should complete.  Not got a
clue what the perf would be.

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