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  • #79

Closed
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Opened Sep 23, 2018 by yshui@yshui

Race condition in poll_for_response results in event not being delivered

In function poll_for_response, if a event arrives after poll_for_event and before xcb_poll_for_reply64, that event will be read in xcb_poll_for_reply64, but not be put into Xlib's queue. This can be a big problem if the application proceed to block on select() because it thinks no events are available.

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Reference: xorg/lib/libx11#79