With libX11, the library calls an I/O error handler if the connection to
the server breaks. The default I/O error handler prints an error message
and calls exit(). This can be seen when running a "pre-xcb" compton
against Xephyr and then closing the Xephyr window:
XIO: fatal IO error 11 (Resource temporarily unavailable) on X server ":1"
after 241 requests (241 known processed) with 0 events remaining.
The current compton would just continue running. After this commit, it
instead exits with this message:
handle_queued_x_events(): X11 server connection broke (error 1)
Signed-off-by: Uli Schlachter <psychon@znc.in>
9bb3327549