From: Jamey Sharp <jamey@minilop.net>
Date: Sun, 10 Jun 2007 23:19:59 +0000 (-0700)
Subject: Fix locking in _XimGetWindowEventmask.
X-Git-Url: http://gitweb.freedesktop.org/?p=xorg/lib/libX11.git;a=commitdiff;h=c2f88cdf5cd9c94b77e5bfdac572b5ac06ab4aa8

Fix locking in _XimGetWindowEventmask.

Now that XFilterEvent drops the Display lock before invoking callback
functions, _XimGetWindowEventmask is called without the lock held. So
when it called _XGetWindowAttributes, a variant of XGetWindowAttributes
that does not lock the Display, Xlib/XCB would assert:

xcb_xlib.c:50: xcb_xlib_unlock: Assertion `c->xlib.lock' failed.

Should fix Gentoo #156367, Ubuntu #87947, Debian #427296. And others?
---

--- a/modules/im/ximcp/imDefLkup.c
+++ b/modules/im/ximcp/imDefLkup.c
@@ -466,7 +466,7 @@ _XimGetWindowEventmask(
     Xim			im = (Xim )ic->core.im;
     XWindowAttributes	atr;
 
-    if (!_XGetWindowAttributes(im->core.display, ic->core.focus_window, &atr))
+    if (!XGetWindowAttributes(im->core.display, ic->core.focus_window, &atr))
 	return 0;
     return (EVENTMASK)atr.your_event_mask;
 }