[Xquartz-changes] [191] AppleSGLX/trunk/glxcurrent.c

[source_changes at macosforge.org]

Revision: 191
          http://trac.macosforge.org/projects/xquartz/changeset/191
Author:   gstaplin at apple.com
Date:     2009-02-19 19:51:10 -0800 (Thu, 19 Feb 2009)
Log Message:
-----------
Avoid a crash if the previous current context was NULL, 
and the new current context is NULL, by avoiding the 
dereference of a NULL pointer.

Modified Paths:
--------------
    AppleSGLX/trunk/glxcurrent.c

Modified: AppleSGLX/trunk/glxcurrent.c
===================================================================
--- AppleSGLX/trunk/glxcurrent.c	2009-02-20 03:41:00 UTC (rev 190)
+++ AppleSGLX/trunk/glxcurrent.c	2009-02-20 03:51:10 UTC (rev 191)
@@ -152,8 +152,10 @@
 	 * cannot be NULL, therefore if they are the same, gc is not
 	 * NULL and not the dummy.
 	 */
-	gc->currentDrawable = draw;
-	gc->currentReadable = read;
+	if(gc) {
+	    gc->currentDrawable = draw;
+	    gc->currentReadable = read;
+	}
     } else {
 	
 	if (oldGC != &dummyContext) {
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