[Bf-blender-cvs] SVN commit: /data/svn/bf-blender [42020] trunk/blender/source/blender/nodes /composite/nodes/node_composite_common.c: Fix for crasher when node group tree datablocks are missing.

[Lukas Toenne]

Revision: 42020
          http://projects.blender.org/scm/viewvc.php?view=rev&root=bf-blender&revision=42020
Author:   lukastoenne
Date:     2011-11-20 16:57:50 +0000 (Sun, 20 Nov 2011)
Log Message:
-----------
Fix for crasher when node group tree datablocks are missing.

Modified Paths:
--------------
    trunk/blender/source/blender/nodes/composite/nodes/node_composite_common.c

Modified: trunk/blender/source/blender/nodes/composite/nodes/node_composite_common.c
===================================================================
--- trunk/blender/source/blender/nodes/composite/nodes/node_composite_common.c	2011-11-20 16:38:23 UTC (rev 42019)
+++ trunk/blender/source/blender/nodes/composite/nodes/node_composite_common.c	2011-11-20 16:57:50 UTC (rev 42020)
@@ -119,6 +119,9 @@
 	bNodeSocket *sock;
 	bNodeStack *ns;
 	
+	if (!ngroup)
+		return NULL;
+	
 	/* initialize the internal node tree execution */
 	exec = ntreeCompositBeginExecTree(ngroup, 0);
 	
@@ -137,7 +140,8 @@
 {
 	bNodeTreeExec *gexec= (bNodeTreeExec*)nodedata;
 	
-	ntreeCompositEndExecTree(gexec, 0);
+	if (gexec)
+		ntreeCompositEndExecTree(gexec, 0);
 }
 
 /* Copy inputs to the internal stack.
@@ -191,6 +195,9 @@
 {
 	bNodeTreeExec *exec= (bNodeTreeExec*)nodedata;
 	
+	if (!exec)
+		return;
+	
 	/* XXX same behavior as trunk: all nodes inside group are executed.
 	 * it's stupid, but just makes it work. compo redesign will do this better.
 	 */