Index: trunk/psModules/src/objects/pmSourceContour.c
===================================================================
--- trunk/psModules/src/objects/pmSourceContour.c	(revision 14938)
+++ trunk/psModules/src/objects/pmSourceContour.c	(revision 15562)
@@ -6,6 +6,6 @@
  *  @author EAM, IfA: significant modifications.
  *
- *  @version $Revision: 1.9 $ $Name: not supported by cvs2svn $
- *  @date $Date: 2007-09-21 00:09:05 $
+ *  @version $Revision: 1.10 $ $Name: not supported by cvs2svn $
+ *  @date $Date: 2007-11-10 01:09:20 $
  *
  *  Copyright 2004 Maui High Performance Computing Center, University of Hawaii
@@ -220,4 +220,5 @@
 psArray *pmSourceContour (psImage *image, int xc, int yc, float threshold)
 {
+    PS_ASSERT_PTR_NON_NULL(image, NULL);
 
     int xR, yR, x0, x1, x0s, x1s;