Index: trunk/psModules/src/objects/pmPSFtry.c
===================================================================
--- trunk/psModules/src/objects/pmPSFtry.c	(revision 15254)
+++ trunk/psModules/src/objects/pmPSFtry.c	(revision 15562)
@@ -5,6 +5,6 @@
  *  @author EAM, IfA
  *
- *  @version $Revision: 1.49 $ $Name: not supported by cvs2svn $
- *  @date $Date: 2007-10-09 19:26:25 $
+ *  @version $Revision: 1.50 $ $Name: not supported by cvs2svn $
+ *  @date $Date: 2007-11-10 01:09:20 $
  *
  *  Copyright 2004 Maui High Performance Computing Center, University of Hawaii
@@ -81,4 +81,11 @@
 }
 
+bool psMemCheckPSFtry(psPtr ptr)
+{
+    PS_ASSERT_PTR(ptr, false);
+    return ( psMemGetDeallocator(ptr) == (psFreeFunc) pmPSFtryFree);
+}
+
+
 // build a pmPSFtry for the given model:
 // - fit each source with the free-floating model
@@ -249,4 +256,7 @@
 bool pmPSFtryMetric (pmPSFtry *psfTry, float RADIUS)
 {
+    PS_ASSERT_PTR_NON_NULL(psfTry, false);
+    PS_ASSERT_PTR_NON_NULL(psfTry->sources, false);
+
     // the measured (aperture - fit) magnitudes (dA == psfTry->metric)
     //   depend on both the true ap-fit (dAo) and the bias in the sky measurement:
@@ -346,4 +356,7 @@
 bool pmPSFFromPSFtry (pmPSFtry *psfTry)
 {
+    PS_ASSERT_PTR_NON_NULL(psfTry, false);
+    PS_ASSERT_PTR_NON_NULL(psfTry->sources, false);
+
     pmPSF *psf = psfTry->psf;