--- pdb.py.orig	Wed Mar 12 08:49:14 2014
+++ pdb.py	Wed Mar 12 08:49:30 2014
@@ -1128,9 +1128,12 @@
         for i in range(n):
             name = co.co_varnames[i]
             if name in dict:
-                self.message('%s = %r' % (name, dict[name]))
-            else:
-                self.message('%s = *** undefined ***' % (name,))
+                try:
+                    self.message('%s = %r' % (name, dict[name]))
+                except Exception:
+                    self.message('%s = *** repr failed: %s ***' % (name,))
+                else:
+                    self.message('%s = *** undefined ***' % (name,))
     do_a = do_args
 
     def do_retval(self, arg):