--- gdb/varobj.c	(/mirrors/gdb_mainline)	(revision 3134)
+++ gdb/varobj.c	(/patches/gdb/varobj_update_memleak/gdb_mainline)	(revision 3134)
@@ -1143,6 +1143,9 @@ varobj_update (struct varobj **varp, str
     }
   *cv = 0;
 
+  VEC_free (varobj_p, stack);
+  VEC_free (varobj_p, result);
+
   if (type_changed)
     return -2;
   else