[pypy-svn] r42206 - pypy/dist/pypy/lang/prolog/interpreter

[arigo at codespeak.net]

Author: arigo
Date: Fri Apr 20 16:37:10 2007
New Revision: 42206

Modified:
   pypy/dist/pypy/lang/prolog/interpreter/engine.py
Log:
Add an XXX comment.


Modified: pypy/dist/pypy/lang/prolog/interpreter/engine.py
==============================================================================
--- pypy/dist/pypy/lang/prolog/interpreter/engine.py	(original)
+++ pypy/dist/pypy/lang/prolog/interpreter/engine.py	Fri Apr 20 16:37:10 2007
@@ -42,6 +42,8 @@
         return self.vars[index]
 
     def setvar(self, index, val):
+        # XXX check if oldval != val
+        #     it happens all the time in get_last_var_in_chain_and_val()
         oldval = self.vars[index]
         self.vars[index] = val
         # only trail for variables that have a chance to get restored