# HG changeset patch
# User Robert Bradshaw <robertwb@math.washington.edu>
# Date 1223449525 25200
# Node ID fe6e3dd9d513f26cef376a17210a927b47931b09
# Parent  e95e3d2cb88dea47e420408c5b619a6b2e140d34
Fix ticket #72, (compiler crash on bad code)

--- a/Cython/Compiler/Optimize.py	Tue Oct 07 23:41:34 2008 -0700
+++ b/Cython/Compiler/Optimize.py	Wed Oct 08 00:05:25 2008 -0700
@@ -39,12 +39,12 @@
             if is_common_value(cond.operand1, cond.operand1):
                 if isinstance(cond.operand2, ExprNodes.ConstNode):
                     return cond.operand1, [cond.operand2]
-                elif hasattr(cond.operand2, 'entry') and cond.operand2.entry.is_const:
+                elif hasattr(cond.operand2, 'entry') and cond.operand2.entry and cond.operand2.entry.is_const:
                     return cond.operand1, [cond.operand2]
             if is_common_value(cond.operand2, cond.operand2):
                 if isinstance(cond.operand1, ExprNodes.ConstNode):
                     return cond.operand2, [cond.operand1]
-                elif hasattr(cond.operand1, 'entry') and cond.operand1.entry.is_const:
+                elif hasattr(cond.operand1, 'entry') and cond.operand1.entry and cond.operand1.entry.is_const:
                     return cond.operand2, [cond.operand1]
         elif (isinstance(cond, ExprNodes.BoolBinopNode) 
                 and cond.operator == 'or'):