all Nodes inherit from object, so should CmpNode

diff --git a/Cython/Compiler/ExprNodes.py b/Cython/Compiler/ExprNodes.py
index fd7a3f727fa2ff90281f1835115edf63b1092d19..00d8f2e979f89bee159429e73d95443a71ad6a4a 100644 (file)
--- a/Cython/Compiler/ExprNodes.py
+++ b/Cython/Compiler/ExprNodes.py
@@ -4460,7 +4460,7 @@ richcmp_constants = {
     ">=": "Py_GE",
 }
 
-class CmpNode:
+class CmpNode(object):
     #  Mixin class containing code common to PrimaryCmpNodes
     #  and CascadedCmpNodes.