fix PrintTree() debug helper for compiled Cython

diff --git a/Cython/Compiler/Visitor.py b/Cython/Compiler/Visitor.py
index c9d8bae..f30127f 100644 (file)
--- a/Cython/Compiler/Visitor.py
+++ b/Cython/Compiler/Visitor.py
@@ -519,7 +519,7 @@ class PrintTree(TreeVisitor):
 
     def __call__(self, tree, phase=None):
         print("Parse tree dump at phase '%s'" % phase)
-        self._visit(tree)
+        self.visit(tree)
         return tree
 
     # Don't do anything about process_list, the defaults gives