From 0c531b34d54914be105d7ede14def237a0d19730 Mon Sep 17 00:00:00 2001
From: Stefan Behnel <scoder@users.berlios.de>
Date: Sat, 24 May 2008 10:33:28 +0200
Subject: [PATCH] invalidate type cache in Py2.6+

---
 Cython/Compiler/Nodes.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Cython/Compiler/Nodes.py b/Cython/Compiler/Nodes.py
index db1370a0..89e87437 100644
--- a/Cython/Compiler/Nodes.py
+++ b/Cython/Compiler/Nodes.py
@@ -2101,6 +2101,11 @@ class CClassDefNode(StatNode, BlockNode):
         # default values of method arguments.
         if self.body:
             self.body.generate_execution_code(code)
+            # in Py2.6+, we need to invalidate the type cache
+            code.putln("#if PY_VERSION_HEX >= 0x02060000")
+            code.putln("(%s)->tp_flags &= ~Py_TPFLAGS_VALID_VERSION_TAG;" %
+                       self.entry.type.typeptr_cname)
+            code.putln("#endif")
             
     def annotate(self, code):
         if self.body:
-- 
2.26.2