enable Py_TPFLAGS_HAVE_FINALIZE flag for extension types that need it

diff --git a/Cython/Compiler/TypeSlots.py b/Cython/Compiler/TypeSlots.py
index 2038338..c82c66a 100644 (file)
--- a/Cython/Compiler/TypeSlots.py
+++ b/Cython/Compiler/TypeSlots.py
@@ -405,6 +405,8 @@ class TypeFlagsSlot(SlotDescriptor):
             value += "|Py_TPFLAGS_BASETYPE"
         if scope.needs_gc():
             value += "|Py_TPFLAGS_HAVE_GC"
+        if scope.needs_finalisation():
+            value += "|Py_TPFLAGS_HAVE_FINALIZE"
         return value