Use concrete macro for "tp_finalize" usage everywhere instead of Python version check.

Cython/Compiler/TypeSlots.py

@@ -873,7 +873,7 @@ slot_table = (
     EmptySlot("tp_weaklist"),
     EmptySlot("tp_del"),
     EmptySlot("tp_version_tag"),
-    EmptySlot("tp_finalize", ifdef="PY_VERSION_HEX >= 0x030400a1"),
+    EmptySlot("tp_finalize", ifdef="CYTHON_USE_TP_FINALIZE"),
 )
 
 #------------------------------------------------------------------------------------------

Cython/Utility/AsyncGen.c

@@ -620,7 +620,7 @@ static PyTypeObject __pyx__PyAsyncGenASendType_type = {
     0,                                          /* tp_weaklist */
     0,                                          /* tp_del */
     0,                                          /* tp_version_tag */
-#if PY_VERSION_HEX >= 0x030400a1
+#if CYTHON_USE_TP_FINALIZE
     0,                                          /* tp_finalize */
 #endif
 };
@@ -729,7 +729,7 @@ static PyTypeObject __pyx__PyAsyncGenWrappedValueType_type = {
     0,                                          /* tp_weaklist */
     0,                                          /* tp_del */
     0,                                          /* tp_version_tag */
-#if PY_VERSION_HEX >= 0x030400a1
+#if CYTHON_USE_TP_FINALIZE
     0,                                          /* tp_finalize */
 #endif
 };
@@ -1006,7 +1006,7 @@ static PyTypeObject __pyx__PyAsyncGenAThrowType_type = {
     0,                                          /* tp_weaklist */
     0,                                          /* tp_del */
     0,                                          /* tp_version_tag */
-#if PY_VERSION_HEX >= 0x030400a1
+#if CYTHON_USE_TP_FINALIZE
     0,                                          /* tp_finalize */
 #endif
 };

Cython/Utility/Coroutine.c

@@ -1071,7 +1071,7 @@ static void __Pyx_Coroutine_dealloc(PyObject *self) {
     if (gen->resume_label >= 0) {
         // Generator is paused or unstarted, so we need to close
         PyObject_GC_Track(self);
-#if PY_VERSION_HEX >= 0x030400a1
+#if CYTHON_USE_TP_FINALIZE
         if (PyObject_CallFinalizerFromDealloc(self))
 #else
         Py_TYPE(gen)->tp_del(self);
@@ -1106,7 +1106,7 @@ static void __Pyx_Coroutine_del(PyObject *self) {
         return;
     }
 
-#if PY_VERSION_HEX < 0x030400a1
+#if !CYTHON_USE_TP_FINALIZE
     // Temporarily resurrect the object.
     assert(self->ob_refcnt == 0);
     self->ob_refcnt = 1;
@@ -1187,7 +1187,7 @@ static void __Pyx_Coroutine_del(PyObject *self) {
     // Restore the saved exception.
     __Pyx_ErrRestore(error_type, error_value, error_traceback);
 
-#if PY_VERSION_HEX < 0x030400a1
+#if !CYTHON_USE_TP_FINALIZE
     // Undo the temporary resurrection; can't use DECREF here, it would
     // cause a recursive call.
     assert(self->ob_refcnt > 0);
@@ -1430,7 +1430,7 @@ static PyTypeObject __pyx_CoroutineAwaitType_type = {
     0,                                  /*tp_weaklist*/
     0,                                  /*tp_del*/
     0,                                  /*tp_version_tag*/
-#if PY_VERSION_HEX >= 0x030400a1
+#if CYTHON_USE_TP_FINALIZE
     0,                                  /*tp_finalize*/
 #endif
 };
@@ -2055,7 +2055,7 @@ static PyTypeObject __Pyx__PyExc_StopAsyncIteration_type = {
     0,                                  /*tp_weaklist*/
     0,                                  /*tp_del*/
     0,                                  /*tp_version_tag*/
-#if PY_VERSION_HEX >= 0x030400a1
+#if CYTHON_USE_TP_FINALIZE
     0,                                  /*tp_finalize*/
 #endif
 };

Cython/Utility/CythonFunction.c

@@ -722,7 +722,7 @@ static PyTypeObject __pyx_CyFunctionType_type = {
     0,                                  /*tp_weaklist*/
     0,                                  /*tp_del*/
     0,                                  /*tp_version_tag*/
-#if PY_VERSION_HEX >= 0x030400a1
+#if CYTHON_USE_TP_FINALIZE
     0,                                  /*tp_finalize*/
 #endif
 };
@@ -1195,7 +1195,7 @@ static PyTypeObject __pyx_FusedFunctionType_type = {
     0,                                  /*tp_weaklist*/
     0,                                  /*tp_del*/
     0,                                  /*tp_version_tag*/
-#if PY_VERSION_HEX >= 0x030400a1
+#if CYTHON_USE_TP_FINALIZE
     0,                                  /*tp_finalize*/
 #endif
 };