From a81f12f9bd4d429fa73dd602d9fc1319a32a59a0 Mon Sep 17 00:00:00 2001
From: Daniele Varrazzo <daniele.varrazzo@gmail.com>
Date: Thu, 29 Dec 2016 21:43:04 +0100
Subject: [PATCH] Don't set tp_compare on Python 3

The slot is unused in Py < 3.5, and replaced by pg_as_async in Py 3.5.
---
 psycopg/typecast.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/psycopg/typecast.c b/psycopg/typecast.c
index 1cae869f..e6e2faa9 100644
--- a/psycopg/typecast.c
+++ b/psycopg/typecast.c
@@ -491,7 +491,11 @@ PyTypeObject typecastType = {
     0,          /*tp_print*/
     0,          /*tp_getattr*/
     0,          /*tp_setattr*/
+#if PY_VERSION_HEX < 0x03000000
     typecast_cmp, /*tp_compare*/
+#else
+    0,          /*tp_reserved*/
+#endif
     typecast_repr, /*tp_repr*/
     0,          /*tp_as_number*/
     0,          /*tp_as_sequence*/