From 13a896b6a762e48c2396e3dc9f2e794020f4e6e8 Mon Sep 17 00:00:00 2001
From: Till Hofmann <hofmann@kbsg.rwth-aachen.de>
Date: Fri, 6 Sep 2019 10:17:59 +0200
Subject: [PATCH] Use 0 instead of nullptr for python's tp_print for Python 3.8

In Python 3.8, the reserved `tp_print` slot was changed from a function
pointer to a number.  In C, there is no `nullptr`; either a 0 or NULL
casts automatically to both pointers and numbers.

Replace `nullptr` with `0` for `tp_print` to be compatible with Python
3.8.
---
 libpyclingo/pyclingo.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libpyclingo/pyclingo.cc b/libpyclingo/pyclingo.cc
index 9480203a..6a7068cc 100644
--- a/libpyclingo/pyclingo.cc
+++ b/libpyclingo/pyclingo.cc
@@ -1177,7 +1177,7 @@ PyTypeObject ObjectBase<T>::type = {
     sizeof(T),                                  // tp_basicsize
     0,                                          // tp_itemsize
     PythonDetail::Get_tp_dealloc<T>::value,     // tp_dealloc
-    nullptr,                                    // tp_print
+    0,                                          // tp_print
     nullptr,                                    // tp_getattr
     nullptr,                                    // tp_setattr
     nullptr,                                    // tp_compare