From 59728b7232d24f9411bdbf634fa676e9514a9cee Mon Sep 17 00:00:00 2001
From: "Michael R. Crusoe" <crusoe@debian.org>
Date: Mon, 17 Feb 2025 19:40:07 +0100
Subject: [PATCH] pythoncapi_compat: don't define Py_NULL if it is already
 defined

---
 mypyc/lib-rt/pythoncapi_compat.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/mypyc/lib-rt/pythoncapi_compat.h b/mypyc/lib-rt/pythoncapi_compat.h
index e534c1cbb7cc..f94e50a3479f 100644
--- a/mypyc/lib-rt/pythoncapi_compat.h
+++ b/mypyc/lib-rt/pythoncapi_compat.h
@@ -34,6 +34,7 @@ extern "C" {
 #  define _Py_CAST(type, expr) ((type)(expr))
 #endif
 
+#ifndef _Py_NULL
 // Static inline functions should use _Py_NULL rather than using directly NULL
 // to prevent C++ compiler warnings. On C23 and newer and on C++11 and newer,
 // _Py_NULL is defined as nullptr.
@@ -43,6 +44,7 @@ extern "C" {
 #else
 #  define _Py_NULL NULL
 #endif
+#endif
 
 // Cast argument to PyObject* type.
 #ifndef _PyObject_CAST