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From: "Michael R. Crusoe" <crusoe@debian.org>
Date: Mon, 17 Feb 2025 19:40:07 +0100
Subject: pythoncapi_compat: don't define Py_NULL if it is already defined
Forwarded: https://github.com/python/mypy/pull/18699
---
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 cee282d..c49af7a 100644
--- a/mypyc/lib-rt/pythoncapi_compat.h
+++ b/mypyc/lib-rt/pythoncapi_compat.h
@@ -33,6 +33,7 @@ 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.
@@ -42,6 +43,7 @@ extern "C" {
#else
# define _Py_NULL NULL
#endif
+#endif
// Cast argument to PyObject* type.
#ifndef _PyObject_CAST
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