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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: David Malcolm <dmalcolm@redhat.com>
Date: Fri, 19 Jun 2020 16:02:24 +0200
Subject: [PATCH] 00155: avoid allocating thunks in ctypes unless absolutely
 necessary

Avoid allocating thunks in ctypes unless absolutely necessary, to avoid
generating SELinux denials on "import ctypes" and "import uuid" when
embedding Python within httpd
See https://bugzilla.redhat.com/show_bug.cgi?id=814391
---
 Lib/ctypes/__init__.py | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/Lib/ctypes/__init__.py b/Lib/ctypes/__init__.py
index dae408a867..f4178c0731 100644
--- a/Lib/ctypes/__init__.py
+++ b/Lib/ctypes/__init__.py
@@ -266,11 +266,6 @@ def _reset_cache():
     # _SimpleCData.c_char_p_from_param
     POINTER(c_char).from_param = c_char_p.from_param
     _pointer_type_cache[None] = c_void_p
-    # XXX for whatever reasons, creating the first instance of a callback
-    # function is needed for the unittests on Win64 to succeed.  This MAY
-    # be a compiler bug, since the problem occurs only when _ctypes is
-    # compiled with the MS SDK compiler.  Or an uninitialized variable?
-    CFUNCTYPE(c_int)(lambda: None)
 
 def create_unicode_buffer(init, size=None):
     """create_unicode_buffer(aString) -> character array