From d1cb1067a82b11280204e36b695e786a5a3ca221 Mon Sep 17 00:00:00 2001
From: "Miss Islington (bot)"
 <31488909+miss-islington@users.noreply.github.com>
Date: Thu, 14 Dec 2017 09:30:45 -0800
Subject: bpo-32277: Fix exception raised from chmod(...,
 follow_symlinks=False) (GH-4797) (#4869)

(cherry picked from commit 233ef249cc5c18d796fb581747179c5e062b4083)
---
 Misc/NEWS.d/next/Library/2017-12-11-09-53-14.bpo-32277.jkKiVC.rst | 3 +++
 Modules/posixmodule.c                                             | 1 +
 2 files changed, 4 insertions(+)
 create mode 100644 Misc/NEWS.d/next/Library/2017-12-11-09-53-14.bpo-32277.jkKiVC.rst

diff --git a/Misc/NEWS.d/next/Library/2017-12-11-09-53-14.bpo-32277.jkKiVC.rst b/Misc/NEWS.d/next/Library/2017-12-11-09-53-14.bpo-32277.jkKiVC.rst
new file mode 100644
index 0000000..765527a
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2017-12-11-09-53-14.bpo-32277.jkKiVC.rst
@@ -0,0 +1,3 @@
+Raise ``NotImplementedError`` instead of ``SystemError`` on platforms where
+``chmod(..., follow_symlinks=False)`` is not supported.  Patch by Anthony
+Sottile.
diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
index ee27fa4..821b64c 100644
--- a/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@ -2790,6 +2790,7 @@ os_chmod_impl(PyObject *module, path_t *path, int mode, int dir_fd,
                                                    dir_fd, follow_symlinks);
             else
                 follow_symlinks_specified("chmod", follow_symlinks);
+            return NULL;
         }
         else
 #endif
-- 
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