From ffae614cda8df36bd8b5905798a09b7d84b2ff8a Mon Sep 17 00:00:00 2001
From: Eclips4 <kirill.bast9@mail.ru>
Date: Sat, 29 Oct 2022 22:00:31 +0300
Subject: [PATCH 1/2] gh-98852: Add extra type check to avoid a bug with
 parameterizing generics

---
 Lib/typing.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Lib/typing.py b/Lib/typing.py
index 95bd61c7f8c61f..990fbe85ec0a12 100644
--- a/Lib/typing.py
+++ b/Lib/typing.py
@@ -1440,6 +1440,8 @@ def _determine_new_args(self, args):
             substfunc = getattr(old_arg, '__typing_subst__', None)
             if substfunc:
                 new_arg = substfunc(new_arg_by_param[old_arg])
+            elif not isinstance(old_arg, (_GenericAlias, GenericAlias, types.UnionType)):
+                new_arg = old_arg
             else:
                 subparams = getattr(old_arg, '__parameters__', ())
                 if not subparams:

From 920c3f4453691e8618aac66f19ce0bc989a5b377 Mon Sep 17 00:00:00 2001
From: "blurb-it[bot]" <43283697+blurb-it[bot]@users.noreply.github.com>
Date: Sat, 29 Oct 2022 19:29:36 +0000
Subject: [PATCH 2/2] =?UTF-8?q?=F0=9F=93=9C=F0=9F=A4=96=20Added=20by=20blu?=
 =?UTF-8?q?rb=5Fit.?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../next/Library/2022-10-29-19-29-35.gh-issue-98852.jR9qxY.rst   | 1 +
 1 file changed, 1 insertion(+)
 create mode 100644 Misc/NEWS.d/next/Library/2022-10-29-19-29-35.gh-issue-98852.jR9qxY.rst

diff --git a/Misc/NEWS.d/next/Library/2022-10-29-19-29-35.gh-issue-98852.jR9qxY.rst b/Misc/NEWS.d/next/Library/2022-10-29-19-29-35.gh-issue-98852.jR9qxY.rst
new file mode 100644
index 00000000000000..c3b05c66450033
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2022-10-29-19-29-35.gh-issue-98852.jR9qxY.rst
@@ -0,0 +1 @@
+Add extra type check in ``_determine_new_args`` to avoid a bug with parameterizing generics.