From 44648a371445eaf42a19ef7418ae7438cc3b7286 Mon Sep 17 00:00:00 2001
From: Tim Conley <timothy.conley@temporal.io>
Date: Mon, 20 Oct 2025 09:40:08 -0700
Subject: [PATCH 1/3] Linecache source is unavailable for frozen modules when
 global modules is None

---
 Lib/linecache.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Lib/linecache.py b/Lib/linecache.py
index ef73d1aa99774a..ef3b2d9136b4d2 100644
--- a/Lib/linecache.py
+++ b/Lib/linecache.py
@@ -123,9 +123,12 @@ def updatecache(filename, module_globals=None):
     if _source_unavailable(filename):
         return []
 
-    if filename.startswith('<frozen ') and module_globals is not None:
+    if filename.startswith('<frozen '):
         # This is a frozen module, so we need to use the filename
         # from the module globals.
+        if module_globals is None:
+            return []
+
         fullname = module_globals.get('__file__')
         if fullname is None:
             return []

From dbe641374ddd064ec584d0a7a08b5ac5b6e21201 Mon Sep 17 00:00:00 2001
From: "blurb-it[bot]" <43283697+blurb-it[bot]@users.noreply.github.com>
Date: Tue, 28 Oct 2025 17:43:53 +0000
Subject: [PATCH 2/3] =?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/2025-10-28-17-43-51.gh-issue-140228.8kfHhO.rst  | 1 +
 1 file changed, 1 insertion(+)
 create mode 100644 Misc/NEWS.d/next/Library/2025-10-28-17-43-51.gh-issue-140228.8kfHhO.rst

diff --git a/Misc/NEWS.d/next/Library/2025-10-28-17-43-51.gh-issue-140228.8kfHhO.rst b/Misc/NEWS.d/next/Library/2025-10-28-17-43-51.gh-issue-140228.8kfHhO.rst
new file mode 100644
index 00000000000000..1b130f6e4e88af
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2025-10-28-17-43-51.gh-issue-140228.8kfHhO.rst
@@ -0,0 +1 @@
+LineCache - Avoid making useless filesystem calls for frozen modules when the global module cache is not present.

From 405ea8f210a0ea9b21440c0686924a14dab0bfb9 Mon Sep 17 00:00:00 2001
From: Tian Gao <gaogaotiantian@hotmail.com>
Date: Tue, 28 Oct 2025 22:21:30 -0700
Subject: [PATCH 3/3] Update linecache documentation for frozen modules

---
 .../next/Library/2025-10-28-17-43-51.gh-issue-140228.8kfHhO.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Misc/NEWS.d/next/Library/2025-10-28-17-43-51.gh-issue-140228.8kfHhO.rst b/Misc/NEWS.d/next/Library/2025-10-28-17-43-51.gh-issue-140228.8kfHhO.rst
index 1b130f6e4e88af..b3b692bae62c5d 100644
--- a/Misc/NEWS.d/next/Library/2025-10-28-17-43-51.gh-issue-140228.8kfHhO.rst
+++ b/Misc/NEWS.d/next/Library/2025-10-28-17-43-51.gh-issue-140228.8kfHhO.rst
@@ -1 +1 @@
-LineCache - Avoid making useless filesystem calls for frozen modules when the global module cache is not present.
+Avoid making unnecessary filesystem calls for frozen modules in :mod:`linecache` when the global module cache is not present.