From 045adb1ad893ce350ac40e180da44523d03361a0 Mon Sep 17 00:00:00 2001
From: "Miss Islington (bot)"
 <31488909+miss-islington@users.noreply.github.com>
Date: Tue, 16 Jan 2024 12:53:02 +0100
Subject: [PATCH] [3.12] gh-114077: Fix OverflowError in socket.sendfile() when
 pass count >2GiB (GH-114079) (GH-114110)

(cherry picked from commit d4dfad2aa9e76038302b0c5a29ebacc2723ed50d)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
---
 Lib/socket.py                                                   | 2 +-
 .../next/Library/2024-01-15-12-12-54.gh-issue-114077.KcVnfj.rst | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)
 create mode 100644 Misc/NEWS.d/next/Library/2024-01-15-12-12-54.gh-issue-114077.KcVnfj.rst

diff --git a/Lib/socket.py b/Lib/socket.py
index 321fcda5150..42ee1307732 100644
--- a/Lib/socket.py
+++ b/Lib/socket.py
@@ -382,7 +382,7 @@ class socket(_socket.socket):
                     if timeout and not selector_select(timeout):
                         raise TimeoutError('timed out')
                     if count:
-                        blocksize = count - total_sent
+                        blocksize = min(count - total_sent, blocksize)
                         if blocksize <= 0:
                             break
                     try:
diff --git a/Misc/NEWS.d/next/Library/2024-01-15-12-12-54.gh-issue-114077.KcVnfj.rst b/Misc/NEWS.d/next/Library/2024-01-15-12-12-54.gh-issue-114077.KcVnfj.rst
new file mode 100644
index 00000000000..dba086f3a8a
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-01-15-12-12-54.gh-issue-114077.KcVnfj.rst
@@ -0,0 +1,2 @@
+Fix possible :exc:`OverflowError` in :meth:`socket.socket.sendfile` when pass
+*count* larger than 2 GiB on 32-bit platform.