From 232cb8cb3a0aa3add13488f1ce41de70485545ef Mon Sep 17 00:00:00 2001
From: nicm <nicm@openbsd.org>
Date: Sat, 12 Oct 2024 08:13:52 +0000
Subject: [PATCH] Do not rename a buffer to itself, GitHub issue 4181.

---
 usr.bin/tmux/paste.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/usr.bin/tmux/paste.c b/usr.bin/tmux/paste.c
index 27f61a1b29c..f7993ff8a55 100644
--- a/usr.bin/tmux/paste.c
+++ b/usr.bin/tmux/paste.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: paste.c,v 1.46 2023/02/07 10:56:04 nicm Exp $ */
+/* $OpenBSD: paste.c,v 1.47 2024/10/12 08:13:52 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
@@ -241,6 +241,8 @@ paste_rename(const char *oldname, const char *newname, char **cause)
 	}
 
 	pb_new = paste_get_name(newname);
+	if (pb_new == pb)
+		return (0);
 	if (pb_new != NULL)
 		paste_free(pb_new);
 
-- 
2.20.1