From 17913151edce45803f88c06daa4fa70c46550bd5 Mon Sep 17 00:00:00 2001
From: Bram Matthys <syzop@vulnscan.org>
Date: Sat, 29 Jan 2022 14:38:11 +0100
Subject: [PATCH] Fix ./unrealircd hot-patch: if a patch does not cleanly apply
 then don't apply it. The dry-run code was missing the most obvious case..

---
 unrealircd.in | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/unrealircd.in b/unrealircd.in
index 58a205688..15f8a81ca 100644
--- a/unrealircd.in
+++ b/unrealircd.in
@@ -242,6 +242,11 @@ elif [ "$1" = "hot-patch" -o "$1" = "cold-patch" ] ; then
 		exit 1
 	fi
 
+	if ! patch --dry-run -p1 -N <patch 1>/dev/null 2>&1; then
+		echo "Patch failed to apply (no files changed)"
+		exit 1
+	fi
+
 	if ! patch -p1 <patch; then
 		echo "Patch failed to apply"
 		exit 1