From c5d24dd9bd4ce165e5ebdbcd8a58a63d9d4ac999 Mon Sep 17 00:00:00 2001
From: danieldg <danieldg@e03df62e-2008-0410-955e-edbf42e46eb7>
Date: Sat, 6 Feb 2010 16:35:07 +0000
Subject: [PATCH] Fail adding of new mode when its prefix is already in use

git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@12386 e03df62e-2008-0410-955e-edbf42e46eb7
---
 src/mode.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/mode.cpp b/src/mode.cpp
index 7aeaae1dc..637eb7ba5 100644
--- a/src/mode.cpp
+++ b/src/mode.cpp
@@ -644,6 +644,9 @@ bool ModeParser::AddMode(ModeHandler* mh)
 	if ((mh->GetPrefix() == ',') || (mh->GetPrefix() == ':') || (mh->GetPrefix() == '#'))
 		return false;
 
+	if (mh->GetPrefix() && FindPrefix(mh->GetPrefix()))
+		return false;
+
 	mh->GetModeType() == MODETYPE_USER ? mask = MASK_USER : mask = MASK_CHANNEL;
 	pos = (mh->GetModeChar()-65) | mask;
 
-- 
2.39.5