From 5884cf88d3317500051c8a80b4c94bcdd7ab78e6 Mon Sep 17 00:00:00 2001
From: mittorn <mittorn@sibmail.com>
Date: Sun, 14 Feb 2021 21:33:41 +0000
Subject: [PATCH] crtlib: fix undefined behaviour when stripping extenstion
 from empty string

---
 public/crtlib.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/public/crtlib.c b/public/crtlib.c
index 281d11fe..bec512d2 100644
--- a/public/crtlib.c
+++ b/public/crtlib.c
@@ -858,7 +858,11 @@ void COM_StripExtension( char *path )
 {
 	size_t	length;
 
-	length = Q_strlen( path ) - 1;
+	length = Q_strlen( path );
+
+	if( length > 0 )
+		length--;
+
 	while( length > 0 && path[length] != '.' )
 	{
 		length--;