From c1fb1d98d2a123c1e9ac1aba5cc19d1dbc8418c9 Mon Sep 17 00:00:00 2001
From: "brendan%mozilla.org" <brendan%mozilla.org>
Date: Thu, 24 Feb 2005 18:59:41 +0000
Subject: [PATCH] Fix almost-10-year-old lastIndex bug reported by Sjoerd
 Visscher <sjoerd@w3future.com> (283477, r=me).

---
 js/src/jsstr.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/js/src/jsstr.c b/js/src/jsstr.c
index 58c505cfcdbf..a44dffb5e639 100644
--- a/js/src/jsstr.c
+++ b/js/src/jsstr.c
@@ -1039,8 +1039,8 @@ str_lastIndexOf(JSContext *cx, JSObject *obj, uintN argc, jsval *argv,
             d = js_DoubleToInteger(d);
             if (d < 0)
                 i = 0;
-            else if (d > textlen - patlen)
-                i = textlen - patlen;
+            else if (d > textlen)
+                i = textlen;
             else
                 i = (jsint)d;
         }