From 98e30aaa860432222960aa042cb40bcc7c834116 Mon Sep 17 00:00:00 2001
From: Watson <watson1978@gmail.com>
Date: Thu, 5 Jul 2012 13:41:02 +0900
Subject: [PATCH] [fix #123] receiver object may be changed within
 NSArray#rindex block

---
 NSArray.m | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/NSArray.m b/NSArray.m
index c4640a94d..d5b12866c 100644
--- a/NSArray.m
+++ b/NSArray.m
@@ -564,6 +564,11 @@
 	    if (RTEST(test)) {
 		return LONG2NUM(i);
 	    }
+	    const long n = [rcv count];
+	    if (n < i) {
+		// Array was modified.
+		i = n;
+	    }
 	}
     }
     else {