From f3246ccebb0ccb8667fc6f143e69ecc2a9e3fb3c Mon Sep 17 00:00:00 2001
From: Yusuke Endoh <mame@ruby-lang.org>
Date: Sun, 4 May 2025 01:47:03 +0900
Subject: [PATCH] Fix an ASAN error in Array#difference

[Bug #21303]
---
 array.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/array.c b/array.c
index 8c75abeabf..b0a874bc83 100644
--- a/array.c
+++ b/array.c
@@ -5613,7 +5613,7 @@ rb_ary_difference_multi(int argc, VALUE *argv, VALUE ary)
         VALUE elt = rb_ary_elt(ary, i);
         for (j = 0; j < argc; j++) {
             if (is_hash[j]) {
-                if (rb_hash_stlike_lookup(argv[j], RARRAY_AREF(ary, i), NULL))
+                if (rb_hash_stlike_lookup(argv[j], elt, NULL))
                     break;
             }
             else {