diff --git a/ChangeLog b/ChangeLog
index 9e0f211c7a..6049cd0c90 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Sat Jul 20 15:22:38 2013  Koichi Sasada  <ko1@atdot.net>
+
+	* array.c (rb_ary_resize): use simple memcpy because there are no new
+	  references.
+
 Sat Jul 20 15:02:51 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* safe.c (ruby_safe_level_4_warning): define for old extension
diff --git a/array.c b/array.c
index 30786f8f90..eeeb989a2b 100644
--- a/array.c
+++ b/array.c
@@ -623,7 +623,6 @@ ary_make_shared(VALUE ary)
     }
 }
 
-
 static VALUE
 ary_make_substitution(VALUE ary)
 {
@@ -1642,7 +1641,7 @@ rb_ary_resize(VALUE ary, long len)
 	VALUE tmp[RARRAY_EMBED_LEN_MAX];
 	MEMCPY(tmp, ARY_HEAP_PTR(ary), VALUE, len);
 	ary_discard(ary);
-	ary_memcpy(ary, 0, len, tmp);
+	MEMCPY((VALUE *)ARY_EMBED_PTR(ary), tmp, VALUE, len); /* WB: no new reference */
         ARY_SET_EMBED_LEN(ary, len);
     }
     else {