--- a/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/BeanLinker.java	Wed May 18 20:17:48 2016 +0530
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/BeanLinker.java	Wed May 18 17:37:34 2016 +0200
@@ -113,7 +113,7 @@
             // Some languages won't have a notion of manipulating collections. Exposing "length" on arrays as an
             // explicit property is beneficial for them.
             // REVISIT: is it maybe a code smell that StandardOperation.GET_LENGTH is not needed?
-            setPropertyGetter("length", MethodHandles.arrayLength(clazz), ValidationType.IS_ARRAY);
+            setPropertyGetter("length", MethodHandles.arrayLength(clazz), ValidationType.EXACT_CLASS);
         } else if(List.class.isAssignableFrom(clazz)) {
             setPropertyGetter("length", GET_COLLECTION_LENGTH, ValidationType.INSTANCE_OF);
         }
@@ -544,7 +544,7 @@
         // Otherwise, create a binding based on the actual type of the argument with an appropriate guard.
         if(clazz.isArray()) {
             return new GuardedInvocationComponent(MethodHandles.arrayLength(clazz).asType(callSiteType),
-                    Guards.isArray(0, callSiteType), ValidationType.IS_ARRAY);
+                    Guards.isArray(0, callSiteType), ValidationType.EXACT_CLASS);
         } if(Collection.class.isAssignableFrom(clazz)) {
             return new GuardedInvocationComponent(GET_COLLECTION_LENGTH.asType(callSiteType), Guards.asType(
                     COLLECTION_GUARD, callSiteType), Collection.class, ValidationType.INSTANCE_OF);

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/JDK-8157250.js	Wed May 18 17:37:34 2016 +0200
@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8157250: BeanLinker assumes fixed array type linkage
+ *
+ * @test
+ * @run
+ */
+
+var intArray = Java.type("int[]")
+var doubleArray = Java.type("double[]")
+var arrs = [new intArray(0), new doubleArray(0)]
+for (var i in arrs) arrs[i].length

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/JDK-8157250.js.EXPECTED	Wed May 18 17:37:34 2016 +0200
@@ -0,0 +1,1 @@
+0