--- a/src/jdk.dynalink/share/classes/jdk/dynalink/beans/BeanLinker.java	Thu Jan 11 15:06:55 2018 -0800
+++ b/src/jdk.dynalink/share/classes/jdk/dynalink/beans/BeanLinker.java	Fri Jan 12 10:33:06 2018 +0100
@@ -116,7 +116,7 @@
         if(clazz.isArray()) {
             // Some languages won't have a notion of manipulating collections. Exposing "length" on arrays as an
             // explicit property is beneficial for them.
-            setPropertyGetter("length", MethodHandles.arrayLength(clazz), ValidationType.EXACT_CLASS);
+            setPropertyGetter("length", GET_ARRAY_LENGTH, ValidationType.IS_ARRAY);
         } else if(Collection.class.isAssignableFrom(clazz)) {
             setPropertyGetter("length", GET_COLLECTION_LENGTH, ValidationType.INSTANCE_OF);
         } else if(Map.class.isAssignableFrom(clazz)) {
@@ -546,6 +546,9 @@
     private static final MethodHandle GET_MAP_LENGTH = Lookup.PUBLIC.findVirtual(Map.class, "size",
             MethodType.methodType(int.class));
 
+    private static final MethodHandle GET_ARRAY_LENGTH = Lookup.PUBLIC.findStatic(Array.class, "getLength",
+            MethodType.methodType(int.class, Object.class));
+
     private static void assertParameterCount(final CallSiteDescriptor descriptor, final int paramCount) {
         if(descriptor.getMethodType().parameterCount() != paramCount) {
             throw new BootstrapMethodError(descriptor.getOperation() + " must have exactly " + paramCount + " parameters.");

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/nashorn/script/basic/JDK-8157251.js	Fri Jan 12 10:33:06 2018 +0100
@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2018, 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-8157251: BeanLinker relinks array length operations for array types
+ *
+ * @test
+ * @run
+ */
+
+var intArray = Java.type("int[]")
+var doubleArray = Java.type("double[]")
+var arrs = [new intArray(20), new doubleArray(0)]
+for (var i in arrs)
+   print(arrs[i].length)

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/nashorn/script/basic/JDK-8157251.js.EXPECTED	Fri Jan 12 10:33:06 2018 +0100
@@ -0,0 +1,2 @@
+20
+0
\ No newline at end of file