diff -r f9ac726ab347 -r 67a3f50b14ae test/jdk/java/lang/invoke/lookup/LookupClassTest.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/java/lang/invoke/lookup/LookupClassTest.java	Tue Oct 29 12:52:03 2019 -0700
@@ -0,0 +1,68 @@
+/*
+ * Copyright (c) 2019, 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.
+ */
+
+/*
+ * @test
+ * @bug 8173975
+ * @summary Lookup::in throws IAE if the target class is a primitive class or array class
+ * @run testng/othervm LookupClassTest
+ */
+
+import java.lang.invoke.MethodHandles;
+import java.lang.invoke.MethodHandles.Lookup;
+
+import org.testng.annotations.BeforeTest;
+import org.testng.annotations.Test;
+import static org.testng.Assert.*;
+
+public class LookupClassTest {
+    private static final LookupClassTest[] ARRAY = new LookupClassTest[0];
+    @BeforeTest
+    public void test() {
+        assertTrue(ARRAY.getClass().isArray());
+        assertSamePackage(MethodHandles.lookup(), ARRAY.getClass());
+        assertSamePackage(MethodHandles.publicLookup(), int.class);
+    }
+
+    private void assertSamePackage(Lookup lookup, Class<?> targetClass) {
+        assertEquals(lookup.lookupClass().getPackageName(), targetClass.getPackageName());
+    }
+
+    @Test(expectedExceptions = IllegalArgumentException.class)
+    public void arrayLookupClass() {
+        Lookup lookup = MethodHandles.lookup();
+        lookup.in(ARRAY.getClass());
+    }
+
+    @Test(expectedExceptions = IllegalArgumentException.class)
+    public void primitiveLookupClass() {
+        Lookup lookup = MethodHandles.publicLookup();
+        lookup.in(int.class);
+    }
+
+    @Test(expectedExceptions = IllegalArgumentException.class)
+    public void voidLookupClass() {
+        Lookup lookup = MethodHandles.publicLookup();
+        lookup.in(void.class);
+    }
+}