8058927: ATG throws ClassNotFoundException

Summary: ClassLoader for array klass set to null and not the class loader of the component type.
Reviewed-by: dcubed, ctornqvi

src/share/vm/classfile/javaClasses.cpp

@@ -625,6 +625,7 @@ void java_lang_Class::create_mirror(KlassHandle k, Handle class_loader,
     }
 
     // set the classLoader field in the java_lang_Class instance
+    assert(class_loader() == k->class_loader(), "should be same");
     set_class_loader(mirror(), class_loader());
 
     // Setup indirection from klass->mirror last

src/share/vm/oops/arrayKlass.cpp

@@ -93,7 +93,7 @@ void ArrayKlass::complete_create_array_klass(ArrayKlass* k, KlassHandle super_kl
   ResourceMark rm(THREAD);
   k->initialize_supers(super_klass(), CHECK);
   k->vtable()->initialize_vtable(false, CHECK);
-  java_lang_Class::create_mirror(k, Handle(NULL), Handle(NULL), CHECK);
+  java_lang_Class::create_mirror(k, Handle(THREAD, k->class_loader()), Handle(NULL), CHECK);
 }
 
 GrowableArray<Klass*>* ArrayKlass::compute_secondary_supers(int num_extra_slots) {

test/runtime/LoadClass/ShowClassLoader.java

+/*
+ * Copyright (c) 2014, 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
+ * @key regression
+ * @bug 8058927
+ * @summary Make sure array class has the right class loader
+ * @run main ShowClassLoader
+ */
+
+public class ShowClassLoader {
+
+    public static void main(String[] args) {
+        Object[] oa = new Object[0];
+        ShowClassLoader[] sa = new ShowClassLoader[0];
+
+        System.out.println("Classloader for Object[] is " + oa.getClass().getClassLoader());
+        System.out.println("Classloader for SCL[] is " + sa.getClass().getClassLoader() );
+
+        if (sa.getClass().getClassLoader() == null) {
+            throw new RuntimeException("Wrong class loader");
+        }
+    }
+}