diff -r 000000000000 -r 959103a6100f test/tools/javap/T6866657.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/tools/javap/T6866657.java	Wed Apr 27 01:34:52 2016 +0800
@@ -0,0 +1,82 @@
+/*
+ * Copyright (c) 2009, 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 6866657
+ * @summary add byteLength() method to primary classfile types
+ */
+
+import java.io.*;
+import java.util.*;
+import javax.tools.*;
+import com.sun.tools.javap.*;
+
+public class T6866657
+{
+    public static void main(String... args) {
+        new T6866657().run();
+    }
+
+    void run() {
+        verify("java.lang.Object");
+        verify("java.lang.String");
+        verify("java.util.List");
+        verify("java.util.ArrayList");
+        if (errors > 0)
+            throw new Error(errors + " found.");
+    }
+
+    void verify(String className) {
+        try {
+            PrintWriter log = new PrintWriter(System.out);
+            JavaFileManager fileManager = JavapFileManager.create(null, log);
+            JavaFileObject fo = fileManager.getJavaFileForInput(StandardLocation.PLATFORM_CLASS_PATH, className, JavaFileObject.Kind.CLASS);
+            if (fo == null) {
+                error("Can't find " + className);
+            } else {
+                JavapTask t = new JavapTask(log, fileManager, null);
+                t.handleOptions(new String[] { "-sysinfo", className });
+                JavapTask.ClassFileInfo cfInfo = t.read(fo);
+                expectEqual(cfInfo.cf.byteLength(), cfInfo.size);
+            }
+        } catch (Exception e) {
+            e.printStackTrace();
+            error("Exception: " + e);
+        }
+    }
+
+    void expectEqual(int found, int expected) {
+        if (found != expected)
+            error("bad value found: " + found + " expected: " + expected);
+    }
+
+    void error(String msg) {
+        System.err.println(msg);
+        errors++;
+    }
+
+    int errors;
+}
+