--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/langtools/tools/javap/T6863746.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 2009, 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.
+ */
+
+import java.io.*;
+
+/*
+ * @test
+ * @bug 6863746
+ * @summary javap should not scan ct.sym by default
+ * @modules jdk.jdeps/com.sun.tools.javap
+ */
+
+public class T6863746 {
+    public static void main(String... args) throws Exception{
+        new T6863746().run();
+    }
+
+    public void run() throws Exception {
+        String[] args = { "-c", "java.lang.Object" };
+        StringWriter sw = new StringWriter();
+        PrintWriter pw = new PrintWriter(sw);
+        int rc = com.sun.tools.javap.Main.run(args, pw);
+        pw.close();
+        String out = sw.toString();
+        System.out.println(out);
+        String[] lines = out.split("\n");
+        // If ct.sym is being read, the output does not include
+        // Code attributes, so check for Code attributes as a
+        // way of detecting that ct.sym is not being used.
+        if (lines.length < 50 || out.indexOf("Code:") == -1)
+            throw new Exception("unexpected output from javap");
+    }
+}