1/* 2 * Copyright (c) 2010, 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24/* 25 * @test 26 * @bug 6942649 27 * @summary add hidden option to identify location and version of javac classes 28 * @modules jdk.compiler 29 */ 30 31import java.io.*; 32 33public class T6942649 { 34 public static void main(String... args) throws Exception { 35 new T6942649().run(); 36 } 37 38 void run() throws Exception { 39 test("-XDshowClass", "com.sun.tools.javac.Main", false); 40 test("-XDshowClass=com.sun.tools.javac.util.Log", "com.sun.tools.javac.util.Log", false); 41 } 42 43 void test(String opt, String clazz, boolean checkLocation) throws Exception { 44 System.err.println("test " + opt); 45 StringWriter sw = new StringWriter(); 46 PrintWriter pw = new PrintWriter(sw); 47 int rc = com.sun.tools.javac.Main.compile(new String[] { opt }, pw); 48 pw.close(); 49 String out = sw.toString(); 50 System.err.println("javac rc=" + rc + "\n" + out); 51 52 if (!out.contains(clazz)) 53 throw new Exception("class name not found in output"); 54 55 // (JDK 9) We can no longer guarantee to be able to show a URL for the 56 // location of the class, especially when the class is in the system image 57 if (checkLocation) { 58 int lastDot = clazz.lastIndexOf("."); 59 if (!out.contains(clazz.substring(lastDot + 1) + ".class")) 60 throw new Exception("location of class not found in output"); 61 } 62 63 if (!out.contains("MD5 checksum: ")) 64 throw new Exception("checksum not found in output"); 65 } 66} 67