1 /*
   2  * Copyright (c) 2009, 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 import java.io.*;
  25 import java.util.*;
  26 
  27 /*
  28  * @test
  29  * @bug 6824493
  30  * @summary experimental support for additional info for instructions
  31  * @modules jdk.compiler
  32  * @compile -g T6824493.java
  33  * @run main T6824493
  34  */
  35 public class T6824493 {
  36     public static void main(String... args) {
  37         new T6824493().run();
  38     }
  39 
  40     void run() {
  41         // for each of the options, we run javap and check for some
  42         // marker strings in the output that generally indicate the
  43         // presence of the expected output, without being as specific
  44         // as a full golden file test.
  45         test("-XDdetails:source",
  46             "for (int i = 0; i < 10; i++) {",
  47             "System.out.println(s + i);");
  48 
  49         test("-XDdetails:tryBlocks",
  50                 "try[0]",
  51                 "end try[0]",
  52                 "catch[0]");
  53 
  54         test("-XDdetails:stackMaps",
  55                 "StackMap locals:  this java/lang/String int",
  56                 "StackMap stack:  java/lang/Throwable");
  57 
  58         test("-XDdetails:localVariables",
  59                 "start local 3 // java.util.List list",
  60                 "end local 3 // java.util.List list");
  61 
  62         test("-XDdetails:localVariableTypes",
  63                 "start generic local 3 // java.util.List<java.lang.String> list",
  64                 "end generic local 3 // java.util.List<java.lang.String> list");
  65 
  66         if (errors > 0)
  67             throw new Error(errors + " errors found");
  68     }
  69 
  70     void test(String option, String... expect) {
  71         String[] args = {
  72             "-c",
  73             "-classpath",
  74             testSrc + File.pathSeparator + testClasses,
  75             option,
  76             "Test"
  77         };
  78         StringWriter sw = new StringWriter();
  79         PrintWriter pw = new PrintWriter(sw);
  80         int rc = com.sun.tools.javap.Main.run(args, pw);
  81         if (rc != 0) {
  82             error("unexpected return code from javap: " + rc);
  83             return;
  84         }
  85 
  86         String out = sw.toString();
  87         System.out.println(out);
  88         for (String e: expect) {
  89             if (!out.contains(e))
  90                 error("Not found: " + e);
  91         }
  92     }
  93 
  94     void error(String msg) {
  95         System.err.println("Error: " + msg);
  96         errors++;
  97     }
  98 
  99     private int errors;
 100     private String testSrc = System.getProperty("test.src", ".");
 101     private String testClasses = System.getProperty("test.classes", ".");
 102 }
 103 
 104 class Test {
 105     void m(String s) {
 106         for (int i = 0; i < 10; i++) {
 107             try {
 108                 List<String> list = null;
 109                 System.out.println(s + i);
 110             } catch (NullPointerException e) {
 111                 System.out.println("catch NPE");
 112             } finally {
 113                 System.out.println("finally");
 114             }
 115         }
 116     }
 117 }