1 /*
   2  * Copyright (c) 2008, 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 4459541
  27  * @summary "javap -l" shows line numbers as signed short; they should be unsigned.
  28  * @modules jdk.compiler
  29  */
  30 
  31 import java.io.*;
  32 
  33 public class T4459541 {
  34     public static void main(String[] args) throws Exception {
  35         new T4459541().run();
  36     }
  37 
  38     public void run() throws IOException {
  39         File javaFile = writeTestFile();
  40         File classFile = compileTestFile(javaFile);
  41         String output = javap(classFile);
  42         verify(output);
  43     }
  44 
  45     File writeTestFile() throws IOException {
  46         File f = new File("Test.java");
  47         out = new PrintWriter(new BufferedWriter(new FileWriter(f)));
  48         println("class Test {");
  49         println("void begin(int i) {");
  50         println("i++;");
  51         println("i++;");
  52         println("}");
  53         while (line < 32750)
  54             println("// " + line);
  55         println("void before_32767(int i) {");
  56         println("i++;");
  57         println("i++;");
  58         println("}");
  59         while (line < 32768-4)
  60             println("// " + line);
  61         println("void straddle_32768(int i) {");
  62         while (line < 32768+4)
  63             println("i++;");
  64         println("}");
  65         while (line < 65520)
  66             println("// " + line);
  67         println("void between_32768_and_65536(int i) {");
  68         println("i++;");
  69         println("i++;");
  70         println("}");
  71         while (line < 65536-4)
  72             println("// " + line);
  73         println("void straddle_65536(int i) {");
  74         while (line < 65536+4)
  75             println("i++;");
  76         println("}");
  77         println("}");
  78         out.close();
  79         return f;
  80     }
  81 
  82     File compileTestFile(File f) {
  83         int rc = com.sun.tools.javac.Main.compile(new String[] { f.getPath() });
  84         if (rc != 0)
  85             throw new Error("compilation failed. rc=" + rc);
  86         String path = f.getPath();
  87         return new File(path.substring(0, path.length() - 5) + ".class");
  88     }
  89 
  90     String javap(File f) {
  91         StringWriter sw = new StringWriter();
  92         PrintWriter out = new PrintWriter(sw);
  93         int rc = com.sun.tools.javap.Main.run(new String[] { "-l", f.getPath() }, out);
  94         if (rc != 0)
  95             throw new Error("javap failed. rc=" + rc);
  96         out.close();
  97         return sw.toString();
  98     }
  99 
 100     void verify(String output) {
 101         System.out.println(output);
 102         if (output.indexOf("-") >= 0)
 103             throw new Error("- found in output");
 104     }
 105 
 106     void println(String text) {
 107         out.println(text);
 108         line++;
 109     }
 110 
 111     PrintWriter out;
 112     int line = 1;
 113 }