1 /*
   2  * Copyright (c) 2013, 2016, 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.
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   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
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  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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  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
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  23 
  24 /*
  25  * @test ConfigFileParsing
  26  * @bug 7158804
  27  * @summary Improve config file parsing
  28  * @library /test/lib
  29  * @modules java.base/jdk.internal.misc
  30  *          java.management
  31  */
  32 
  33 import java.io.PrintWriter;
  34 import jdk.test.lib.process.ProcessTools;
  35 import jdk.test.lib.process.OutputAnalyzer;
  36 
  37 public class ConfigFileParsing {
  38   public static void main(String[] args) throws Exception {
  39     String testFileName = ".hotspotrc";
  40 
  41     // Create really long invalid option
  42     String reallyLongInvalidOption = "";
  43     for (int i=0; i<5000; i++)
  44       reallyLongInvalidOption+='a';
  45 
  46     // Populate the options file with really long string
  47     PrintWriter pw = new PrintWriter(testFileName);
  48     pw.println("-XX:+" + reallyLongInvalidOption);
  49     pw.close();
  50 
  51     // start VM
  52     ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
  53         "-XX:+IgnoreUnrecognizedVMOptions", "-XX:Flags=.hotspotrc", "-version");
  54 
  55     OutputAnalyzer output = new OutputAnalyzer(pb.start());
  56     output.shouldHaveExitValue(0);
  57   }
  58 }