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23 
24 /*
25  * @test ConfigFileParsing
26  * @bug 7158804
27  * @summary Improve config file parsing
28  * @library /testlibrary
29  */
30 
31 import java.io.PrintWriter;
32 import com.oracle.java.testlibrary.*;
33 
34 public class ConfigFileParsing {
main(String[] args)35   public static void main(String[] args) throws Exception {
36     String testFileName = ".hotspotrc";
37 
38     // Create really long invalid option
39     String reallyLongInvalidOption = "";
40     for (int i=0; i<5000; i++)
41       reallyLongInvalidOption+='a';
42 
43     // Populate the options file with really long string
44     PrintWriter pw = new PrintWriter(testFileName);
45     pw.println("-XX:+" + reallyLongInvalidOption);
46     pw.close();
47 
48     // start VM
49     ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
50         "-XX:+IgnoreUnrecognizedVMOptions", "-XX:Flags=.hotspotrc", "-version");
51 
52     OutputAnalyzer output = new OutputAnalyzer(pb.start());
53     output.shouldHaveExitValue(0);
54   }
55 }
56