Name: paC48320 Date: 04/03/98


System.gc() with JIT invocation causes java.lnag.NullPointerException.
This doesn't occur when java runs with the -nojit option or commenting
out System.gc() line without the -nojit option. The exception
message is as follows:
java.lang.NullPointerException
        at sun.io.ByteToCharSJIS.<init>(Compiled Code)
        at sun.io.ByteToCharConverter.getConverter(Compiled Code)
        at test.convert(Compiled Code)
        at test.<init>(test.java:11)
        at test.main(test.java:3)
 
Following program demonstrates the problem.
 
public class test {
  public static void main(String argv[]) {
    test t = new test();
  }
 
  test() {
    String sjis = "SJIS code";
    System.gc(); // Removing this line works.
    String aa = convert(sjis);
    System.out.println("aa="+aa);
    String bb = convert(sjis);
    System.out.println("bb="+bb);
  }
 
  String convert(String sjis) {
    try {
      return new String(sjis.getBytes("8859_1"),
                        System.getProperty("file.encoding"));
    } catch(Exception e) {
      e.printStackTrace();
    }
    return null;
  }
}
(Review ID: 27738)
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