Name: diC59631 Date: 01/11/99


/*

Compile this source code and run it as follows:

15:16 E:\projects\java\com\sixlegs\text>javac Hello.java

15:16 E:\projects\java\com\sixlegs\text>java Hello
A nonfatal internal JIT (3.00.078(x)) error 'GetRegisterA' has occurred in :
  'Hello.chooseRunSize ()V': Interpreting method.
  Please report this error in detail to http://java.sun.com/cgi-bin/bugreport.cgi

 */

class Hello {
  private int runSize;
  private int packSize = 8;
  private int[][] array = {{1}};
  
  public static void main (String[] args) {
    new Hello().chooseRunSize();
  }

  private int bitsNeeded (int num_vals) {
    return (int)Math.ceil(Math.log(num_vals) / Math.log(2));
  }

  private void chooseRunSize () {
    int w = array.length;
    int h = array[0].length;
    int max_run = bitsNeeded(w * h);
    int[] buckets = new int[max_run + 1];
    int run_len = 0;
    int old_v = array[0][0];
    for (int i = 0; i < w; i++) {
      for (int j = 0; j < h; j++) {
int v = array[i][j];
if (v != old_v) {
buckets[bitsNeeded(run_len)]++;
run_len = 0;
}
run_len++;
old_v = v;
      }
    }
    buckets[bitsNeeded(run_len)]++;
    int last_estimate = Integer.MAX_VALUE;
    for (runSize = 1; runSize <= max_run; runSize++) {
      int accum = 0;
      for (int i = 1; i <= max_run; i++)
   accum += buckets[i] * (1 << Math.max(i - runSize, 0));
      int bit_estimate = accum * (runSize + packSize);
      if (bit_estimate > last_estimate) break;
      last_estimate = bit_estimate;
    }
  }
}
(Review ID: 48960)
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Name: skT88420 Date: 07/19/99


The problem happened just one time.


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Name: skT88420 Date: 09/15/99


I have received this request from java VM to report a bug:

J:\borsotti\lbj>java -cp .. lbj.CliTest
A nonfatal internal JIT (3.00.078(x)) error 'GetRegisterA' has occurred in :
  'lbj/Cli.start (Llbj/Cli$Command;)V': Interpreting method.
  Please report this error in detail to http://java.sun.com/cgi-bin/bugreport.cgi
(Review ID: 95273)
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