[HARMONY-498] GregorianCalendar clone problem

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Component/s: Classlib
• Assignee: Stepan Mishura
• Reporter: Mark Hindess
• Created: 23/May/06 20:09
• Updated: 26/May/06 18:37
• Resolved: 25/May/06 16:05

Description

The following test code breaks on Harmony. Setting milliseconds to zero alters the day of the month. Output on RI is:

today time = Tue May 23 14:06:51 BST 2006
yesterday time = Mon May 22 14:06:51 BST 2006
day of month before resetting milliseconds = 23
day of month after resetting milliseconds = 23
time before resetting seconds = Tue May 23 14:06:51 BST 2006
time after resetting seconds = Tue May 23 14:06:00 BST 2006

Output on Harmony is:

today time = Tue May 23 13:59:39 BST 2006
yesterday time = Mon May 22 13:59:39 BST 2006
day of month before resetting milliseconds = 23
day of month after resetting milliseconds = 22
time before resetting seconds = Tue May 23 13:59:39 BST 2006
time after resetting seconds = Mon May 22 13:59:00 BST 2006

I suspect it might have something to do with the cachedFields?

import java.util.TimeZone;
import java.util.Calendar;

public class Test2 {

public static void main(String[] args)

{ Calendar today = Calendar.getInstance(); System.err.println("today time = "+today.getTime()); Calendar yesterday = (Calendar)today.clone(); // copy not deep enough? yesterday.add(Calendar.DATE, -1); System.err.println("yesterday time = "+yesterday.getTime()); Calendar broken = (Calendar)today.clone(); System.err.println("day of month before resetting milliseconds = "+ broken.get(Calendar.DAY_OF_MONTH)); broken.set(Calendar.MILLISECOND, 0); System.err.println("day of month after resetting milliseconds = "+ broken.get(Calendar.DAY_OF_MONTH)); System.err.println("time before resetting seconds = "+broken.getTime()); broken.set(Calendar.SECOND, 0); System.err.println("time after resetting seconds = "+broken.getTime()); }

}