Bug in SimpleDateFormat, with a patch

[H. Väisänen]

The following program outputs

1-01-01

when compiled with gcj version 3.3 like this

> gcj --main=Foobar Foobar.java -o foobar

> gcj --version
gcj (GCC) 3.3
Copyright (C) 2003 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

I think gcj output is incorrect since it does not have leading zeros.

The output should be

0001-01-01

************************************** The Program

import java.util.GregorianCalendar;

public class Foobar {
  public static void main (String[] args)
  {
    java.text.DateFormat f = new java.text.SimpleDateFormat ("yyyy-MM-dd");
    GregorianCalendar g = new GregorianCalendar (1, 0, 1, 12, 0, 0);
    System.out.println (f.format(g.getTime()));
  }
}

*************************************


The error is in java.text.SimpleDateFormat

Here is the patch

> diff -3cp SimpleDateFormat.java.old SimpleDateFormat.java
*** SimpleDateFormat.java.old	2003-07-23 17:34:39.000000000 +0300
--- SimpleDateFormat.java	2003-07-24 06:58:28.000000000 +0300
*************** public class SimpleDateFormat extends Da
*** 416,427 ****
  	  buffer.append(formatData.eras[calendar.get(Calendar.ERA)]);
  	  break;
  	case YEAR_FIELD:
! 	  temp = String.valueOf(calendar.get(Calendar.YEAR));
! 	  if (p.size < 4)
! 	    buffer.append(temp.substring(temp.length()-2));
! 	  else
! 	    buffer.append(temp);
! 	  break;
  	case MONTH_FIELD:
  	  if (p.size < 3)
  	    withLeadingZeros(calendar.get(Calendar.MONTH)+1,p.size,buffer);
--- 416,429 ----
  	  buffer.append(formatData.eras[calendar.get(Calendar.ERA)]);
  	  break;
  	case YEAR_FIELD:
!           if (p.size < 3)
!             {
!               temp = String.valueOf(calendar.get(Calendar.YEAR));
!               buffer.append(temp.substring(temp.length()-2));
!             }
!           else
!             withLeadingZeros(calendar.get(Calendar.YEAR),p.size,buffer);
!           break;
  	case MONTH_FIELD:
  	  if (p.size < 3)
  	    withLeadingZeros(calendar.get(Calendar.MONTH)+1,p.size,buffer);