*** pgsql/src/backend/utils/adt/timestamp.c	2009/01/01 17:23:50	1.196
--- pgsql/src/backend/utils/adt/timestamp.c	2009/03/15 20:31:19	1.197
***************
*** 8,14 ****
   *
   *
   * IDENTIFICATION
!  *	  $PostgreSQL: pgsql/src/backend/utils/adt/timestamp.c,v 1.195 2008/11/11 02:42:32 tgl Exp $
   *
   *-------------------------------------------------------------------------
   */
--- 8,14 ----
   *
   *
   * IDENTIFICATION
!  *	  $PostgreSQL: pgsql/src/backend/utils/adt/timestamp.c,v 1.196 2009/01/01 17:23:50 momjian Exp $
   *
   *-------------------------------------------------------------------------
   */
*************** isoweek2j(int year, int week)
*** 3668,3678 ****
  	int			day0,
  				day4;
  
- 	if (!year)
- 		ereport(ERROR,
- 				(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
- 		   errmsg("cannot calculate week number without year information")));
- 
  	/* fourth day of current year */
  	day4 = date2j(year, 1, 4);
  
--- 3668,3673 ----