Index: src/backend/nodes/equalfuncs.c
===================================================================
RCS file: /projects/cvsroot/pgsql/src/backend/nodes/equalfuncs.c,v
retrieving revision 1.114
diff -c -p -r1.114 equalfuncs.c
*** src/backend/nodes/equalfuncs.c	2002/03/06 20:34:48	1.114
--- src/backend/nodes/equalfuncs.c	2002/03/07 12:39:13
*************** _equalValue(Value *a, Value *b)
*** 1771,1777 ****
  		case T_Float:
  		case T_String:
  		case T_BitString:
! 			return strcmp(a->val.str, b->val.str) == 0;
  		default:
  			break;
  	}
--- 1771,1780 ----
  		case T_Float:
  		case T_String:
  		case T_BitString:
! 			if ((a->val.str != NULL) && (b->val.str != NULL))
! 				return strcmp(a->val.str, b->val.str) == 0;
! 			else
! 				return a->val.ival == b->val.ival;  /* true if both are NULL */
  		default:
  			break;
  	}