Index: src/backend/nodes/copyfuncs.c
===================================================================
RCS file: /projects/cvsroot/pgsql/src/backend/nodes/copyfuncs.c,v
retrieving revision 1.166
diff -c -p -r1.166 copyfuncs.c
*** src/backend/nodes/copyfuncs.c	2002/03/06 20:34:47	1.166
--- src/backend/nodes/copyfuncs.c	2002/03/07 12:17:35
*************** _copyValue(Value *from)
*** 2571,2577 ****
  		case T_Float:
  		case T_String:
  		case T_BitString:
! 			newnode->val.str = pstrdup(from->val.str);
  			break;
  		default:
  			break;
--- 2571,2578 ----
  		case T_Float:
  		case T_String:
  		case T_BitString:
! 			if (from->val.str)
! 				newnode->val.str = pstrdup(from->val.str);
  			break;
  		default:
  			break;