Index: src/pl/plpgsql/src/pl_comp.c
===================================================================
RCS file: /opt/src/cvs/pgsql-server/src/pl/plpgsql/src/pl_comp.c,v
retrieving revision 1.59
diff -c -r1.59 pl_comp.c
*** src/pl/plpgsql/src/pl_comp.c	1 Jul 2003 21:47:09 -0000	1.59
--- src/pl/plpgsql/src/pl_comp.c	3 Jul 2003 17:59:48 -0000
***************
*** 354,359 ****
--- 354,395 ----
  				function->fn_rettyplen = typeStruct->typlen;
  				function->fn_rettypelem = typeStruct->typelem;
  				perm_fmgr_info(typeStruct->typinput, &(function->fn_retinput));
+ 
+ 				/*
+ 				 * install $0 reference, but only for polymorphic
+ 				 * return types
+ 				 */
+ 				if (procStruct->prorettype == ANYARRAYOID ||
+ 					procStruct->prorettype == ANYELEMENTOID)
+ 				{
+ 					char		buf[32];
+ 
+ 					/* name for variable */
+ 					snprintf(buf, sizeof(buf), "$%d", 0);
+ 
+ 					/*
+ 					 * Normal return values get a var node
+ 					 */
+ 					var = malloc(sizeof(PLpgSQL_var));
+ 					memset(var, 0, sizeof(PLpgSQL_var));
+ 
+ 					var->dtype = PLPGSQL_DTYPE_VAR;
+ 					var->refname = strdup(buf);
+ 					var->lineno = 0;
+ 					var->datatype = build_datatype(typeTup, -1);
+ 					var->isconst = false;
+ 					var->notnull = false;
+ 					var->default_val = NULL;
+ 
+ 					/* preset to NULL */
+ 					var->value = 0;
+ 					var->isnull = true;
+ 					var->freeval = false;
+ 
+ 					plpgsql_adddatum((PLpgSQL_datum *) var);
+ 					plpgsql_ns_additem(PLPGSQL_NSTYPE_VAR, var->varno,
+ 									   var->refname);
+ 				}
  			}
  			ReleaseSysCache(typeTup);