Treat a zero-D array as empty in int_enum(), per Andrew@supernews.

diff --git a/contrib/intagg/int_aggregate.c b/contrib/intagg/int_aggregate.c
index 2928550..df2bd1e 100644 (file)
--- a/contrib/intagg/int_aggregate.c
+++ b/contrib/intagg/int_aggregate.c
@@ -243,7 +243,8 @@ int_enum(PG_FUNCTION_ARGS)
                        pc->flags = 0;
                }
                /* Now that we have a detoasted array, verify dimensions */
-               if (pc->p->a.ndim != 1)
+               /* We'll treat a zero-D array as empty, below */
+               if (pc->p->a.ndim > 1)
                        elog(ERROR, "int_enum only accepts 1-D arrays");
                pc->num = 0;
                fcinfo->context = (Node *) pc;
@@ -252,7 +253,7 @@ int_enum(PG_FUNCTION_ARGS)
        else    /* use an existing one */
                pc = (CTX *) fcinfo->context;
        /* Are we done yet? */
-       if (pc->num >= pc->p->items)
+       if (pc->p->a.ndim < 1 || pc->num >= pc->p->items)
        {
                /* We are done */
                if (pc->flags & TOASTED)