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-rw-r--r--filter/filter.c12
1 files changed, 7 insertions, 5 deletions
diff --git a/filter/filter.c b/filter/filter.c
index ae3b03a..3230610 100644
--- a/filter/filter.c
+++ b/filter/filter.c
@@ -621,6 +621,12 @@ interpret(struct f_inst *what)
e = ea_find( (*f_rte)->attrs->eattrs, what->a2.i );
if (!e) {
+ /* A special case: undefined int_set looks like empty int_set */
+ if ((what->aux & EAF_TYPE_MASK) == EAF_TYPE_INT_SET) {
+ res.type = T_CLIST;
+ res.val.ad = adata_empty(f_pool);
+ break;
+ }
/* Undefined value */
res.type = T_VOID;
break;
@@ -836,11 +842,7 @@ interpret(struct f_inst *what)
case P('C','a'): /* Community list add or delete */
TWOARGS;
-
- /* Replace undefined value with empty community list */
- if (v1.type == T_VOID)
- v1.val.ad = adata_empty(f_pool);
- else if (v1.type != T_CLIST)
+ if (v1.type != T_CLIST)
runtime("Can't add/delete to non-clist");
if ((v2.type == T_PAIR) || (v2.type == T_QUAD))