The passed iterator can be NULL as in
gdbus/client.c::properties_changed():
...
proxy->prop_func(..., ..., iter=NULL, ...)
+--src/advertising.c::properties_changed(..., ..., iter, ...);
+--parse_secondary(iter, ...);
...
---
src/advertising.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/src/advertising.c b/src/advertising.c
index 42ac627604fe..6d8d06edd34f 100644
--- a/src/advertising.c
+++ b/src/advertising.c
@@ -1047,6 +1047,12 @@ static bool parse_secondary(DBusMessageIter *iter,
const char *str;
struct adv_secondary *sec;
+ if (!iter) {
+ /* Reset secondary channels */
+ client->flags &= ~MGMT_ADV_FLAG_SEC_MASK;
+ return true;
+ }
+
if (dbus_message_iter_get_arg_type(iter) != DBUS_TYPE_STRING)
return false;
--
2.35.3