lib-index: Fix implicit integer truncation found by ubsan

diff --git a/src/lib-index/mail-index-transaction-view.c b/src/lib-index/mail-index-transaction-view.c
index dc320c304b14bdb2070e1c24495eea45703e574b..240c7fedaee722a4b79ea7c218d1afc1c7c5f91e 100644 (file)
--- a/src/lib-index/mail-index-transaction-view.c
+++ b/src/lib-index/mail-index-transaction-view.c
@@ -121,7 +121,7 @@ tview_apply_flag_updates(struct mail_index_view_transaction *tview,
 
        trec = PTR_OFFSET(tview->recs, (seq-1) * tview->record_size);
        memcpy(trec, rec, map->hdr.record_size);
-       trec->flags |= updates[idx].add_flags;
+       trec->flags |= updates[idx].add_flags & 0xff;
        trec->flags &= ENUM_NEGATE(updates[idx].remove_flags);
        return trec;
 }