diff options
| -rw-r--r-- | src/resolve/resolved-dns-packet.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/src/resolve/resolved-dns-packet.c b/src/resolve/resolved-dns-packet.c index 8fc3094b67..c34ecc44f8 100644 --- a/src/resolve/resolved-dns-packet.c +++ b/src/resolve/resolved-dns-packet.c @@ -659,15 +659,16 @@ static int dns_packet_append_types(DnsPacket *p, Bitmap *types, size_t *start) { } window = n >> 8; - entry = n & 255; bitmaps[entry / 8] |= 1 << (7 - (entry % 8)); } - r = dns_packet_append_type_window(p, window, entry / 8 + 1, bitmaps, NULL); - if (r < 0) - goto fail; + if (bitmaps[entry / 8] != 0) { + r = dns_packet_append_type_window(p, window, entry / 8 + 1, bitmaps, NULL); + if (r < 0) + goto fail; + } if (start) *start = saved_size; |