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Systemd/test/fuzz/fuzz-dns-packet
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Yu Watanabe ae45e1a383 resolve: slightly optimize dns_answer_add() 
Previously, dns_answer_add() was O(n^2).
With this change dns_packet_extract() becomes ~15 times faster for some
extremal case.

Before:
```
$ time ./fuzz-dns-packet ~/downloads/clusterfuzz-testcase-minimized-fuzz-dns-packet-5631106733047808
/home/watanabe/downloads/clusterfuzz-testcase-minimized-fuzz-dns-packet-5631106733047808... ok

real    0m15.453s
user    0m15.430s
sys     0m0.007s
```

After:
```
$ time ./fuzz-dns-packet ~/downloads/clusterfuzz-testcase-minimized-fuzz-dns-packet-5631106733047808
/home/watanabe/downloads/clusterfuzz-testcase-minimized-fuzz-dns-packet-5631106733047808... ok

real    0m0.831s
user    0m0.824s
sys     0m0.006s
```

Hopefully fixes oss-fuzz#19227.
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=19227
 		2020-12-30 04:14:22 +09:00
..
crash-497be373856c321a8a7b06589df9b2ff2e0d866a travis: turn on nonnull-attribute on Fuzzit 2019-06-15 23:12:24 +02:00
issue-7888 fuzz: unify the "fuzz-regressions" directory with the main corpus 2018-10-02 09:41:25 +02:00
oss-fuzz-5465 fuzz: unify the "fuzz-regressions" directory with the main corpus 2018-10-02 09:41:25 +02:00
oss-fuzz-13422 fuzz-dns-packet: add test case with lots of labels 2019-03-04 15:53:37 +01:00
oss-fuzz-19227 resolve: slightly optimize dns_answer_add() 2020-12-30 04:14:22 +09:00