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CPP: Fix performance issue with AV Rule 79.ql.#580

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jbj merged 1 commit into
github:rc/1.19from
geoffw0:av-79-perf
Nov 30, 2018
Merged

CPP: Fix performance issue with AV Rule 79.ql.#580
jbj merged 1 commit into
github:rc/1.19from
geoffw0:av-79-perf

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@geoffw0

@geoffw0 geoffw0 commented Nov 29, 2018

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Fix performance issue with AV Rule 79.ql on Wireshark. Three expressions of the form a.getEnclosingElement() = b.getEnclosingElement() were causing the problem.

The query now completes on my laptop in 123s on this snapshot, 204s on Firefox, with no exceptionally slow predicates. I also verified that results are the same on some smaller snapshots (where I could get the original version to finish).

@jbj

@geoffw0 geoffw0 added the C++ label Nov 29, 2018
@geoffw0 geoffw0 requested a review from a team as a code owner November 29, 2018 15:57
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