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Merge bitcoin/bitcoin#22755: fuzz: Avoid timeout in blockfilter fuzz target

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fa2547fc52b90b4bbde250803df24d7f665383a7 fuzz: Avoid timeout in blockfilter fuzz target (MarcoFalke)

Pull request description:

  Previously it would take 10 seconds to run this input, now it takes 10ms: [clusterfuzz-testcase-blockfilter-5022838196142080.log](https://github.com/bitcoin/bitcoin/files/7021883/clusterfuzz-testcase-blockfilter-5022838196142080.log)

  The fix is moving the `MatchAny` out of the hot loop.

  Also, to avoid unlimited runtime, cap the hot loop at 30k iterations.

ACKs for top commit:
  GeneFerneau:
    Approach ACK [fa2547f](fa2547fc52)

Tree-SHA512: a04e7388856930ec81222da8f05b665a923fe9482aeb4c55c9be4561aa7320a0703dbbf8d438ae92854e877a8e3b46777a29c0b652b8f34c29c2142cc5d63ccb
This commit is contained in:
MarcoFalke 2021-08-26 08:10:10 +02:00 committed by pasta
parent dd26a7a806
commit f263bea244
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GPG Key ID: 52527BEDABE87984
1 changed files with 3 additions and 2 deletions
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5
src/test/fuzz/blockfilter.cpp
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@ -36,9 +36,10 @@ FUZZ_TARGET(blockfilter)
(void)gcs_filter.GetEncoded();
(void)gcs_filter.Match(ConsumeRandomLengthByteVector(fuzzed_data_provider));
GCSFilter::ElementSet element_set;
while (fuzzed_data_provider.ConsumeBool()) {
LIMITED_WHILE(fuzzed_data_provider.ConsumeBool(), 30000)
{
element_set.insert(ConsumeRandomLengthByteVector(fuzzed_data_provider));
}
gcs_filter.MatchAny(element_set);
}
}
}