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Merge bitcoin/bitcoin#24179: fuzz: Speed up script fuzz target

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fa6842978d fuzz: Speed up script fuzz target (MarcoFalke)

Pull request description:

  Currently the script fuzz target takes the longest time (5000 seconds, aka 80 minutes, see https://cirrus-ci.com/task/5651378755338240?logs=ci#L4501).

  Fix this by making it twice as fast.

  Instead of running all possible combinations for all fuzz inputs, consume a bool and decide at runtime which path to take.

  I moved the new calls to the end to not invalidate existing fuzz inputs.

ACKs for top commit:
  prusnak:
    ACK fa6842978d

Tree-SHA512: 5e408255f96f9e92e472f4e8a8a0f8d8814bad444ac0ff7d5db5ed84a59a861135ffe5e04d81f479b0695cb17e4d7af005734959dd4aa9328bdc5acc98f36665
This commit is contained in:
MarcoFalke 2022-01-31 08:58:21 +01:00
commit 9237bdaac1
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GPG key ID: CE2B75697E69A548
1 changed files with 8 additions and 11 deletions
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19
src/test/fuzz/script.cpp
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@ -102,17 +102,6 @@ FUZZ_TARGET_INIT(script, initialize_script)
(void)script.IsPushOnly(); (void)script.IsPushOnly();
(void)script.GetSigOpCount(/* fAccurate= */ false); (void)script.GetSigOpCount(/* fAccurate= */ false);
(void)FormatScript(script);
(void)ScriptToAsmStr(script, false);
(void)ScriptToAsmStr(script, true);
UniValue o1(UniValue::VOBJ);
ScriptPubKeyToUniv(script, o1, true);
UniValue o2(UniValue::VOBJ);
ScriptPubKeyToUniv(script, o2, false);
UniValue o3(UniValue::VOBJ);
ScriptToUniv(script, o3);
{ {
const std::vector<uint8_t> bytes = ConsumeRandomLengthByteVector(fuzzed_data_provider); const std::vector<uint8_t> bytes = ConsumeRandomLengthByteVector(fuzzed_data_provider);
CompressedScript compressed_script; CompressedScript compressed_script;
@ -178,4 +167,12 @@ FUZZ_TARGET_INIT(script, initialize_script)
Assert(dest == GetScriptForDestination(tx_destination_2)); Assert(dest == GetScriptForDestination(tx_destination_2));
} }
} }
(void)FormatScript(script);
(void)ScriptToAsmStr(script, /*fAttemptSighashDecode=*/fuzzed_data_provider.ConsumeBool());
UniValue o1(UniValue::VOBJ);
ScriptPubKeyToUniv(script, o1, /*include_hex=*/fuzzed_data_provider.ConsumeBool());
UniValue o3(UniValue::VOBJ);
ScriptToUniv(script, o3);
} }