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fuzz: Rework ConsumeScript

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This should make it easier for the fuzz engine to explore multisig code
paths. See discussion in https://github.com/bitcoin/bitcoin/issues/23105

The downside is that all fuzz inputs that use ConsumeScript are now
invalidated and need to be re-generated.

Another downside may be that most multisig scripts from ConsumeScript are
using likely not fully valid pubkeys.
This commit is contained in:
MarcoFalke
2021-09-27 12:39:17 +02:00
parent 077e98c6c2
commit fa4baf0756
4 changed files with 61 additions and 10 deletions
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4
src/test/fuzz/script.cpp
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@@ -41,9 +41,7 @@ void initialize_script()
FUZZ_TARGET_INIT(script, initialize_script)
{
FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
const std::optional<CScript> script_opt = ConsumeDeserializable<CScript>(fuzzed_data_provider);
if (!script_opt) return;
const CScript script{*script_opt};
const CScript script{ConsumeScript(fuzzed_data_provider)};
CompressedScript compressed;
if (CompressScript(script, compressed)) {