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// Copyright (c) 2020-2022 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <chain.h>
#include <test/fuzz/FuzzedDataProvider.h>
#include <test/fuzz/fuzz.h>
#include <test/fuzz/util.h>
#include <cstdint>
#include <optional>
#include <vector>
FUZZ_TARGET(chain)
{
FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
std::optional<CDiskBlockIndex> disk_block_index = ConsumeDeserializable<CDiskBlockIndex>(fuzzed_data_provider);
if (!disk_block_index) {
return;
}
const uint256 zero{};
disk_block_index->phashBlock = &zero;
{
LOCK(::cs_main);
(void)disk_block_index->ConstructBlockHash();
(void)disk_block_index->GetBlockPos();
(void)disk_block_index->GetBlockTime();
(void)disk_block_index->GetBlockTimeMax();
(void)disk_block_index->GetMedianTimePast();
(void)disk_block_index->GetUndoPos();
(void)disk_block_index->HaveNumChainTxs();
(void)disk_block_index->IsValid();
}
const CBlockHeader block_header = disk_block_index->GetBlockHeader();
(void)CDiskBlockIndex{*disk_block_index};
(void)disk_block_index->BuildSkip();
LIMITED_WHILE(fuzzed_data_provider.ConsumeBool(), 10000) {
const BlockStatus block_status = fuzzed_data_provider.PickValueInArray({
BlockStatus::BLOCK_VALID_UNKNOWN,
BlockStatus::BLOCK_VALID_RESERVED,
BlockStatus::BLOCK_VALID_TREE,
BlockStatus::BLOCK_VALID_TRANSACTIONS,
BlockStatus::BLOCK_VALID_CHAIN,
BlockStatus::BLOCK_VALID_SCRIPTS,
BlockStatus::BLOCK_VALID_MASK,
BlockStatus::BLOCK_HAVE_DATA,
BlockStatus::BLOCK_HAVE_UNDO,
BlockStatus::BLOCK_HAVE_MASK,
BlockStatus::BLOCK_FAILED_VALID,
BlockStatus::BLOCK_FAILED_CHILD,
BlockStatus::BLOCK_FAILED_MASK,
BlockStatus::BLOCK_OPT_WITNESS,
});
if (block_status & ~BLOCK_VALID_MASK) {
continue;
}
WITH_LOCK(::cs_main, (void)disk_block_index->RaiseValidity(block_status));
}
CBlockIndex block_index{block_header};
block_index.phashBlock = &zero;
(void)block_index.GetBlockHash();
(void)block_index.ToString();
}
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