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// Copyright (c) 2020 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 <primitives/block.h>
#include <test/fuzz/FuzzedDataProvider.h>
#include <test/fuzz/fuzz.h>
#include <test/fuzz/util.h>
#include <uint256.h>
#include <cassert>
#include <cstdint>
#include <optional>
#include <string>
#include <vector>
FUZZ_TARGET(block_header)
{
FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
const std::optional<CBlockHeader> block_header = ConsumeDeserializable<CBlockHeader>(fuzzed_data_provider);
if (!block_header) {
return;
}
{
const uint256 hash = block_header->GetHash();
constexpr uint256 u256_max{"ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"};
assert(hash != u256_max);
assert(block_header->GetBlockTime() == block_header->nTime);
assert(block_header->IsNull() == (block_header->nBits == 0));
}
{
CBlockHeader mut_block_header = *block_header;
mut_block_header.SetNull();
assert(mut_block_header.IsNull());
CBlock block{*block_header};
assert(block.GetBlockHeader().GetHash() == block_header->GetHash());
(void)block.ToString();
block.SetNull();
assert(block.GetBlockHeader().GetHash() == mut_block_header.GetHash());
}
{
std::optional<CBlockLocator> block_locator = ConsumeDeserializable<CBlockLocator>(fuzzed_data_provider);
if (block_locator) {
(void)block_locator->IsNull();
block_locator->SetNull();
assert(block_locator->IsNull());
}
}
}
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