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validation: Pass in coins tip to CheckInputsFromMempoolAndCache

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This commit is contained in:
Carl Dong 2020-09-16 16:42:01 -04:00
parent 73a6d2b7be
commit 252b489c9f
1 changed files with 4 additions and 3 deletions
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7
src/validation.cpp
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@ -415,7 +415,7 @@ static void UpdateMempoolForReorg(CTxMemPool& mempool, DisconnectedBlockTransact
* */
static bool CheckInputsFromMempoolAndCache(const CTransaction& tx, TxValidationState& state,
const CCoinsViewCache& view, const CTxMemPool& pool,
unsigned int flags, PrecomputedTransactionData& txdata)
unsigned int flags, PrecomputedTransactionData& txdata, CCoinsViewCache& coins_tip)
EXCLUSIVE_LOCKS_REQUIRED(cs_main, pool.cs)
{
AssertLockHeld(cs_main);
@ -440,7 +440,8 @@ static bool CheckInputsFromMempoolAndCache(const CTransaction& tx, TxValidationS
assert(txFrom->vout.size() > txin.prevout.n);
assert(txFrom->vout[txin.prevout.n] == coin.out);
} else {
const Coin& coinFromUTXOSet = ::ChainstateActive().CoinsTip().AccessCoin(txin.prevout);
assert(std::addressof(::ChainstateActive().CoinsTip()) == std::addressof(coins_tip));
const Coin& coinFromUTXOSet = coins_tip.AccessCoin(txin.prevout);
assert(!coinFromUTXOSet.IsSpent());
assert(coinFromUTXOSet.out == coin.out);
}
@ -970,7 +971,7 @@ bool MemPoolAccept::ConsensusScriptChecks(const ATMPArgs& args, Workspace& ws, P
// invalid blocks (using TestBlockValidity), however allowing such
// transactions into the mempool can be exploited as a DoS attack.
unsigned int currentBlockScriptVerifyFlags = GetBlockScriptFlags(::ChainActive().Tip(), chainparams.GetConsensus());
if (!CheckInputsFromMempoolAndCache(tx, state, m_view, m_pool, currentBlockScriptVerifyFlags, txdata)) {
if (!CheckInputsFromMempoolAndCache(tx, state, m_view, m_pool, currentBlockScriptVerifyFlags, txdata, ::ChainstateActive().CoinsTip())) {
return error("%s: BUG! PLEASE REPORT THIS! CheckInputScripts failed against latest-block but not STANDARD flags %s, %s",
__func__, hash.ToString(), state.ToString());
}