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Avoid using sizes on non-fixed-width types to derive protocol constants.

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Thanks to awemany for pointing this out.
This commit is contained in:
Gregory Maxwell 2017-07-17 17:00:00 +00:00
parent 0b019357ff
commit 095b917464
2 changed files with 5 additions and 4 deletions
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7
src/validation.cpp
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@ -20,6 +20,7 @@
#include "init.h"
#include "policy/fees.h"
#include "policy/policy.h"
#include "policy/rbf.h"
#include "pow.h"
#include "primitives/block.h"
#include "primitives/transaction.h"
@ -488,9 +489,9 @@ static bool AcceptToMemoryPoolWorker(const CChainParams& chainparams, CTxMemPool
if (!setConflicts.count(ptxConflicting->GetHash()))
{
// Allow opt-out of transaction replacement by setting
// nSequence >= maxint-1 on all inputs.
// nSequence > MAX_BIP125_RBF_SEQUENCE (SEQUENCE_FINAL-2) on all inputs.
//
// maxint-1 is picked to still allow use of nLockTime by
// SEQUENCE_FINAL-1 is picked to still allow use of nLockTime by
// non-replaceable transactions. All inputs rather than just one
// is for the sake of multi-party protocols, where we don't
// want a single party to be able to disable replacement.
@ -504,7 +505,7 @@ static bool AcceptToMemoryPoolWorker(const CChainParams& chainparams, CTxMemPool
{
for (const CTxIn &_txin : ptxConflicting->vin)
{
if (_txin.nSequence < std::numeric_limits<unsigned int>::max()-1)
if (_txin.nSequence <= MAX_BIP125_RBF_SEQUENCE)
{
fReplacementOptOut = false;
break;

2
src/wallet/wallet.cpp
View file

@ -2723,7 +2723,7 @@ bool CWallet::CreateTransaction(const std::vector<CRecipient>& vecSend, CWalletT
// to avoid conflicting with other possible uses of nSequence,
// and in the spirit of "smallest possible change from prior
// behavior."
const uint32_t nSequence = coin_control.signalRbf ? MAX_BIP125_RBF_SEQUENCE : (std::numeric_limits<unsigned int>::max() - 1);
const uint32_t nSequence = coin_control.signalRbf ? MAX_BIP125_RBF_SEQUENCE : (CTxIn::SEQUENCE_FINAL - 1);
for (const auto& coin : setCoins)
txNew.vin.push_back(CTxIn(coin.outpoint,CScript(),
nSequence));