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author | Adam Jonas <jonas@chaincode.com> | 2019-10-21 13:17:22 -0400 |
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committer | Aurèle Oulès <aurele@oules.com> | 2022-05-05 15:55:44 +0200 |
commit | 308dd2e93e92f4cac4e7d75478316af9bb2b77b8 (patch) | |
tree | 520c6a3e925de6de2ded46a439c5b09a528f374f /src/test/miner_tests.cpp | |
parent | b1c5991eebb916755be188f355ad36fe01a3f529 (diff) | |
download | bitcoin-308dd2e93e92f4cac4e7d75478316af9bb2b77b8.tar.xz |
Sanity assert GetAncestor() != nullptr where appropriate
Add sanity asserts for return value of `CBlockIndex::GetAncestor()` where appropriate.
In validation.cpp `CheckSequenceLocks`, check the return value of `tip->GetAncestor(maxInputHeight)` stored into `lp->maxInputBlock`. If it ever returns `nullptr` because the ancestor isn't found, it's going to be a bad bug to keep going, since a `LockPoints` object with the `maxInputBlock` member set to `nullptr` signifies no relative lock time.
In the other places, the added asserts would prevent accidental dereferencing of a null pointer which is undefined behavior.
Co-Authored-By: Aurèle Oulès <aurele@oules.com>
Co-Authored-By: danra <danra@users.noreply.github.com>
Diffstat (limited to 'src/test/miner_tests.cpp')
-rw-r--r-- | src/test/miner_tests.cpp | 22 |
1 files changed, 13 insertions, 9 deletions
diff --git a/src/test/miner_tests.cpp b/src/test/miner_tests.cpp index f6c1d1efad..82a4257c76 100644 --- a/src/test/miner_tests.cpp +++ b/src/test/miner_tests.cpp @@ -446,16 +446,18 @@ BOOST_AUTO_TEST_CASE(CreateNewBlock_validity) BOOST_CHECK(CheckFinalTxAtTip(m_node.chainman->ActiveChain().Tip(), CTransaction{tx})); // Locktime passes BOOST_CHECK(!TestSequenceLocks(CTransaction{tx})); // Sequence locks fail - for (int i = 0; i < CBlockIndex::nMedianTimeSpan; i++) - m_node.chainman->ActiveChain().Tip()->GetAncestor(m_node.chainman->ActiveChain().Tip()->nHeight - i)->nTime += 512; //Trick the MedianTimePast - + const int SEQUENCE_LOCK_TIME = 512; // Sequence locks pass 512 seconds later + for (int i = 0; i < CBlockIndex::nMedianTimeSpan; ++i) + m_node.chainman->ActiveChain().Tip()->GetAncestor(m_node.chainman->ActiveChain().Tip()->nHeight - i)->nTime += SEQUENCE_LOCK_TIME; // Trick the MedianTimePast { CBlockIndex* active_chain_tip = m_node.chainman->ActiveChain().Tip(); - BOOST_CHECK(SequenceLocks(CTransaction(tx), flags, prevheights, CreateBlockIndex(active_chain_tip->nHeight + 1, active_chain_tip))); // Sequence locks pass 512 seconds later + BOOST_CHECK(SequenceLocks(CTransaction(tx), flags, prevheights, CreateBlockIndex(active_chain_tip->nHeight + 1, active_chain_tip))); } - for (int i = 0; i < CBlockIndex::nMedianTimeSpan; i++) - m_node.chainman->ActiveChain().Tip()->GetAncestor(m_node.chainman->ActiveChain().Tip()->nHeight - i)->nTime -= 512; //undo tricked MTP + for (int i = 0; i < CBlockIndex::nMedianTimeSpan; ++i) { + CBlockIndex* ancestor{Assert(m_node.chainman->ActiveChain().Tip()->GetAncestor(m_node.chainman->ActiveChain().Tip()->nHeight - i))}; + ancestor->nTime -= SEQUENCE_LOCK_TIME; // undo tricked MTP + } // absolute height locked tx.vin[0].prevout.hash = txFirst[2]->GetHash(); @@ -500,9 +502,11 @@ BOOST_AUTO_TEST_CASE(CreateNewBlock_validity) // but relative locked txs will if inconsistently added to mempool. // For now these will still generate a valid template until BIP68 soft fork BOOST_CHECK_EQUAL(pblocktemplate->block.vtx.size(), 3U); - // However if we advance height by 1 and time by 512, all of them should be mined - for (int i = 0; i < CBlockIndex::nMedianTimeSpan; i++) - m_node.chainman->ActiveChain().Tip()->GetAncestor(m_node.chainman->ActiveChain().Tip()->nHeight - i)->nTime += 512; //Trick the MedianTimePast + // However if we advance height by 1 and time by SEQUENCE_LOCK_TIME, all of them should be mined + for (int i = 0; i < CBlockIndex::nMedianTimeSpan; ++i) { + CBlockIndex* ancestor{Assert(m_node.chainman->ActiveChain().Tip()->GetAncestor(m_node.chainman->ActiveChain().Tip()->nHeight - i))}; + ancestor->nTime += SEQUENCE_LOCK_TIME; // Trick the MedianTimePast + } m_node.chainman->ActiveChain().Tip()->nHeight++; SetMockTime(m_node.chainman->ActiveChain().Tip()->GetMedianTimePast() + 1); |