diff options
Diffstat (limited to 'src/merkleblock.cpp')
| -rw-r--r-- | src/merkleblock.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/merkleblock.cpp b/src/merkleblock.cpp index ba5f7b400c..f0abea0611 100644 --- a/src/merkleblock.cpp +++ b/src/merkleblock.cpp @@ -59,6 +59,9 @@ CMerkleBlock::CMerkleBlock(const CBlock& block, const std::set<uint256>& txids) } uint256 CPartialMerkleTree::CalcHash(int height, unsigned int pos, const std::vector<uint256> &vTxid) { + //we can never have zero txs in a merkle block, we always need the coinbase tx + //if we do not have this assert, we can hit a memory access violation when indexing into vTxid + assert(vTxid.size() != 0); if (height == 0) { // hash at height 0 is the txids themself return vTxid[pos]; |