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Merge #13657: wallet: assert to ensure accuracy of CMerkleTx::GetBlocksToMaturity

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93de2891fa wallet: assert to ensure accuracy of CMerkleTx::GetBlocksToMaturity (Ben Woosley)

Pull request description:

  According to my understanding, it should not be possible for coinbase
  transactions to be conflicting, thus it should not be possible for
  GetDepthInMainChain to return a negative result. If it did, this would
  also result in innacurate results for GetBlocksToMaturity due to the
  math therein. asserting ensures accuracy.

Tree-SHA512: 8e71c26f09fe457cfb00c362ca27066f7f018ea2af1f395090fdc7fd9f5964b76f4317c23f7a4923776f00087558511da5c1c368095be39fb1bacc614a93c32f
This commit is contained in:
Wladimir J. van der Laan 2018-08-07 14:09:13 +02:00
commit 51c693d49e
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1 changed files with 3 additions and 1 deletions
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4
src/wallet/wallet.cpp
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@ -4378,7 +4378,9 @@ int CMerkleTx::GetBlocksToMaturity() const
{ {
if (!IsCoinBase()) if (!IsCoinBase())
return 0; return 0;
return std::max(0, (COINBASE_MATURITY+1) - GetDepthInMainChain()); int chain_depth = GetDepthInMainChain();
assert(chain_depth >= 0); // coinbase tx should not be conflicted
return std::max(0, (COINBASE_MATURITY+1) - chain_depth);
} }