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Merge #10957: Avoid returning a BIP9Stats object with uninitialized values

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3eb53b867 Avoid returning a BIP9Stats object with uninitialized values (practicalswift)

Pull request description:

  Uninitialized data potentially used in `rpc/blockchain.cpp`:

  ```
  static UniValue BIP9SoftForkDesc(const Consensus::Params& consensusParams, Consensus::DeploymentPos id)
  {
      ...
      const ThresholdState thresholdState = VersionBitsTipState(consensusParams, id);
      ...
      if (THRESHOLD_STARTED == thresholdState)
      {
          UniValue statsUV(UniValue::VOBJ);
          BIP9Stats statsStruct = VersionBitsTipStatistics(consensusParams, id);
          statsUV.push_back(Pair("period", statsStruct.period));
          statsUV.push_back(Pair("threshold", statsStruct.threshold));
          statsUV.push_back(Pair("elapsed", statsStruct.elapsed));
          statsUV.push_back(Pair("count", statsStruct.count));
          statsUV.push_back(Pair("possible", statsStruct.possible));
          rv.push_back(Pair("statistics", statsUV));
      }
      ...
      return rv;
  }
  ```

  Friendly ping @pinheadmz :-)

Tree-SHA512: cc1debe11d81157b9fa8e6064bfec199524cd1e2d0230ff35f45d97ecabbc664df8423edb1c9e4ba3daf19bbd51ab87bb50e5e5cd279be1d2aa1f7d8b300f148
This commit is contained in:
MarcoFalke 2017-08-16 02:45:09 +02:00
commit a46a671e25
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1 changed files with 1 additions and 1 deletions
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src/versionbits.cpp
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@ -107,7 +107,7 @@ ThresholdState AbstractThresholdConditionChecker::GetStateFor(const CBlockIndex*
// return the numerical statistics of blocks signalling the specified BIP9 condition in this current period
BIP9Stats AbstractThresholdConditionChecker::GetStateStatisticsFor(const CBlockIndex* pindex, const Consensus::Params& params) const
{
BIP9Stats stats;
BIP9Stats stats = {};
stats.period = Period(params);
stats.threshold = Threshold(params);