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-rw-r--r--src/validation.cpp38
1 files changed, 17 insertions, 21 deletions
diff --git a/src/validation.cpp b/src/validation.cpp
index ac16af3ee7..ed94be5c26 100644
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -1248,46 +1248,42 @@ bool AbortNode(CValidationState& state, const std::string& strMessage, const std
} // anon namespace
+enum DisconnectResult
+{
+ DISCONNECT_OK, // All good.
+ DISCONNECT_UNCLEAN, // Rolled back, but UTXO set was inconsistent with block.
+ DISCONNECT_FAILED // Something else went wrong.
+};
+
/**
* Apply the undo operation of a CTxInUndo to the given chain state.
* @param undo The undo object.
* @param view The coins view to which to apply the changes.
* @param out The out point that corresponds to the tx input.
- * @return True on success.
+ * @return A DisconnectResult as an int
*/
-bool ApplyTxInUndo(const CTxInUndo& undo, CCoinsViewCache& view, const COutPoint& out)
+int ApplyTxInUndo(const CTxInUndo& undo, CCoinsViewCache& view, const COutPoint& out)
{
bool fClean = true;
CCoinsModifier coins = view.ModifyCoins(out.hash);
if (undo.nHeight != 0) {
// undo data contains height: this is the last output of the prevout tx being spent
- if (!coins->IsPruned())
- fClean = fClean && error("%s: undo data overwriting existing transaction", __func__);
- coins->Clear();
+ if (!coins->IsPruned()) fClean = false; // overwriting existing transaction
coins->fCoinBase = undo.fCoinBase;
coins->nHeight = undo.nHeight;
coins->nVersion = undo.nVersion;
} else {
- if (coins->IsPruned())
- fClean = fClean && error("%s: undo data adding output to missing transaction", __func__);
+ if (coins->IsPruned()) fClean = false; // adding output to missing transaction
}
- if (coins->IsAvailable(out.n))
- fClean = fClean && error("%s: undo data overwriting existing output", __func__);
+ if (coins->IsAvailable(out.n)) fClean = false; // overwriting existing output
if (coins->vout.size() < out.n+1)
coins->vout.resize(out.n+1);
coins->vout[out.n] = undo.txout;
- return fClean;
+ return fClean ? DISCONNECT_OK : DISCONNECT_UNCLEAN;
}
-enum DisconnectResult
-{
- DISCONNECT_OK, // All good.
- DISCONNECT_UNCLEAN, // Rolled back, but UTXO set was inconsistent with block.
- DISCONNECT_FAILED // Something else went wrong.
-};
-
/** Undo the effects of this block (with given index) on the UTXO set represented by coins.
* When UNCLEAN or FAILED is returned, view is left in an indeterminate state. */
static DisconnectResult DisconnectBlock(const CBlock& block, const CBlockIndex* pindex, CCoinsViewCache& view)
@@ -1329,8 +1325,7 @@ static DisconnectResult DisconnectBlock(const CBlock& block, const CBlockIndex*
// but it must be corrected before txout nversion ever influences a network rule.
if (outsBlock.nVersion < 0)
outs->nVersion = outsBlock.nVersion;
- if (*outs != outsBlock)
- fClean = fClean && error("DisconnectBlock(): added transaction mismatch? database corrupted");
+ if (*outs != outsBlock) fClean = false; // transaction mismatch
// remove outputs
outs->Clear();
@@ -1346,8 +1341,9 @@ static DisconnectResult DisconnectBlock(const CBlock& block, const CBlockIndex*
for (unsigned int j = tx.vin.size(); j-- > 0;) {
const COutPoint &out = tx.vin[j].prevout;
const CTxInUndo &undo = txundo.vprevout[j];
- if (!ApplyTxInUndo(undo, view, out))
- fClean = false;
+ int res = ApplyTxInUndo(undo, view, out);
+ if (res == DISCONNECT_FAILED) return DISCONNECT_FAILED;
+ fClean = fClean && res != DISCONNECT_UNCLEAN;
}
}
}