do not create new account for cx txn (#3391)

harmony-one · Oct 16, 2020 · f21b7d6 · f21b7d6
1 parent 9cdfa94
commit f21b7d6
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Showing 2 changed files with 6 additions and 4 deletions.
diff --git a/core/state/statedb.go b/core/state/statedb.go
@@ -739,9 +739,11 @@ func (db *DB) Prepare(thash, bhash common.Hash, ti int) {
 }
 
 func (db *DB) clearJournalAndRefund() {
-	db.journal = newJournal()
-	db.validRevisions = db.validRevisions[:0]
-	db.refund = 0
+	if len(db.journal.entries) > 0 {
+		db.journal = newJournal()
+		db.refund = 0
+	}
+	db.validRevisions = db.validRevisions[:0] // Snapshots can be created without journal entires
 }
 
 // Commit writes the state to the underlying in-memory trie database.

diff --git a/core/vm/evm.go b/core/vm/evm.go
@@ -217,7 +217,7 @@ func (evm *EVM) Call(caller ContractRef, addr common.Address, input []byte, gas
 		to       = AccountRef(addr)
 		snapshot = evm.StateDB.Snapshot()
 	)
-	if !evm.StateDB.Exist(addr) {
+	if !evm.StateDB.Exist(addr) && txType != types.SubtractionOnly {
 		precompiles := PrecompiledContractsHomestead
 		if evm.ChainConfig().IsS3(evm.EpochNumber) {
 			precompiles = PrecompiledContractsByzantium