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core/vm: check empty in extcodehash

This commit is contained in:
Martin Holst Swende 2018-10-26 08:52:41 +02:00
parent 8ed4739176
commit 1b6fd032e3
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1 changed files with 6 additions and 1 deletions
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7
core/vm/instructions.go
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@ -544,7 +544,12 @@ func opExtCodeCopy(pc *uint64, interpreter *EVMInterpreter, contract *Contract,
// this account should be regarded as a non-existent account and zero should be returned. // this account should be regarded as a non-existent account and zero should be returned.
func opExtCodeHash(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opExtCodeHash(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
slot := stack.peek() slot := stack.peek()
slot.SetBytes(interpreter.evm.StateDB.GetCodeHash(common.BigToAddress(slot)).Bytes()) address := common.BigToAddress(slot)
if interpreter.evm.StateDB.Empty(address) {
slot.SetUint64(0)
} else {
slot.SetBytes(interpreter.evm.StateDB.GetCodeHash(address).Bytes())
}
return nil, nil return nil, nil
} }