core/vm, params: implement EIP 3541
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@ -34,6 +34,7 @@ var (
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ErrWriteProtection = errors.New("write protection")
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ErrReturnDataOutOfBounds = errors.New("return data out of bounds")
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ErrGasUintOverflow = errors.New("gas uint64 overflow")
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ErrInvalidCode = errors.New("invalid code: must not begin with 0xef")
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)
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// ErrStackUnderflow wraps an evm error when the items on the stack less
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@ -468,6 +468,11 @@ func (evm *EVM) create(caller ContractRef, codeAndHash *codeAndHash, gas uint64,
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err = ErrMaxCodeSizeExceeded
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}
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// Reject code starting with 0xEF if EIP-3541 is enabled.
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if err == nil && len(ret) >= 1 && ret[0] == 0xEF && evm.chainRules.IsLondon {
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err = ErrInvalidCode
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}
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// if the contract creation ran successfully and no errors were returned
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// calculate the gas required to store the code. If the code could not
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// be stored due to not enough gas set an error and let it be handled
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