Added code to state processor.

core/state_processor.go

@@ -334,6 +334,7 @@ func ApplyTransaction(bc ChainContext, author *common.Address, gp *GasPool, stat
 	receipt := types.NewReceipt(root, failedExe, *usedGas)
 	receipt.TxHash = tx.Hash()
 	receipt.GasUsed = result.UsedGas
+	receipt.EffectiveGasPrice = tx.EffectiveGasPrice(big.NewInt(0), nil)
 	// if the transaction created a contract, store the creation address in the receipt.
 	if msg.To() == nil {
 		receipt.ContractAddress = crypto.CreateAddress(vmenv.Context.Origin, tx.Nonce())

core/types/transaction.go

@@ -536,6 +536,11 @@ func (tx *Transaction) SenderAddress() (common.Address, error) {
 	return addr, nil
 }
 
+// EffectiveGasPrice returns the effective gas price of the transaction.
+func (tx *Transaction) EffectiveGasPrice(dst *big.Int, baseFee *big.Int) *big.Int {
+	return tx.data.effectiveGasPrice(dst, baseFee)
+}
+
 // TxByNonce implements the sort interface to allow sorting a list of transactions
 // by their nonces. This is usually only useful for sorting transactions from a
 // single account, otherwise a nonce comparison doesn't make much sense.