Merge branch 'master' of https://github.com/gavofyork/ethcore into evm_tests

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "res/ethereum/tests"]
+	path = res/ethereum/tests
+	url = git@github.com:ethereum/tests

res/ethereum/tests

@@ -0,0 +1 @@
+Subproject commit dc86e6359675440aea59ddb48648a01c799925d8

src/basic_types.rs

@@ -5,3 +5,8 @@ pub type LogBloom = H2048;
 
 /// Constant 2048-bit datum for 0. Often used as a default.
 pub static ZERO_LOGBLOOM: LogBloom = H2048([0x00; 256]);
+
+pub enum Seal {
+	With,
+	Without,
+}

src/block.rs

@@ -129,7 +129,7 @@ impl<'x, 'y> OpenBlock<'x, 'y> {
 	/// Alter the extra_data for the block.
 	pub fn set_extra_data(&mut self, extra_data: Bytes) -> Result<(), BlockError> {
 		if extra_data.len() > self.engine.maximum_extra_data_size() {
-			Err(BlockError::ExtraDataOutOfBounds(OutOfBounds{min: 0, max: self.engine.maximum_extra_data_size(), found: extra_data.len()}))
+			Err(BlockError::ExtraDataOutOfBounds(OutOfBounds{min: None, max: Some(self.engine.maximum_extra_data_size()), found: extra_data.len()}))
 		} else {
 			self.block.header.set_extra_data(extra_data);
 			Ok(())
@@ -142,7 +142,7 @@ impl<'x, 'y> OpenBlock<'x, 'y> {
 	/// that the header itself is actually valid.
 	pub fn push_uncle(&mut self, valid_uncle_header: Header) -> Result<(), BlockError> {
 		if self.block.uncles.len() >= self.engine.maximum_uncle_count() {
-			return Err(BlockError::TooManyUncles(OutOfBounds{min: 0, max: self.engine.maximum_uncle_count(), found: self.block.uncles.len()}));
+			return Err(BlockError::TooManyUncles(OutOfBounds{min: None, max: Some(self.engine.maximum_uncle_count()), found: self.block.uncles.len()}));
 		}
 		// TODO: check number
 		// TODO: check not a direct ancestor (use last_hashes for that)

src/error.rs

@@ -11,8 +11,8 @@ pub struct Mismatch<T: fmt::Debug> {
 
 #[derive(Debug)]
 pub struct OutOfBounds<T: fmt::Debug> {
-	pub min: T,
-	pub max: T,
+	pub min: Option<T>,
+	pub max: Option<T>,
 	pub found: T,
 }
 
@@ -33,6 +33,11 @@ pub enum ExecutionError {
 	Internal
 }
 
+#[derive(Debug)]
+pub enum TransactionError {
+	InvalidGasLimit(OutOfBounds<U256>),
+}
+
 #[derive(Debug)]
 pub enum BlockError {
 	TooManyUncles(OutOfBounds<usize>),
@@ -83,6 +88,13 @@ pub enum Error {
 	Block(BlockError),
 	UnknownEngineName(String),
 	Execution(ExecutionError),
+	Transaction(TransactionError),
+}
+
+impl From<TransactionError> for Error {
+	fn from(err: TransactionError) -> Error {
+		Error::Transaction(err)
+	}
 }
 
 impl From<BlockError> for Error {
@@ -97,6 +109,18 @@ impl From<ExecutionError> for Error {
 	}
 }
 
+impl From<CryptoError> for Error {
+	fn from(err: CryptoError) -> Error {
+		Error::Util(UtilError::Crypto(err))
+	}
+}
+
+impl From<DecoderError> for Error {
+	fn from(err: DecoderError) -> Error {
+		Error::Util(UtilError::Decoder(err))
+	}
+}
+
 // TODO: uncomment below once https://github.com/rust-lang/rust/issues/27336 sorted.
 /*#![feature(concat_idents)]
 macro_rules! assimilate {

src/ethereum/ethash.rs

@@ -53,11 +53,11 @@ impl Engine for Ethash {
 		}
 		let min_gas_limit = decode(self.spec().engine_params.get("minGasLimit").unwrap());
 		if header.gas_limit < min_gas_limit {
-			return Err(From::from(BlockError::InvalidGasLimit(OutOfBounds { min: min_gas_limit, max: From::from(0), found: header.gas_limit }))); 
+			return Err(From::from(BlockError::InvalidGasLimit(OutOfBounds { min: Some(min_gas_limit), max: None, found: header.gas_limit }))); 
 		}
 		let maximum_extra_data_size = self.maximum_extra_data_size();
 		if header.number != 0 && header.extra_data.len() > maximum_extra_data_size {
-			return Err(From::from(BlockError::ExtraDataOutOfBounds(OutOfBounds { min: 0, max: maximum_extra_data_size, found: header.extra_data.len() }))); 
+			return Err(From::from(BlockError::ExtraDataOutOfBounds(OutOfBounds { min: None, max: Some(maximum_extra_data_size), found: header.extra_data.len() }))); 
 		}
 		// TODO: Verify seal (quick)
 		Ok(())
@@ -78,7 +78,7 @@ impl Engine for Ethash {
 		let min_gas = parent.gas_limit - parent.gas_limit / gas_limit_divisor;
 		let max_gas = parent.gas_limit + parent.gas_limit / gas_limit_divisor;
 		if header.gas_limit <= min_gas || header.gas_limit >= max_gas {
-			return Err(From::from(BlockError::InvalidGasLimit(OutOfBounds { min: min_gas, max: max_gas, found: header.gas_limit }))); 
+			return Err(From::from(BlockError::InvalidGasLimit(OutOfBounds { min: Some(min_gas), max: Some(max_gas), found: header.gas_limit }))); 
 		}
 		Ok(())
 	}

src/ethereum/mod.rs

@@ -12,19 +12,19 @@ pub use self::denominations::*;
 use super::spec::*;
 
 /// Create a new Olympic chain spec.
-pub fn new_olympic() -> Spec { Spec::from_json_utf8(include_bytes!("res/olympic.json")) }
+pub fn new_olympic() -> Spec { Spec::from_json_utf8(include_bytes!("../../res/ethereum/olympic.json")) }
 
 /// Create a new Frontier mainnet chain spec.
-pub fn new_frontier() -> Spec { Spec::from_json_utf8(include_bytes!("res/frontier.json")) }
+pub fn new_frontier() -> Spec { Spec::from_json_utf8(include_bytes!("../../res/ethereum/frontier.json")) }
 
 /// Create a new Frontier chain spec as though it never changes to Homestead.
-pub fn new_frontier_test() -> Spec { Spec::from_json_utf8(include_bytes!("res/frontier_test.json")) }
+pub fn new_frontier_test() -> Spec { Spec::from_json_utf8(include_bytes!("../../res/ethereum/frontier_test.json")) }
 
 /// Create a new Homestead chain spec as though it never changed from Frontier.
-pub fn new_homestead_test() -> Spec { Spec::from_json_utf8(include_bytes!("res/homestead_test.json")) }
+pub fn new_homestead_test() -> Spec { Spec::from_json_utf8(include_bytes!("../../res/ethereum/homestead_test.json")) }
 
 /// Create a new Morden chain spec.
-pub fn new_morden() -> Spec { Spec::from_json_utf8(include_bytes!("res/morden.json")) }
+pub fn new_morden() -> Spec { Spec::from_json_utf8(include_bytes!("../../res/ethereum/morden.json")) }
 
 #[cfg(test)]
 mod tests {

src/executive.rs

@@ -92,25 +92,25 @@ impl<'a> Executive<'a> {
 		}
 	}
 
-	/// Executes transaction.
-	pub fn transact(&mut self, t: &Transaction) -> ExecutionResult {
+	/// This funtion should be used to execute transaction.
+	pub fn transact(&mut self, t: &Transaction) -> Result<Executed, Error> {
 		// TODO: validate transaction signature ?/ sender
 
-		let sender = t.sender();
+		let sender = try!(t.sender());
 		let nonce = self.state.nonce(&sender);
 
 		// validate transaction nonce
 		if t.nonce != nonce {
-			return Err(ExecutionError::InvalidNonce { expected: nonce, is: t.nonce });
+			return Err(From::from(ExecutionError::InvalidNonce { expected: nonce, is: t.nonce }));
 		}
 		
 		// validate if transaction fits into given block
 		if self.info.gas_used + t.gas > self.info.gas_limit {
-			return Err(ExecutionError::BlockGasLimitReached { 
+			return Err(From::from(ExecutionError::BlockGasLimitReached { 
 				gas_limit: self.info.gas_limit, 
 				gas_used: self.info.gas_used, 
 				gas: t.gas 
-			});
+			}));
 		}
 
 		// TODO: we might need bigints here, or at least check overflows.
@@ -120,7 +120,7 @@ impl<'a> Executive<'a> {
 
 		// avoid unaffordable transactions
 		if balance < total_cost {
-			return Err(ExecutionError::NotEnoughCash { required: total_cost, is: balance });
+			return Err(From::from(ExecutionError::NotEnoughCash { required: total_cost, is: balance }));
 		}
 
 		// NOTE: there can be no invalid transactions from this point.
@@ -160,7 +160,7 @@ impl<'a> Executive<'a> {
 		};
 
 		// finalize here!
-		self.finalize(t, substate, backup, res)
+		Ok(try!(self.finalize(t, substate, backup, res)))
 	}
 
 	/// Calls contract function with given contract params.
@@ -232,7 +232,7 @@ impl<'a> Executive<'a> {
 				// real ammount to refund
 				let refund = cmp::min(sstore_refunds + suicide_refunds, (t.gas - gas_left) / U256::from(2)) + gas_left;
 				let refund_value = refund * t.gas_price;
-				self.state.add_balance(&t.sender(), &refund_value);
+				self.state.add_balance(&t.sender().unwrap(), &refund_value);
 				
 				// fees earned by author
 				let fees = (t.gas - refund) * t.gas_price;

src/header.rs

@@ -34,11 +34,6 @@ pub struct Header {
 	pub hash: RefCell<Option<H256>>,
 }
 
-pub enum Seal {
-	With,
-	Without,
-}
-
 impl Header {
 	/// Create a new, default-valued, header.
 	pub fn new() -> Header {

src/state.rs

@@ -2,7 +2,7 @@ use common::*;
 use engine::Engine;
 use executive::Executive;
 
-pub type ApplyResult = Result<Receipt, ExecutionError>;
+pub type ApplyResult = Result<Receipt, Error>;
 
 /// Representation of the entire state of all accounts in the system.
 pub struct State {
@@ -76,6 +76,11 @@ impl State {
 		self.cache.borrow_mut().insert(account.clone(), None);
 	}
 
+	/// Determine whether an account exists.
+	pub fn exists(&self, a: &Address) -> bool {
+		self.cache.borrow().get(&a).unwrap_or(&None).is_some() || SecTrieDB::new(&self.db, &self.root).contains(&a)
+	}
+
 	/// Get the balance of account `a`.
 	pub fn balance(&self, a: &Address) -> U256 {
 		self.get(a, false).as_ref().map(|account| account.balance().clone()).unwrap_or(U256::from(0u8))
@@ -287,9 +292,12 @@ fn get_from_database() {
 fn remove() {
 	let a = Address::zero();
 	let mut s = State::new_temp();
+	assert_eq!(s.exists(&a), false);
 	s.inc_nonce(&a);
+	assert_eq!(s.exists(&a), true);
 	assert_eq!(s.nonce(&a), U256::from(1u64));
 	s.kill_account(&a);
+	assert_eq!(s.exists(&a), false);
 	assert_eq!(s.nonce(&a), U256::from(0u64));
 }
 
@@ -300,20 +308,24 @@ fn remove_from_database() {
 		let mut s = State::new_temp();
 		s.inc_nonce(&a);
 		s.commit();
+		assert_eq!(s.exists(&a), true);
 		assert_eq!(s.nonce(&a), U256::from(1u64));
 		s.drop()
 	};
 
 	let (r, db) = {
 		let mut s = State::from_existing(db, r, U256::from(0u8));
+		assert_eq!(s.exists(&a), true);
 		assert_eq!(s.nonce(&a), U256::from(1u64));
 		s.kill_account(&a);
 		s.commit();
+		assert_eq!(s.exists(&a), false);
 		assert_eq!(s.nonce(&a), U256::from(0u64));
 		s.drop()
 	};
 
 	let s = State::from_existing(db, r, U256::from(0u8));
+	assert_eq!(s.exists(&a), false);
 	assert_eq!(s.nonce(&a), U256::from(0u64));
 }
 

src/transaction.rs

@@ -1,4 +1,7 @@
 use util::*;
+use basic_types::*;
+use error::*;
+use evm::Schedule;
 
 pub enum Action {
 	Create,
@@ -15,12 +18,18 @@ pub struct Transaction {
 	pub value: U256,
 	pub data: Bytes,
 
+	// signature
+	pub v: u8,
+	pub r: U256,
+	pub s: U256,
+
 	hash: RefCell<Option<H256>>, //TODO: make this private
 }
 
-impl RlpStandard for Transaction {
-	fn rlp_append(&self, s: &mut RlpStream) {
-		s.append_list(6);
+impl Transaction {
+	/// Append object into RLP stream, optionally with or without the signature.
+	pub fn rlp_append_opt(&self, s: &mut RlpStream, with_seal: Seal) {
+		s.append_list(6 + match with_seal { Seal::With => 3, _ => 0 });
 		s.append(&self.nonce);
 		s.append(&self.gas_price);
 		s.append(&self.gas);
@@ -30,9 +39,24 @@ impl RlpStandard for Transaction {
 		};
 		s.append(&self.value);
 		s.append(&self.data);
+		match with_seal {
+			Seal::With => { s.append(&(self.v as u16)).append(&self.r).append(&self.s); },
+			_ => {}
 		}
 	}
 
+	/// Get the RLP serialisation of the object, optionally with or without the signature.
+	pub fn rlp_bytes_opt(&self, with_seal: Seal) -> Bytes {
+		let mut s = RlpStream::new();
+		self.rlp_append_opt(&mut s, with_seal);
+		s.out()
+	}
+}
+
+impl RlpStandard for Transaction {
+	fn rlp_append(&self, s: &mut RlpStream) { self.rlp_append_opt(s, Seal::With) }
+}
+
 impl Transaction {
 	/// Get the hash of this header (sha3 of the RLP).
 	pub fn hash(&self) -> H256 {
@@ -54,8 +78,41 @@ impl Transaction {
 	/// Returns transaction type.
 	pub fn action(&self) -> &Action { &self.action }
 
+	/// 0 is `v` is 27, 1 if 28, and 4 otherwise.
+	pub fn standard_v(&self) -> u8 { match self.v { 27 => 0, 28 => 1, _ => 4 } }
+
+	/// Construct a signature object from the sig.
+	pub fn signature(&self) -> Signature { Signature::from_rsv(&From::from(&self.r), &From::from(&self.s), self.standard_v()) }
+
+	/// The message hash of the transaction.
+	pub fn message_hash(&self) -> H256 { self.rlp_bytes_opt(Seal::Without).sha3() }
+
 	/// Returns transaction sender.
-	pub fn sender(&self) -> Address { Address::new() }
+	pub fn sender(&self) -> Result<Address, Error> { Ok(From::from(try!(ec::recover(&self.signature(), &self.message_hash())).sha3())) }
+
+	/// Get the transaction cost in gas for the given params.
+	pub fn gas_required_for(is_create: bool, data: &[u8], schedule: &Schedule) -> U256 {
+		// CRITICAL TODO XXX FIX NEED BIGINT!!!!!
+		data.iter().fold(
+			U256::from(if is_create {schedule.tx_create_gas} else {schedule.tx_gas}),
+			|g, b| g + U256::from(match *b { 0 => schedule.tx_data_zero_gas, _ => schedule.tx_data_non_zero_gas})
+		)
+	}
+
+	/// Get the transaction cost in gas for this transaction.
+	pub fn gas_required(&self, schedule: &Schedule) -> U256 {
+		Self::gas_required_for(match self.action{Action::Create=>true, Action::Call(_)=>false}, &self.data, schedule)
+	}
+
+	/// Do basic validation, checking for valid signature and minimum gas,
+	pub fn validate(self, schedule: &Schedule) -> Result<Transaction, Error> {
+		try!(self.sender());
+		if self.gas < self.gas_required(&schedule) {
+			Err(From::from(TransactionError::InvalidGasLimit(OutOfBounds{min: Some(self.gas_required(&schedule)), max: None, found: self.gas})))
+		} else {
+			Ok(self)
+		}
+	}
 }
 
 impl Decodable for Action {
@@ -72,17 +129,126 @@ impl Decodable for Action {
 impl Decodable for Transaction {
 	fn decode<D>(decoder: &D) -> Result<Self, DecoderError> where D: Decoder {
 		let d = try!(decoder.as_list());
-
-		let transaction = Transaction {
+		if d.len() != 9 {
+			return Err(DecoderError::RlpIncorrectListLen);
+		}
+		Ok(Transaction {
 			nonce: try!(Decodable::decode(&d[0])),
 			gas_price: try!(Decodable::decode(&d[1])),
 			gas: try!(Decodable::decode(&d[2])),
 			action: try!(Decodable::decode(&d[3])),
 			value: try!(Decodable::decode(&d[4])),
 			data: try!(Decodable::decode(&d[5])),
+			v: try!(u16::decode(&d[6])) as u8,
+			r: try!(Decodable::decode(&d[7])),
+			s: try!(Decodable::decode(&d[8])),
 			hash: RefCell::new(None)
-		};
+		})
+	}
+}
 
-		Ok(transaction)
+pub fn clean(s: &str) -> &str {
+	if s.len() >= 2 && &s[0..2] == "0x" {
+		&s[2..]
+	} else {
+		s
 	}
 }
+
+pub fn bytes_from_json(json: &Json) -> Bytes {
+	let s = json.as_string().unwrap();
+	if s.len() % 2 == 1 {
+		FromHex::from_hex(&("0".to_string() + &(clean(s).to_string()))[..]).unwrap_or(vec![])
+	} else {
+		FromHex::from_hex(clean(s)).unwrap_or(vec![])
+	}
+}
+
+pub fn address_from_json(json: &Json) -> Address {
+	let s = json.as_string().unwrap();
+	if s.len() % 2 == 1 {
+		address_from_hex(&("0".to_string() + &(clean(s).to_string()))[..])
+	} else {
+		address_from_hex(clean(s))
+	}
+}
+
+pub fn u256_from_json(json: &Json) -> U256 {
+	let s = json.as_string().unwrap();
+	if s.len() >= 2 && &s[0..2] == "0x" {
+		// hex
+		U256::from_str(&s[2..]).unwrap()
+	}
+	else {
+		// dec
+		U256::from_dec_str(s).unwrap()
+	}
+}
+
+#[cfg(test)]
+mod tests {
+	use util::*;
+	use evm::Schedule;
+	use header::BlockNumber;
+	use super::*;
+
+	#[test]
+	fn sender_test() {
+		let t: Transaction = decode(&FromHex::from_hex("f85f800182520894095e7baea6a6c7c4c2dfeb977efac326af552d870a801ba048b55bfa915ac795c431978d8a6a992b628d557da5ff759b307d495a36649353a0efffd310ac743f371de3b9f7f9cb56c0b28ad43601b4ab949f53faa07bd2c804").unwrap());
+		assert_eq!(t.data, b"");
+		assert_eq!(t.gas, U256::from(0x5208u64));
+		assert_eq!(t.gas_price, U256::from(0x01u64));
+		assert_eq!(t.nonce, U256::from(0x00u64));
+		if let Action::Call(ref to) = t.action {
+			assert_eq!(*to, address_from_hex("095e7baea6a6c7c4c2dfeb977efac326af552d87"));
+		} else { panic!(); }
+		assert_eq!(t.value, U256::from(0x0au64));
+		assert_eq!(t.sender().unwrap(), address_from_hex("0f65fe9276bc9a24ae7083ae28e2660ef72df99e"));
+	}
+
+	fn do_json_test(json_data: &[u8]) -> Vec<String> {
+		let json = Json::from_str(::std::str::from_utf8(json_data).unwrap()).expect("Json is invalid");
+		let mut failed = Vec::new();
+		let schedule = Schedule::new_frontier();
+		for (name, test) in json.as_object().unwrap() {
+			let mut fail = false;
+			let mut fail_unless = |cond: bool| if !cond && fail { failed.push(name.to_string()); fail = true };
+			let _ = BlockNumber::from_str(test["blocknumber"].as_string().unwrap()).unwrap();
+			let rlp = bytes_from_json(&test["rlp"]);
+			let res = UntrustedRlp::new(&rlp).as_val().map_err(|e| From::from(e)).and_then(|t: Transaction| t.validate(&schedule));
+			fail_unless(test.find("transaction").is_none() == res.is_err());
+			if let (Some(&Json::Object(ref tx)), Some(&Json::String(ref expect_sender))) = (test.find("transaction"), test.find("sender")) {
+				let t = res.unwrap();
+				fail_unless(t.sender().unwrap() == address_from_hex(clean(expect_sender)));
+				fail_unless(t.data == bytes_from_json(&tx["data"]));
+				fail_unless(t.gas == u256_from_json(&tx["gasLimit"]));
+				fail_unless(t.gas_price == u256_from_json(&tx["gasPrice"]));
+				fail_unless(t.nonce == u256_from_json(&tx["nonce"]));
+				fail_unless(t.value == u256_from_json(&tx["value"]));
+				if let Action::Call(ref to) = t.action {
+					fail_unless(to == &address_from_json(&tx["to"]));
+				} else {
+					fail_unless(bytes_from_json(&tx["to"]).len() == 0);
+				}
+			}
+		}
+		for f in failed.iter() {
+			println!("FAILED: {:?}", f);
+		}
+		failed
+	}
+
+	macro_rules! declare_test {
+		($test_set_name: ident/$name: ident) => {
+			#[test]
+			#[allow(non_snake_case)]
+			fn $name() {
+				assert!(do_json_test(include_bytes!(concat!("../res/ethereum/tests/", stringify!($test_set_name), "/", stringify!($name), ".json"))).len() == 0);
+			}
+		}
+	}
+
+	declare_test!{TransactionTests/ttTransactionTest}
+	declare_test!{TransactionTests/tt10mbDataField}
+	declare_test!{TransactionTests/ttWrongRLPTransaction}
+}

src/verification.rs

@@ -47,7 +47,7 @@ pub fn verify_block_final(bytes: &[u8], engine: &Engine, bc: &BlockChain) -> Res
 	let num_uncles = Rlp::new(bytes).at(2).item_count();
 	if num_uncles != 0 {
 		if num_uncles > engine.maximum_uncle_count() {
-			return Err(From::from(BlockError::TooManyUncles(OutOfBounds { min: 0, max: engine.maximum_uncle_count(), found: num_uncles })));
+			return Err(From::from(BlockError::TooManyUncles(OutOfBounds { min: None, max: Some(engine.maximum_uncle_count()), found: num_uncles })));
 		}
 
 		let mut excluded = HashSet::new();
@@ -83,10 +83,10 @@ pub fn verify_block_final(bytes: &[u8], engine: &Engine, bc: &BlockChain) -> Res
 
 			let depth = if header.number > uncle.number { header.number - uncle.number } else { 0 };
 			if depth > 6 {
-				return Err(From::from(BlockError::UncleTooOld(OutOfBounds { min: header.number - depth, max: header.number - 1, found: uncle.number })));
+				return Err(From::from(BlockError::UncleTooOld(OutOfBounds { min: Some(header.number - depth), max: Some(header.number - 1), found: uncle.number })));
 			}
 			else if depth < 1 {
-				return Err(From::from(BlockError::UncleIsBrother(OutOfBounds { min: header.number - depth, max: header.number - 1, found: uncle.number })));
+				return Err(From::from(BlockError::UncleIsBrother(OutOfBounds { min: Some(header.number - depth), max: Some(header.number - 1), found: uncle.number })));
 			}
 
 			// cB
@@ -115,10 +115,10 @@ pub fn verify_block_final(bytes: &[u8], engine: &Engine, bc: &BlockChain) -> Res
 /// Check basic header parameters.
 fn verify_header(header: &Header) -> Result<(), Error> {
 	if header.number > From::from(BlockNumber::max_value()) {
-		return Err(From::from(BlockError::InvalidNumber(OutOfBounds { max: From::from(BlockNumber::max_value()), min: 0, found: header.number })))
+		return Err(From::from(BlockError::InvalidNumber(OutOfBounds { max: Some(From::from(BlockNumber::max_value())), min: None, found: header.number })))
 	}
 	if header.gas_used > header.gas_limit {
-		return Err(From::from(BlockError::TooMuchGasUsed(OutOfBounds { max: header.gas_limit, min: From::from(0), found: header.gas_used })));
+		return Err(From::from(BlockError::TooMuchGasUsed(OutOfBounds { max: Some(header.gas_limit), min: None, found: header.gas_used })));
 	}
 	Ok(())
 }
@@ -129,10 +129,10 @@ fn verify_parent(header: &Header, parent: &Header) -> Result<(), Error> {
 		return Err(From::from(BlockError::InvalidParentHash(Mismatch { expected: parent.hash(), found: header.parent_hash.clone() })))
 	}
 	if header.timestamp <= parent.timestamp {
-		return Err(From::from(BlockError::InvalidTimestamp(OutOfBounds { max: u64::max_value(), min: parent.timestamp + 1, found: header.timestamp })))
+		return Err(From::from(BlockError::InvalidTimestamp(OutOfBounds { max: None, min: Some(parent.timestamp + 1), found: header.timestamp })))
 	}
 	if header.number <= parent.number {
-		return Err(From::from(BlockError::InvalidNumber(OutOfBounds { max: BlockNumber::max_value(), min: parent.number + 1, found: header.number })));
+		return Err(From::from(BlockError::InvalidNumber(OutOfBounds { max: None, min: Some(parent.number + 1), found: header.number })));
 	}
 	Ok(())
 }