v2.6.3-beta (#11040)

* add more tx tests (#11038)
* Fix parallel transactions race-condition (#10995)
* Add blake2_f precompile (#11017)
* [trace] introduce trace failed to Ext (#11019)
* Edit publish-onchain.sh to use https (#11016)
* Fix deadlock in network-devp2p (#11013)
* EIP 1108: Reduce alt_bn128 precompile gas costs (#11008)
* xDai chain support and nodes list update (#10989)
* EIP 2028: transaction gas lowered from 68 to 16 (#10987)
* EIP-1344 Add CHAINID op-code (#10983)
* manual publish jobs for releases, no changes for nightlies (#10977)
* [blooms-db] Fix benchmarks (#10974)
* Verify transaction against its block during import (#10954)
* Better error message for rpc gas price errors (#10931)
* Fix fork choice (#10837)
* Fix compilation on recent nightlies (#10991)

ethcore/Cargo.toml

@@ -10,7 +10,6 @@ authors = ["Parity Technologies <admin@parity.io>"]
 account-db = { path = "account-db" }
 ansi_term = "0.11"
 blooms-db = { path = "../util/blooms-db", optional = true }
-bn = { git = "https://github.com/paritytech/bn", default-features = false }
 common-types = { path = "types" }
 crossbeam-utils = "0.6"
 derive_more = "0.14.0"
@@ -21,6 +20,7 @@ ethabi-derive = "8.0"
 ethash = { path = "../ethash" }
 ethcore-blockchain = { path = "./blockchain" }
 ethcore-bloom-journal = { path = "../util/bloom" }
+ethcore-builtin = { path = "./builtin" }
 ethcore-call-contract = { path = "./call-contract" }
 ethcore-db = { path = "./db" }
 ethcore-io = { path = "../util/io" }
@@ -47,10 +47,8 @@ lru-cache = "0.1"
 macros = { path = "../util/macros" }
 memory-cache = { path = "../util/memory-cache" }
 memory-db = "0.12.4"
-num = { version = "0.1", default-features = false, features = ["bigint"] }
 num_cpus = "1.2"
 parity-bytes = "0.1"
-parity-crypto = "0.4.0"
 parity-snappy = "0.1"
 parking_lot = "0.7"
 pod-account = { path = "pod-account" }

ethcore/blockchain/Cargo.toml

@@ -13,21 +13,23 @@ blooms-db = { path = "../../util/blooms-db" }
 common-types = { path = "../types" }
 ethcore-db = { path = "../db" }
 ethereum-types = "0.6.0"
+keccak-hash = "0.2.0"
 parity-util-mem = "0.1"
 itertools = "0.5"
 kvdb = "0.1"
 log = "0.4"
 parity-bytes = "0.1"
 parking_lot = "0.7"
-rayon = "1.1"
+rand = "0.6"
+rayon = "1.0"
 rlp = "0.4.0"
 rlp_compress = { path = "../../util/rlp-compress" }
 rlp_derive = { path = "../../util/rlp-derive" }
+triehash-ethereum = { version = "0.2",  path = "../../util/triehash-ethereum" }
 
 [dev-dependencies]
 env_logger = "0.5"
 ethkey = { path = "../../accounts/ethkey" }
-keccak-hash = "0.2.0"
 rustc-hex = "1.0"
 tempdir = "0.3"
 kvdb-memorydb = "0.1"

ethcore/blockchain/src/blockchain.rs

@@ -710,6 +710,10 @@ impl BlockChain {
 	///
 	/// If the tree route verges into pruned or unknown blocks,
 	/// `None` is returned.
+	///
+	/// `is_from_route_finalized` returns whether the `from` part of the
+	/// route contains a finalized block. This only holds if the two parts (from
+	/// and to) are on different branches, ie. on 2 different forks.
 	pub fn tree_route(&self, from: H256, to: H256) -> Option<TreeRoute> {
 		let mut from_branch = vec![];
 		let mut is_from_route_finalized = false;
@@ -723,9 +727,9 @@ impl BlockChain {
 		// reset from && to to the same level
 		while from_details.number > to_details.number {
 			from_branch.push(current_from);
+			is_from_route_finalized = is_from_route_finalized || from_details.is_finalized;
 			current_from = from_details.parent.clone();
 			from_details = self.block_details(&from_details.parent)?;
-			is_from_route_finalized = is_from_route_finalized || from_details.is_finalized;
 		}
 
 		while to_details.number > from_details.number {
@@ -739,9 +743,9 @@ impl BlockChain {
 		// move to shared parent
 		while current_from != current_to {
 			from_branch.push(current_from);
+			is_from_route_finalized = is_from_route_finalized || from_details.is_finalized;
 			current_from = from_details.parent.clone();
 			from_details = self.block_details(&from_details.parent)?;
-			is_from_route_finalized = is_from_route_finalized || from_details.is_finalized;
 
 			to_branch.push(current_to);
 			current_to = to_details.parent.clone();
@@ -2503,4 +2507,74 @@ mod tests {
 			assert_eq!(bc.epoch_transition_for(fork_hash).unwrap().block_number, 0);
 		}
 	}
+
+	#[test]
+	fn tree_rout_with_finalization() {
+		let genesis = BlockBuilder::genesis();
+		let a = genesis.add_block();
+		// First branch
+		let a1 = a.add_block_with_random_transactions();
+		let a2 = a1.add_block_with_random_transactions();
+		let a3 = a2.add_block_with_random_transactions();
+		// Second branch
+		let b1 = a.add_block_with_random_transactions();
+		let b2 = b1.add_block_with_random_transactions();
+
+		let a_hash = a.last().hash();
+		let a1_hash = a1.last().hash();
+		let a2_hash = a2.last().hash();
+		let a3_hash = a3.last().hash();
+		let b2_hash = b2.last().hash();
+
+		let bootstrap_chain = |blocks: Vec<&BlockBuilder>| {
+			let db = new_db();
+			let bc = new_chain(genesis.last().encoded(), db.clone());
+			let mut batch = db.key_value().transaction();
+			for block in blocks {
+				insert_block_batch(&mut batch, &bc, block.last().encoded(), vec![]);
+				bc.commit();
+			}
+			db.key_value().write(batch).unwrap();
+			(db, bc)
+		};
+
+		let mark_finalized = |block_hash: H256, db: &Arc<dyn BlockChainDB>, bc: &BlockChain| {
+			let mut batch = db.key_value().transaction();
+			bc.mark_finalized(&mut batch, block_hash).unwrap();
+			bc.commit();
+			db.key_value().write(batch).unwrap();
+		};
+
+		// Case 1: fork, with finalized common ancestor
+		{
+			let (db, bc) = bootstrap_chain(vec![&a, &a1, &a2, &a3, &b1, &b2]);
+			assert_eq!(bc.best_block_hash(), a3_hash);
+			assert_eq!(bc.block_hash(2).unwrap(), a1_hash);
+
+			mark_finalized(a_hash, &db, &bc);
+			assert!(!bc.tree_route(a3_hash, b2_hash).unwrap().is_from_route_finalized);
+			assert!(!bc.tree_route(b2_hash, a3_hash).unwrap().is_from_route_finalized);
+		}
+
+		// Case 2: fork with a finalized block on a branch
+		{
+			let (db, bc) = bootstrap_chain(vec![&a, &a1, &a2, &a3, &b1, &b2]);
+			assert_eq!(bc.best_block_hash(), a3_hash);
+			assert_eq!(bc.block_hash(2).unwrap(), a1_hash);
+
+			mark_finalized(a2_hash, &db, &bc);
+			assert!(bc.tree_route(a3_hash, b2_hash).unwrap().is_from_route_finalized);
+			assert!(!bc.tree_route(b2_hash, a3_hash).unwrap().is_from_route_finalized);
+		}
+
+		// Case 3: no-fork, with a finalized block
+		{
+			let (db, bc) = bootstrap_chain(vec![&a, &a1, &a2]);
+			assert_eq!(bc.best_block_hash(), a2_hash);
+
+			mark_finalized(a1_hash, &db, &bc);
+			assert!(!bc.tree_route(a1_hash, a2_hash).unwrap().is_from_route_finalized);
+			assert!(!bc.tree_route(a2_hash, a1_hash).unwrap().is_from_route_finalized);
+		}
+	}
 }

ethcore/blockchain/src/generator.rs

@@ -21,11 +21,13 @@ use ethereum_types::{U256, H256, Bloom};
 
 use common_types::encoded;
 use common_types::header::Header;
-use common_types::transaction::SignedTransaction;
+use common_types::transaction::{SignedTransaction, Transaction, Action};
 use common_types::view;
 use common_types::views::BlockView;
+use keccak_hash::keccak;
 use rlp::encode;
 use rlp_derive::RlpEncodable;
+use triehash_ethereum::ordered_trie_root;
 
 /// Helper structure, used for encoding blocks.
 #[derive(Default, Clone, RlpEncodable)]
@@ -136,6 +138,29 @@ impl BlockBuilder {
 		})
 	}
 
+	/// Add a block with randomly generated transactions.
+	#[inline]
+	pub fn add_block_with_random_transactions(&self) -> Self {
+		// Maximum of ~50 transactions
+		let count = rand::random::<u8>() as usize / 5;
+		let transactions = std::iter::repeat_with(|| {
+			let data_len = rand::random::<u8>();
+			let data = std::iter::repeat_with(|| rand::random::<u8>())
+				.take(data_len as usize)
+				.collect::<Vec<_>>();
+			Transaction {
+				nonce: 0.into(),
+				gas_price: 0.into(),
+				gas: 100_000.into(),
+				action: Action::Create,
+				value: 100.into(),
+				data,
+			}.sign(&keccak("").into(), None)
+		}).take(count);
+
+		self.add_block_with_transactions(transactions)
+	}
+
 	/// Add a block with given transactions.
 	#[inline]
 	pub fn add_block_with_transactions<T>(&self, transactions: T) -> Self
@@ -166,11 +191,15 @@ impl BlockBuilder {
 			let mut block = Block::default();
 			let metadata = get_metadata();
 			let block_number = parent_number + 1;
+			let transactions = metadata.transactions;
+			let transactions_root = ordered_trie_root(transactions.iter().map(rlp::encode));
+
 			block.header.set_parent_hash(parent_hash);
 			block.header.set_number(block_number);
 			block.header.set_log_bloom(metadata.bloom);
 			block.header.set_difficulty(metadata.difficulty);
-			block.transactions = metadata.transactions;
+			block.header.set_transactions_root(transactions_root);
+			block.transactions = transactions;
 
 			parent_hash = block.hash();
 			parent_number = block_number;

ethcore/builtin/Cargo.toml

@@ -0,0 +1,22 @@
+[package]
+description = "ethereum vm builtin"
+name = "ethcore-builtin"
+version = "0.1.0"
+authors = ["Parity Technologies <admin@parity.io>"]
+edition = "2018"
+
+[dependencies]
+bn = { git = "https://github.com/paritytech/bn", default-features = false }
+ethereum-types = "0.6.0"
+ethjson = { path = "../../json" }
+ethkey = { path = "../../accounts/ethkey" }
+keccak-hash = "0.2.0"
+log = "0.4"
+num = { version = "0.1", default-features = false, features = ["bigint"] }
+parity-bytes = "0.1"
+eip-152 = { path = "../../util/EIP-152" }
+parity-crypto = "0.4.0"
+byteorder = "1.3.2"
+
+[dev-dependencies]
+hex-literal = "0.2.1"

ethcore/evm/Cargo.toml

@@ -19,6 +19,7 @@ memory-cache = { path = "../../util/memory-cache" }
 [dev-dependencies]
 rustc-hex = "1.0"
 criterion = "0.2"
+hex-literal = "0.2.0"
 
 [features]
 evm-debug = []

ethcore/evm/src/factory.rs

@@ -47,7 +47,7 @@ impl Factory {
 	/// for caching jump destinations.
 	pub fn new(evm: VMType, cache_size: usize) -> Self {
 		Factory {
-			evm: evm,
+			evm,
 			evm_cache: Arc::new(SharedCache::new(cache_size)),
 		}
 	}

ethcore/evm/src/instructions.rs

@@ -149,6 +149,8 @@ enum_with_from_u8! {
 		DIFFICULTY = 0x44,
 		#[doc = "get the block's gas limit"]
 		GASLIMIT = 0x45,
+		#[doc = "get chain ID"]
+		CHAINID = 0x46,
 
 		#[doc = "remove item from stack"]
 		POP = 0x50,
@@ -442,12 +444,7 @@ pub struct InstructionInfo {
 impl InstructionInfo {
 	/// Create new instruction info.
 	pub fn new(name: &'static str, args: usize, ret: usize, tier: GasPriceTier) -> Self {
-		InstructionInfo {
-			name: name,
-			args: args,
-			ret: ret,
-			tier: tier
-		}
+		InstructionInfo { name, args, ret, tier }
 	}
 }
 
@@ -504,6 +501,7 @@ lazy_static! {
 		arr[NUMBER as usize] = Some(InstructionInfo::new("NUMBER", 0, 1, GasPriceTier::Base));
 		arr[DIFFICULTY as usize] = Some(InstructionInfo::new("DIFFICULTY", 0, 1, GasPriceTier::Base));
 		arr[GASLIMIT as usize] = Some(InstructionInfo::new("GASLIMIT", 0, 1, GasPriceTier::Base));
+		arr[CHAINID as usize] = Some(InstructionInfo::new("CHAINID", 0, 1, GasPriceTier::Base));
 		arr[POP as usize] = Some(InstructionInfo::new("POP", 1, 0, GasPriceTier::Base));
 		arr[MLOAD as usize] = Some(InstructionInfo::new("MLOAD", 1, 1, GasPriceTier::VeryLow));
 		arr[MSTORE as usize] = Some(InstructionInfo::new("MSTORE", 2, 0, GasPriceTier::VeryLow));

ethcore/evm/src/interpreter/mod.rs

@@ -276,6 +276,8 @@ impl<Cost: CostType> Interpreter<Cost> {
 			cache, params, reader, informant,
 			valid_jump_destinations, gasometer, stack,
 			done: false,
+			// Overridden in `step_inner` based on
+			// the result of `ext.trace_next_instruction`.
 			do_trace: true,
 			mem: Vec::new(),
 			return_data: ReturnData::empty(),
@@ -345,6 +347,9 @@ impl<Cost: CostType> Interpreter<Cost> {
 					ext.trace_prepare_execute(self.reader.position - 1, opcode, requirements.gas_cost.as_u256(), Self::mem_written(instruction, &self.stack), Self::store_written(instruction, &self.stack));
 				}
 				if let Err(e) = self.gasometer.as_mut().expect(GASOMETER_PROOF).verify_gas(&requirements.gas_cost) {
+					if self.do_trace {
+						ext.trace_failed();
+					}
 					return InterpreterResult::Done(Err(e));
 				}
 				self.mem.expand(requirements.memory_required_size);
@@ -358,7 +363,12 @@ impl<Cost: CostType> Interpreter<Cost> {
 				let result = match self.exec_instruction(
 					current_gas, ext, instruction, requirements.provide_gas
 				) {
-					Err(x) => return InterpreterResult::Done(Err(x)),
+					Err(x) => {
+						if self.do_trace {
+							ext.trace_failed();
+						}
+						return InterpreterResult::Done(Err(x));
+					},
 					Ok(x) => x,
 				};
 				evm_debug!({ self.informant.after_instruction(instruction) });
@@ -425,7 +435,8 @@ impl<Cost: CostType> Interpreter<Cost> {
 			((instruction == instructions::RETURNDATACOPY || instruction == instructions::RETURNDATASIZE) && !schedule.have_return_data) ||
 			(instruction == instructions::REVERT && !schedule.have_revert) ||
 			((instruction == instructions::SHL || instruction == instructions::SHR || instruction == instructions::SAR) && !schedule.have_bitwise_shifting) ||
-			(instruction == instructions::EXTCODEHASH && !schedule.have_extcodehash)
+			(instruction == instructions::EXTCODEHASH && !schedule.have_extcodehash) ||
+			(instruction == instructions::CHAINID && !schedule.have_chain_id)
 		{
 			return Err(vm::Error::BadInstruction {
 				instruction: instruction as u8
@@ -840,6 +851,9 @@ impl<Cost: CostType> Interpreter<Cost> {
 			instructions::GASLIMIT => {
 				self.stack.push(ext.env_info().gas_limit.clone());
 			},
+			instructions::CHAINID => {
+				self.stack.push(ext.chain_id().into())
+			},
 
 			// Stack instructions
 

ethcore/evm/src/lib.rs

@@ -33,6 +33,8 @@ extern crate log;
 
 #[cfg(test)]
 extern crate rustc_hex;
+#[cfg(test)]
+extern crate hex_literal;
 
 pub mod evm;
 pub mod interpreter;

ethcore/evm/src/tests.rs

@@ -25,6 +25,7 @@ use vm::{self, ActionParams, ActionValue, Ext};
 use vm::tests::{FakeExt, FakeCall, FakeCallType, test_finalize};
 use factory::Factory;
 use vmtype::VMType;
+use hex_literal::hex;
 
 evm_test!{test_add: test_add_int}
 fn test_add(factory: super::Factory) {
@@ -130,6 +131,27 @@ fn test_sender(factory: super::Factory) {
 	assert_store(&ext, 0, "000000000000000000000000cd1722f2947def4cf144679da39c4c32bdc35681");
 }
 
+evm_test!{test_chain_id: test_chain_id_int}
+fn test_chain_id(factory: super::Factory) {
+	// 46       CHAINID
+	// 60 00    PUSH 0
+	// 55       SSTORE
+	let code = hex!("46 60 00 55").to_vec();
+
+	let mut params = ActionParams::default();
+	params.gas = U256::from(100_000);
+	params.code = Some(Arc::new(code));
+	let mut ext = FakeExt::new_istanbul().with_chain_id(9);
+
+	let gas_left = {
+		let vm = factory.create(params, ext.schedule(), ext.depth());
+		test_finalize(vm.exec(&mut ext).ok().unwrap()).unwrap()
+	};
+
+	assert_eq!(gas_left, U256::from(79_995));
+	assert_store(&ext, 0, "0000000000000000000000000000000000000000000000000000000000000009");
+}
+
 evm_test!{test_extcodecopy: test_extcodecopy_int}
 fn test_extcodecopy(factory: super::Factory) {
 		// 33 - sender
@@ -262,7 +284,6 @@ fn test_calldataload(factory: super::Factory) {
 
 	assert_eq!(gas_left, U256::from(79_991));
 	assert_store(&ext, 0, "23ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff23");
-
 }
 
 evm_test!{test_author: test_author_int}

ethcore/private-tx/Cargo.toml

@@ -37,7 +37,7 @@ serde_derive = "1.0"
 serde_json = "1.0"
 time-utils = { path = "../../util/time-utils" }
 tiny-keccak = "1.4"
-transaction-pool = "2.0"
+transaction-pool = "2.0.1"
 url = "1"
 
 [dev-dependencies]

ethcore/private-tx/src/lib.rs

@@ -285,7 +285,7 @@ impl Provider {
 		let mut state_buf = [0u8; 64];
 		state_buf[..32].clone_from_slice(state_hash.as_bytes());
 		state_buf[32..].clone_from_slice(nonce_h256.as_bytes());
-		keccak(&state_buf.as_ref())
+		keccak(AsRef::<[u8]>::as_ref(&state_buf[..]))
 	}
 
 	fn pool_client<'a>(&'a self, nonce_cache: &'a NonceCache, local_accounts: &'a HashSet<Address>) -> miner::pool_client::PoolClient<'a, Client> {

ethcore/res/authority_round.json

@@ -46,9 +46,50 @@
 		"0000000000000000000000000000000000000003": { "balance": "1", "nonce": "1048576", "builtin": { "name": "ripemd160", "pricing": { "linear": { "base": 600, "word": 120 } } } },
 		"0000000000000000000000000000000000000004": { "balance": "1", "nonce": "1048576", "builtin": { "name": "identity", "pricing": { "linear": { "base": 15, "word": 3 } } } },
 		"0000000000000000000000000000000000000005": { "balance": "1", "builtin": { "name": "modexp", "activate_at": 0, "pricing": { "modexp": { "divisor": 20 } } } },
-		"0000000000000000000000000000000000000006": { "balance": "1", "builtin": { "name": "alt_bn128_add", "activate_at": 0, "pricing": { "linear": { "base": 500, "word": 0 } } } },
-		"0000000000000000000000000000000000000007": { "balance": "1", "builtin": { "name": "alt_bn128_mul", "activate_at": 0, "pricing": { "linear": { "base": 40000, "word": 0 } } } },
-		"0000000000000000000000000000000000000008": { "balance": "1", "builtin": { "name": "alt_bn128_pairing", "activate_at": 0, "pricing": { "alt_bn128_pairing": { "base": 100000, "pair": 80000 } } } },
+		"0000000000000000000000000000000000000006": {
+			"balance": "1",
+			"builtin": {
+				"name": "alt_bn128_add",
+				"activate_at": 0,
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 500,
+						"eip1108_transition_price": 150
+					}
+				}
+			}
+		},
+		"0000000000000000000000000000000000000007": {
+			"balance": "1",
+			"builtin": {
+				"name": "alt_bn128_mul",
+				"activate_at": 0,
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 40000,
+						"eip1108_transition_price": 6000
+					}
+				}
+			}
+		},
+		"0000000000000000000000000000000000000008": {
+			"balance": "1",
+			"builtin": {
+				"name": "alt_bn128_pairing",
+				"activate_at": 0,
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_pairing": {
+						"base": 100000,
+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
+					}
+				}
+			}
+		},
 		"9cce34f7ab185c7aba1b7c8140d620b4bda941d6": { "balance": "1606938044258990275541962092341162602522202993782792835301376", "nonce": "1048576" }
 	}
 }

ethcore/res/authority_round_block_reward_contract.json

@@ -49,9 +49,50 @@
 		"0000000000000000000000000000000000000003": { "balance": "1", "nonce": "1048576", "builtin": { "name": "ripemd160", "pricing": { "linear": { "base": 600, "word": 120 } } } },
 		"0000000000000000000000000000000000000004": { "balance": "1", "nonce": "1048576", "builtin": { "name": "identity", "pricing": { "linear": { "base": 15, "word": 3 } } } },
 		"0000000000000000000000000000000000000005": { "balance": "1", "builtin": { "name": "modexp", "activate_at": 0, "pricing": { "modexp": { "divisor": 20 } } } },
-		"0000000000000000000000000000000000000006": { "balance": "1", "builtin": { "name": "alt_bn128_add", "activate_at": 0, "pricing": { "linear": { "base": 500, "word": 0 } } } },
-		"0000000000000000000000000000000000000007": { "balance": "1", "builtin": { "name": "alt_bn128_mul", "activate_at": 0, "pricing": { "linear": { "base": 40000, "word": 0 } } } },
-		"0000000000000000000000000000000000000008": { "balance": "1", "builtin": { "name": "alt_bn128_pairing", "activate_at": 0, "pricing": { "alt_bn128_pairing": { "base": 100000, "pair": 80000 } } } },
+		"0000000000000000000000000000000000000006": {
+			"balance": "1",
+			"builtin": {
+				"name": "alt_bn128_add",
+				"activate_at": 0,
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
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+						"eip1108_transition_price": 150
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+		"0000000000000000000000000000000000000007": {
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+				"pricing": {
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+				"pricing": {
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 		"9cce34f7ab185c7aba1b7c8140d620b4bda941d6": { "balance": "1606938044258990275541962092341162602522202993782792835301376", "nonce": "1048576" },
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ethcore/res/basic_authority.json

@@ -38,9 +38,50 @@
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 		"0000000000000000000000000000000000000005": { "balance": "1", "builtin": { "name": "modexp", "activate_at": 0, "pricing": { "modexp": { "divisor": 20 } } } },
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-		"0000000000000000000000000000000000000008": { "balance": "1", "builtin": { "name": "alt_bn128_pairing", "activate_at": 0, "pricing": { "alt_bn128_pairing": { "base": 100000, "pair": 80000 } } } },
+		"0000000000000000000000000000000000000006": {
+			"balance": "1",
+			"builtin": {
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+				"activate_at": "0x0",
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
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+						"eip1108_transition_price": 150
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+			}
+		},
+		"0000000000000000000000000000000000000007": {
+			"balance": "1",
+			"builtin": {
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+				"activate_at": "0x0",
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
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+		"0000000000000000000000000000000000000008": {
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+			"builtin": {
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+				"activate_at": "0x0",
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_pairing": {
+						"base": 100000,
+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
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 		"9cce34f7ab185c7aba1b7c8140d620b4bda941d6": { "balance": "1606938044258990275541962092341162602522202993782792835301376", "nonce": "1048576" }
 	}
 }

ethcore/res/constructor.json

@@ -34,9 +34,50 @@
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 		"0000000000000000000000000000000000000004": { "balance": "1", "builtin": { "name": "identity", "pricing": { "linear": { "base": 15, "word": 3 } } } },
 		"0000000000000000000000000000000000000005": { "balance": "1", "builtin": { "name": "modexp", "activate_at": 0, "pricing": { "modexp": { "divisor": 20 } } } },
-		"0000000000000000000000000000000000000006": { "balance": "1", "builtin": { "name": "alt_bn128_add", "activate_at": 0, "pricing": { "linear": { "base": 500, "word": 0 } } } },
-		"0000000000000000000000000000000000000007": { "balance": "1", "builtin": { "name": "alt_bn128_mul", "activate_at": 0, "pricing": { "linear": { "base": 40000, "word": 0 } } } },
-		"0000000000000000000000000000000000000008": { "balance": "1", "builtin": { "name": "alt_bn128_pairing", "activate_at": 0, "pricing": { "alt_bn128_pairing": { "base": 100000, "pair": 80000 } } } },
+		"0000000000000000000000000000000000000006": {
+			"balance": "1",
+			"builtin": {
+				"name": "alt_bn128_add",
+				"activate_at": 0,
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 500,
+						"eip1108_transition_price": 150
+					}
+				}
+			}
+		},
+		"0000000000000000000000000000000000000007": {
+			"balance": "1",
+			"builtin": {
+				"name": "alt_bn128_mul",
+				"activate_at": 0,
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 40000,
+						"eip1108_transition_price": 6000
+					}
+				}
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+		},
+		"0000000000000000000000000000000000000008": {
+			"balance": "1",
+			"builtin": {
+				"name": "alt_bn128_pairing",
+				"activate_at": 0,
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_pairing": {
+						"base": 100000,
+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
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 		"0000000000000000000000000000000000001337": { "balance": "1", "constructor": "60606040526000805460ff19166001179055346000575b6075806100246000396000f300606060405263ffffffff60e060020a60003504166394b91deb81146022575b6000565b34600057602c6040565b604080519115158252519081900360200190f35b60005460ff16815600a165627a7a723058207882eb60ebce23178b3fa06d4cd8e5adc17711937ccddacb18a04abca2a2c9ee0029" }
 	}
 }

ethcore/res/ethereum/byzantium_test.json

@@ -54,8 +54,46 @@
 		"0000000000000000000000000000000000000003": { "balance": "1", "builtin": { "name": "ripemd160", "pricing": { "linear": { "base": 600, "word": 120 } } } },
 		"0000000000000000000000000000000000000004": { "balance": "1", "builtin": { "name": "identity", "pricing": { "linear": { "base": 15, "word": 3 } } } },
 		"0000000000000000000000000000000000000005": { "builtin": { "name": "modexp", "activate_at": "0x00", "pricing": { "modexp": { "divisor": 20 } } } },
-		"0000000000000000000000000000000000000006": { "builtin": { "name": "alt_bn128_add", "activate_at": "0x00", "pricing": { "linear": { "base": 500, "word": 0 } } } },
-		"0000000000000000000000000000000000000007": { "builtin": { "name": "alt_bn128_mul", "activate_at": "0x00", "pricing": { "linear": { "base": 40000, "word": 0 } } } },
-		"0000000000000000000000000000000000000008": { "builtin": { "name": "alt_bn128_pairing", "activate_at": "0x00", "pricing": { "alt_bn128_pairing": { "base": 100000, "pair": 80000 } } } }
+		"0000000000000000000000000000000000000006": {
+			"builtin": {
+				"name": "alt_bn128_add",
+				"activate_at": "0x00",
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 500,
+						"eip1108_transition_price": 150
+					}
+				}
+			}
+		},
+		"0000000000000000000000000000000000000007": {
+			"builtin": {
+				"name": "alt_bn128_mul",
+				"activate_at": "0x00",
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 40000,
+						"eip1108_transition_price": 6000
+					}
+				}
+			}
+		},
+		"0000000000000000000000000000000000000008": {
+			"builtin": {
+				"name": "alt_bn128_pairing",
+				"activate_at": "0x00",
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_pairing": {
+						"base": 100000,
+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
+					}
+				}
+			}
+		}
 	}
 }

ethcore/res/ethereum/callisto.json

@@ -72,9 +72,50 @@
 		"0000000000000000000000000000000000000003": { "balance": "1", "builtin": { "name": "ripemd160", "pricing": { "linear": { "base": 600, "word": 120 } } } },
 		"0000000000000000000000000000000000000004": { "balance": "1", "builtin": { "name": "identity", "pricing": { "linear": { "base": 15, "word": 3 } } } },
 		"0000000000000000000000000000000000000005": { "balance": "1", "builtin": { "name": "modexp", "activate_at": 20, "pricing": { "modexp": { "divisor": 20 } } } },
-		"0000000000000000000000000000000000000006": { "balance": "1", "builtin": { "name": "alt_bn128_add", "activate_at": 20, "pricing": { "linear": { "base": 500, "word": 0 } } } },
-		"0000000000000000000000000000000000000007": { "balance": "1", "builtin": { "name": "alt_bn128_mul", "activate_at": 20, "pricing": { "linear": { "base": 40000, "word": 0 } } } },
-		"0000000000000000000000000000000000000008": { "balance": "1", "builtin": { "name": "alt_bn128_pairing", "activate_at": 20, "pricing": { "alt_bn128_pairing": { "base": 100000, "pair": 80000 } } } },
+		"0000000000000000000000000000000000000006": {
+			"balance": "1",
+			"builtin": {
+				"name": "alt_bn128_add",
+				"activate_at": 20,
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 500,
+						"eip1108_transition_price": 150
+					}
+				}
+			}
+		},
+		"0000000000000000000000000000000000000007": {
+			"balance": "1",
+			"builtin": {
+				"name": "alt_bn128_mul",
+				"activate_at": 20,
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 40000,
+						"eip1108_transition_price": 6000
+					}
+				}
+			}
+		},
+		"0000000000000000000000000000000000000008": {
+			"balance": "1",
+			"builtin": {
+				"name": "alt_bn128_pairing",
+				"activate_at": 20,
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_pairing": {
+						"base": 100000,
+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
+					}
+				}
+			}
+		},
 		"183394f52b2c8c034835edba3bcececa6f60b5a8": {
 			"balance": "100491852286952719463755404"
 		}

ethcore/res/ethereum/classic.json

@@ -3917,10 +3917,11 @@
 			"builtin": {
 				"name": "alt_bn128_add",
 				"activate_at": "0x85d9a0",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
-					"linear": {
-						"base": 500,
-						"word": 0
+					"alt_bn128_const_operations": {
+						"price": 500,
+						"eip1108_transition_price": 150
 					}
 				}
 			}
@@ -3929,10 +3930,11 @@
 			"builtin": {
 				"name": "alt_bn128_mul",
 				"activate_at": "0x85d9a0",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
-					"linear": {
-						"base": 40000,
-						"word": 0
+					"alt_bn128_const_operations": {
+						"price": 40000,
+						"eip1108_transition_price": 6000
 					}
 				}
 			}
@@ -3941,10 +3943,13 @@
 			"builtin": {
 				"name": "alt_bn128_pairing",
 				"activate_at": "0x85d9a0",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
 					"alt_bn128_pairing": {
 						"base": 100000,
-						"pair": 80000
+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
 					}
 				}
 			}

ethcore/res/ethereum/constantinople_test.json

@@ -58,8 +58,46 @@
 		"0000000000000000000000000000000000000003": { "balance": "1", "builtin": { "name": "ripemd160", "pricing": { "linear": { "base": 600, "word": 120 } } } },
 		"0000000000000000000000000000000000000004": { "balance": "1", "builtin": { "name": "identity", "pricing": { "linear": { "base": 15, "word": 3 } } } },
 		"0000000000000000000000000000000000000005": { "builtin": { "name": "modexp", "activate_at": "0x00", "pricing": { "modexp": { "divisor": 20 } } } },
-		"0000000000000000000000000000000000000006": { "builtin": { "name": "alt_bn128_add", "activate_at": "0x00", "pricing": { "linear": { "base": 500, "word": 0 } } } },
-		"0000000000000000000000000000000000000007": { "builtin": { "name": "alt_bn128_mul", "activate_at": "0x00", "pricing": { "linear": { "base": 40000, "word": 0 } } } },
-		"0000000000000000000000000000000000000008": { "builtin": { "name": "alt_bn128_pairing", "activate_at": "0x00", "pricing": { "alt_bn128_pairing": { "base": 100000, "pair": 80000 } } } }
+		"0000000000000000000000000000000000000006": {
+			"builtin": {
+				"name": "alt_bn128_add",
+				"activate_at": "0x00",
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 500,
+						"eip1108_transition_price": 150
+					}
+				}
+			}
+		},
+		"0000000000000000000000000000000000000007": {
+			"builtin": {
+				"name": "alt_bn128_mul",
+				"activate_at": "0x00",
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 40000,
+						"eip1108_transition_price": 6000
+					}
+				}
+			}
+		},
+		"0000000000000000000000000000000000000008": {
+			"builtin": {
+				"name": "alt_bn128_pairing",
+				"activate_at": "0x00",
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_pairing": {
+						"base": 100000,
+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
+					}
+				}
+			}
+		}
 	}
 }

ethcore/res/ethereum/eip210_test.json

@@ -46,8 +46,46 @@
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 		"0000000000000000000000000000000000000004": { "balance": "1", "builtin": { "name": "identity", "pricing": { "linear": { "base": 15, "word": 3 } } } },
 		"0000000000000000000000000000000000000005": { "builtin": { "name": "modexp", "activate_at": "0x00", "pricing": { "modexp": { "divisor": 100 } } } },
-		"0000000000000000000000000000000000000006": { "builtin": { "name": "alt_bn128_add", "activate_at": "0x00", "pricing": { "linear": { "base": 500, "word": 0 } } } },
-		"0000000000000000000000000000000000000007": { "builtin": { "name": "alt_bn128_mul", "activate_at": "0x00", "pricing": { "linear": { "base": 2000, "word": 0 } } } },
-		"0000000000000000000000000000000000000008": { "builtin": { "name": "alt_bn128_pairing", "activate_at": "0x00", "pricing": { "alt_bn128_pairing": { "base": 100000, "pair": 80000 } } } }
+		"0000000000000000000000000000000000000006": {
+			"builtin": {
+				"name": "alt_bn128_add",
+				"activate_at": "0x00",
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 500,
+						"eip1108_transition_price": 150
+					}
+				}
+			}
+		},
+		"0000000000000000000000000000000000000007": {
+			"builtin": {
+				"name": "alt_bn128_mul",
+				"activate_at": "0x00",
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 40000,
+						"eip1108_transition_price": 6000
+					}
+				}
+			}
+		},
+		"0000000000000000000000000000000000000008": {
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+				"name": "alt_bn128_pairing",
+				"activate_at": "0x00",
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_pairing": {
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+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
+					}
+				}
+			}
+		}
 	}
 }

ethcore/res/ethereum/ellaism.json

@@ -66,8 +66,46 @@
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 		"0000000000000000000000000000000000000004": { "builtin": { "name": "identity", "pricing": { "linear": { "base": 15, "word": 3 } } } },
 		"0000000000000000000000000000000000000005": { "builtin": { "name": "modexp", "activate_at": 2000000, "pricing": { "modexp": { "divisor": 20 } } } },
-		"0000000000000000000000000000000000000006": { "builtin": { "name": "alt_bn128_add", "activate_at": 2000000, "pricing": { "linear": { "base": 500, "word": 0 } } } },
-		"0000000000000000000000000000000000000007": { "builtin": { "name": "alt_bn128_mul", "activate_at": 2000000, "pricing": { "linear": { "base": 40000, "word": 0 } } } },
-		"0000000000000000000000000000000000000008": { "builtin": { "name": "alt_bn128_pairing", "activate_at": 2000000, "pricing": { "alt_bn128_pairing": { "base": 100000, "pair": 80000 } } } }
+		"0000000000000000000000000000000000000006": {
+			"builtin": {
+				"name": "alt_bn128_add",
+				"activate_at": 2000000,
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 500,
+						"eip1108_transition_price": 150
+					}
+				}
+			}
+		},
+		"0000000000000000000000000000000000000007": {
+			"builtin": {
+				"name": "alt_bn128_mul",
+				"activate_at": 2000000,
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 40000,
+						"eip1108_transition_price": 6000
+					}
+				}
+			}
+		},
+		"0000000000000000000000000000000000000008": {
+			"builtin": {
+				"name": "alt_bn128_pairing",
+				"activate_at": 2000000,
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_pairing": {
+						"base": 100000,
+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
+					}
+				}
+			}
+		}
 	}
 }

ethcore/res/ethereum/ewc.json

@@ -109,11 +109,12 @@
             "builtin": {
                 "name": "alt_bn128_add",
                 "activate_at": "0",
+                "eip1108_transition": "0x7fffffffffffff",
                 "pricing": {
-                    "linear": {
-                        "base": 500,
-                        "word": 0
-                    }
+                   "alt_bn128_const_operations": {
+                      "price": 500,
+                      "eip1108_transition_price": 150
+                   }
                 }
             }
         },
@@ -122,10 +123,11 @@
             "builtin": {
                 "name": "alt_bn128_mul",
                 "activate_at": "0",
+                "eip1108_transition": "0x7fffffffffffff",
                 "pricing": {
-                    "linear": {
-                        "base": 40000,
-                        "word": 0
+                    "alt_bn128_const_operations": {
+                        "price": 40000,
+                        "eip1108_transition_price": 6000
                     }
                 }
             }
@@ -135,12 +137,15 @@
             "builtin": {
                 "name": "alt_bn128_pairing",
                 "activate_at": "0",
+                "eip1108_transition": "0x7fffffffffffff",
                 "pricing": {
                     "alt_bn128_pairing": {
                         "base": 100000,
-                        "pair": 80000
+                        "pair": 80000,
+                        "eip1108_transition_base": 45000,
+                        "eip1108_transition_pair": 34000
                     }
-                }
+               }
             }
         },
         "0x1204700000000000000000000000000000000005": {

ethcore/res/ethereum/expanse.json

@@ -76,9 +76,47 @@
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 		"0000000000000000000000000000000000000004": { "builtin": { "name": "identity", "pricing": { "linear": { "base": 15, "word": 3 } } } },
 		"0000000000000000000000000000000000000005": { "builtin": { "name": "modexp", "activate_at": "0xC3500", "pricing": { "modexp": { "divisor": 20 } } } },
-		"0000000000000000000000000000000000000006": { "builtin": { "name": "alt_bn128_add", "activate_at": "0xC3500", "pricing": { "linear": { "base": 500, "word": 0 } } } },
-		"0000000000000000000000000000000000000007": { "builtin": { "name": "alt_bn128_mul", "activate_at": "0xC3500", "pricing": { "linear": { "base": 40000, "word": 0 } } } },
-		"0000000000000000000000000000000000000008": { "builtin": { "name": "alt_bn128_pairing", "activate_at": "0xC3500", "pricing": { "alt_bn128_pairing": { "base": 100000, "pair": 80000 } } } },
+		"0000000000000000000000000000000000000006": {
+			"builtin": {
+				"name": "alt_bn128_add",
+				"activate_at": "0xC3500",
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 500,
+						"eip1108_transition_price": 150
+					}
+				}
+			}
+		},
+		"0000000000000000000000000000000000000007": {
+			"builtin": {
+				"name": "alt_bn128_mul",
+				"activate_at": "0xC3500",
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 40000,
+						"eip1108_transition_price": 6000
+					}
+				}
+			}
+		},
+		"0000000000000000000000000000000000000008": {
+			"builtin": {
+				"name": "alt_bn128_pairing",
+				"activate_at": "0xC3500",
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_pairing": {
+						"base": 100000,
+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
+					}
+				}
+			}
+		},
 		"bb94f0ceb32257275b2a7a9c094c13e469b4563e": {
 			"balance": "10000000000000000000000000"
 		},

ethcore/res/ethereum/foundation.json

@@ -3921,10 +3921,11 @@
 			"builtin": {
 				"name": "alt_bn128_add",
 				"activate_at": "0x42ae50",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
-					"linear": {
-						"base": 500,
-						"word": 0
+					"alt_bn128_const_operations": {
+						"price": 500,
+						"eip1108_transition_price": 150
 					}
 				}
 			}
@@ -3933,10 +3934,11 @@
 			"builtin": {
 				"name": "alt_bn128_mul",
 				"activate_at": "0x42ae50",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
-					"linear": {
-						"base": 40000,
-						"word": 0
+					"alt_bn128_const_operations": {
+						"price": 40000,
+						"eip1108_transition_price": 6000
 					}
 				}
 			}
@@ -3945,10 +3947,13 @@
 			"builtin": {
 				"name": "alt_bn128_pairing",
 				"activate_at": "0x42ae50",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
 					"alt_bn128_pairing": {
 						"base": 100000,
-						"pair": 80000
+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
 					}
 				}
 			}

ethcore/res/ethereum/goerli.json

@@ -125,11 +125,12 @@
 			"balance": "0x1",
 			"builtin": {
 				"name": "alt_bn128_add",
-				"activate_at": "0x0",
+				"activate_at": "0x00",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
-					"linear": {
-						"base": 500,
-						"word": 0
+					"alt_bn128_const_operations": {
+						"price": 500,
+						"eip1108_transition_price": 150
 					}
 				}
 			}
@@ -138,11 +139,12 @@
 			"balance": "0x1",
 			"builtin": {
 				"name": "alt_bn128_mul",
-				"activate_at": "0x0",
+				"activate_at": "0x00",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
-					"linear": {
-						"base": 40000,
-						"word": 0
+					"alt_bn128_const_operations": {
+						"price": 40000,
+						"eip1108_transition_price": 6000
 					}
 				}
 			}
@@ -151,11 +153,14 @@
 			"balance": "0x1",
 			"builtin": {
 				"name": "alt_bn128_pairing",
-				"activate_at": "0x0",
+				"activate_at": "0x00",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
 					"alt_bn128_pairing": {
 						"base": 100000,
-						"pair": 80000
+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
 					}
 				}
 			}

ethcore/res/ethereum/kotti.json

@@ -117,10 +117,11 @@
 			"builtin": {
 				"name": "alt_bn128_add",
 				"activate_at": "0xaef49",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
-					"linear": {
-						"base": 500,
-						"word": 0
+					"alt_bn128_const_operations": {
+						"price": 500,
+						"eip1108_transition_price": 150
 					}
 				}
 			}
@@ -130,10 +131,11 @@
 			"builtin": {
 				"name": "alt_bn128_mul",
 				"activate_at": "0xaef49",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
-					"linear": {
-						"base": 40000,
-						"word": 0
+					"alt_bn128_const_operations": {
+						"price": 40000,
+						"eip1108_transition_price": 6000
 					}
 				}
 			}
@@ -143,10 +145,13 @@
 			"builtin": {
 				"name": "alt_bn128_pairing",
 				"activate_at": "0xaef49",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
 					"alt_bn128_pairing": {
 						"base": 100000,
-						"pair": 80000
+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
 					}
 				}
 			}

ethcore/res/ethereum/kovan.json

@@ -5344,10 +5344,11 @@
 			"builtin": {
 				"name": "alt_bn128_add",
 				"activate_at": "0x4d50f8",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
-					"linear": {
-						"base": 500,
-						"word": 0
+					"alt_bn128_const_operations": {
+						"price": 500,
+						"eip1108_transition_price": 150
 					}
 				}
 			}
@@ -5356,10 +5357,11 @@
 			"builtin": {
 				"name": "alt_bn128_mul",
 				"activate_at": "0x4d50f8",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
-					"linear": {
-						"base": 40000,
-						"word": 0
+					"alt_bn128_const_operations": {
+						"price": 40000,
+						"eip1108_transition_price": 6000
 					}
 				}
 			}
@@ -5368,10 +5370,13 @@
 			"builtin": {
 				"name": "alt_bn128_pairing",
 				"activate_at": "0x4d50f8",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
 					"alt_bn128_pairing": {
 						"base": 100000,
-						"pair": 80000
+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
 					}
 				}
 			}
@@ -5382,6 +5387,8 @@
 	},
 	"nodes": [
 		"enode://f6e37b943bad3a78cb8589b1798d30d210ffd39cfcd2c8f2de4f098467fd49c667980100d919da7ca46cd50505d30989abda87f0b9339377de13d6592c22caf8@34.198.49.72:30303",
+		"enode://16898006ba2cd4fa8bf9a3dfe32684c178fa861df144bfc21fe800dc4838a03e342056951fa9fd533dcb0be1219e306106442ff2cf1f7e9f8faa5f2fc1a3aa45@116.203.116.241:30303",
+		"enode://2909846f78c37510cc0e306f185323b83bb2209e5ff4fdd279d93c60e3f365e3c6e62ad1d2133ff11f9fd6d23ad9c3dad73bb974d53a22f7d1ac5b7dea79d0b0@3.217.96.11:30303",
 		"enode://56abaf065581a5985b8c5f4f88bd202526482761ba10be9bfdcd14846dd01f652ec33fde0f8c0fd1db19b59a4c04465681fcef50e11380ca88d25996191c52de@40.71.221.215:30303",
 		"enode://d07827483dc47b368eaf88454fb04b41b7452cf454e194e2bd4c14f98a3278fed5d819dbecd0d010407fc7688d941ee1e58d4f9c6354d3da3be92f55c17d7ce3@52.166.117.77:30303",
 		"enode://38e6e7fd416293ed120d567a2675fe078c0205ab0671abf16982ce969823bd1f3443d590c18b321dfae7dcbe1f6ba98ef8702f255c3c9822a188abb82c53adca@51.77.66.187:30303",

ethcore/res/ethereum/kovan_wasm_test.json

@@ -60,9 +60,47 @@
 		"0x0000000000000000000000000000000000000003": { "balance": "1", "builtin": { "name": "ripemd160", "pricing": { "linear": { "base": 600, "word": 120 } } } },
 		"0x0000000000000000000000000000000000000004": { "balance": "1", "builtin": { "name": "identity", "pricing": { "linear": { "base": 15, "word": 3 } } } },
 		"0x0000000000000000000000000000000000000005": { "builtin": { "name": "modexp", "activate_at": 5067000, "pricing": { "modexp": { "divisor": 20 } } } },
-		"0x0000000000000000000000000000000000000006": { "builtin": { "name": "alt_bn128_add", "activate_at": 5067000, "pricing": { "linear": { "base": 500, "word": 0 } } } },
-		"0x0000000000000000000000000000000000000007": { "builtin": { "name": "alt_bn128_mul", "activate_at": 5067000, "pricing": { "linear": { "base": 40000, "word": 0 } } } },
-		"0x0000000000000000000000000000000000000008": { "builtin": { "name": "alt_bn128_pairing", "activate_at": 5067000, "pricing": { "alt_bn128_pairing": { "base": 100000, "pair": 80000 } } } },
+		"0x0000000000000000000000000000000000000006": {
+			"builtin": {
+				"name": "alt_bn128_add",
+				"activate_at": 5067000,
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 500,
+						"eip1108_transition_price": 150
+					}
+				}
+			}
+		},
+		"0x0000000000000000000000000000000000000007": {
+			"builtin": {
+				"name": "alt_bn128_mul",
+				"activate_at": 5067000,
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 40000,
+						"eip1108_transition_price": 6000
+					}
+				}
+			}
+		},
+		"0x0000000000000000000000000000000000000008": {
+			"builtin": {
+				"name": "alt_bn128_pairing",
+				"activate_at": 5067000,
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_pairing": {
+						"base": 100000,
+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
+					}
+				}
+			}
+		},
 		"0x00521965e7bd230323c423d96c657db5b79d099f": { "balance": "1606938044258990275541962092341162602522202993782792835301376" }
 	},
 	"nodes": [

ethcore/res/ethereum/mcip3_test.json

@@ -120,38 +120,43 @@
 				}
 			}
 		},
-		"0000000000000000000000000000000000000006":{
-			"builtin":{
-				"name":"alt_bn128_add",
+		"0000000000000000000000000000000000000006": {
+			"builtin": {
+				"name": "alt_bn128_add",
 				"activate_at":"0x7fffffffffffff",
-				"pricing":{
-					"linear":{
-						"base":500,
-						"word":0
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 500,
+						"eip1108_transition_price": 150
 					}
 				}
 			}
 		},
-		"0000000000000000000000000000000000000007":{
-			"builtin":{
-				"name":"alt_bn128_mul",
+		"0000000000000000000000000000000000000007": {
+			"builtin": {
+				"name": "alt_bn128_mul",
 				"activate_at":"0x7fffffffffffff",
-				"pricing":{
-					"linear":{
-						"base":40000,
-						"word":0
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 40000,
+						"eip1108_transition_price": 6000
 					}
 				}
 			}
 		},
-		"0000000000000000000000000000000000000008":{
-			"builtin":{
-				"name":"alt_bn128_pairing",
+		"0000000000000000000000000000000000000008": {
+			"builtin": {
+				"name": "alt_bn128_pairing",
 				"activate_at":"0x7fffffffffffff",
-				"pricing":{
-					"alt_bn128_pairing":{
-						"base":100000,
-						"pair":80000
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_pairing": {
+						"base": 100000,
+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
 					}
 				}
 			}

ethcore/res/ethereum/mix.json

@@ -62,9 +62,47 @@
 		"0000000000000000000000000000000000000003": { "builtin": { "name": "ripemd160", "pricing": { "linear": { "base": 600, "word": 120 } } } },
 		"0000000000000000000000000000000000000004": { "builtin": { "name": "identity", "pricing": { "linear": { "base": 15, "word": 3 } } } },
 		"0000000000000000000000000000000000000005": { "builtin": { "name": "modexp", "activate_at": 3000000, "pricing": { "modexp": { "divisor": 20 } } } },
-		"0000000000000000000000000000000000000006": { "builtin": { "name": "alt_bn128_add", "activate_at": 3000000, "pricing": { "linear": { "base": 500, "word": 0 } } } },
-		"0000000000000000000000000000000000000007": { "builtin": { "name": "alt_bn128_mul", "activate_at": 3000000, "pricing": { "linear": { "base": 40000, "word": 0 } } } },
-		"0000000000000000000000000000000000000008": { "builtin": { "name": "alt_bn128_pairing", "activate_at": 3000000, "pricing": { "alt_bn128_pairing": { "base": 100000, "pair": 80000 } } } },
+		"0000000000000000000000000000000000000006": {
+			"builtin": {
+				"name": "alt_bn128_add",
+				"activate_at": 3000000,
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 500,
+						"eip1108_transition_price": 150
+					}
+				}
+			}
+		},
+		"0000000000000000000000000000000000000007": {
+			"builtin": {
+				"name": "alt_bn128_mul",
+				"activate_at": 3000000,
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 40000,
+						"eip1108_transition_price": 6000
+					}
+				}
+			}
+		},
+		"0000000000000000000000000000000000000008": {
+			"builtin": {
+				"name": "alt_bn128_pairing",
+				"activate_at": 3000000,
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_pairing": {
+						"base": 100000,
+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
+					}
+				}
+			}
+		},
 		"97c7f4f8f0bbf384578a9f5754ae73f37ff49ec2": { "balance": "55000000000000000000000000" }
 	}
 }

ethcore/res/ethereum/morden.json

@@ -90,10 +90,11 @@
 			"builtin": {
 				"name": "alt_bn128_add",
 				"activate_at": "0x4829ba",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
-					"linear": {
-						"base": 500,
-						"word": 0
+					"alt_bn128_const_operations": {
+						"price": 500,
+						"eip1108_transition_price": 150
 					}
 				}
 			}
@@ -102,10 +103,11 @@
 			"builtin": {
 				"name": "alt_bn128_mul",
 				"activate_at": "0x4829ba",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
-					"linear": {
-						"base": 40000,
-						"word": 0
+					"alt_bn128_const_operations": {
+						"price": 40000,
+						"eip1108_transition_price": 6000
 					}
 				}
 			}
@@ -114,10 +116,13 @@
 			"builtin": {
 				"name": "alt_bn128_pairing",
 				"activate_at": "0x4829ba",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
 					"alt_bn128_pairing": {
 						"base": 100000,
-						"pair": 80000
+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
 					}
 				}
 			}

ethcore/res/ethereum/musicoin.json

@@ -128,38 +128,43 @@
 				}
 			}
 		},
-		"0000000000000000000000000000000000000006":{
-			"builtin":{
-				"name":"alt_bn128_add",
+		"0000000000000000000000000000000000000006": {
+			"builtin": {
+				"name": "alt_bn128_add",
 				"activate_at":"0x21e88e",
-				"pricing":{
-					"linear":{
-						"base":500,
-						"word":0
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 500,
+						"eip1108_transition_price": 150
 					}
 				}
 			}
 		},
-		"0000000000000000000000000000000000000007":{
-			"builtin":{
-				"name":"alt_bn128_mul",
+		"0000000000000000000000000000000000000007": {
+			"builtin": {
+				"name": "alt_bn128_mul",
 				"activate_at":"0x21e88e",
-				"pricing":{
-					"linear":{
-						"base":40000,
-						"word":0
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 40000,
+						"eip1108_transition_price": 6000
 					}
 				}
 			}
 		},
-		"0000000000000000000000000000000000000008":{
-			"builtin":{
-				"name":"alt_bn128_pairing",
+		"0000000000000000000000000000000000000008": {
+			"builtin": {
+				"name": "alt_bn128_pairing",
 				"activate_at":"0x21e88e",
-				"pricing":{
-					"alt_bn128_pairing":{
-						"base":100000,
-						"pair":80000
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_pairing": {
+						"base": 100000,
+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
 					}
 				}
 			}

ethcore/res/ethereum/poacore.json

@@ -51,7 +51,6 @@
 	},
 	"nodes": [
 		"enode://6e3d1b39cbd2a9c4f053a27e68fd90d0bac83691dfdc4a13c59f2555078a71e63c5daaee5a82aa6db500512760a5456f86076bf8bbe8011c27c82ed7d6f5fb26@45.77.140.210:30303",
-		"enode://f4698ad485a027497e1cc992bb5f7cecee2b32a44c47202738d8d0eecfab719541988d0cbcbc5ea94c6c959e5cddeb85fc6ae75fb63dc3bf87cdbe9e6f615e9d@206.156.242.64:30303",
 		"enode://31dffed97f8fed1f34fe66453280a89cbeeda60cf28f6fbb212ebbefd7c7566a02c1c7d5c00bbbb49b9fa8a49f157e0f786f379ca9bcbf2fea24de70d70a22b6@206.156.242.61:30303",
 		"enode://6bdc7553ab2e4914cb47774c1e6d8c8f47ac7c3981891f85f65d06f208ea1bc4d3bf982b330950e0a0cd127efd7145c4df7113159a1d4a06ed722e6c16d0ac6c@45.32.215.190:30303",
 		"enode://872d82a24144bc007658fb6fac0dcdfb9b63aeb05ef563a06d0186f2d1e5ffbfc5c4f1244891a8a86ef70682b9d24382e654b305224883698862e2df647a4d23@45.76.236.247:30303",
@@ -60,10 +59,47 @@
 	],
 	"accounts": {
 		"0000000000000000000000000000000000000005": { "builtin": { "name": "modexp", "activate_at": "0x0", "pricing": { "modexp": { "divisor": 20 } } } },
-		"0000000000000000000000000000000000000006": { "builtin": { "name": "alt_bn128_add", "activate_at": "0x0", "pricing": { "linear": { "base": 500, "word": 0 } } } },
-		"0000000000000000000000000000000000000007": { "builtin": { "name": "alt_bn128_mul", "activate_at": "0x0", "pricing": { "linear": { "base": 40000, "word": 0 } } } },
-		"0000000000000000000000000000000000000008": { "builtin": { "name": "alt_bn128_pairing", "activate_at": "0x0", "pricing": { "alt_bn128_pairing": { "base": 100000, "pair": 80000 } } } },
-
+		"0000000000000000000000000000000000000006": {
+			"builtin": {
+				"name": "alt_bn128_add",
+				"activate_at": "0x0",
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 500,
+						"eip1108_transition_price": 150
+					}
+				}
+			}
+		},
+		"0000000000000000000000000000000000000007": {
+			"builtin": {
+				"name": "alt_bn128_mul",
+				"activate_at": "0x0",
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 40000,
+						"eip1108_transition_price": 6000
+					}
+				}
+			}
+		},
+		"0000000000000000000000000000000000000008": {
+			"builtin": {
+				"name": "alt_bn128_pairing",
+				"activate_at": "0x0",
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_pairing": {
+						"base": 100000,
+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
+					}
+				}
+			}
+		},
 		"0x0000000000000000000000000000000000000001": {
 			"balance": "1",
 			"builtin": {

ethcore/res/ethereum/poasokol.json

@@ -58,16 +58,54 @@
 		"enode://8e0af07c86ec36590bb6368e7ad0c45b6dc658f5fb66ec68889a614affddda5e021bd513bcf4fb2fae4a3bbe08cf0de84f037cd58478a89665dfce1ded2595c7@34.236.37.74:30303",
 		"enode://f1a5100a81cb73163ae450c584d06b1f644aa4fad4486c6aeb4c384b343c54bb66c744aa5f133af66ea1b25f0f4a454f04878f3e96ee4cd2390c047396d6357b@209.97.158.4:30303",
 		"enode://0d1e0372f63a3f0b82d66635ea101ecc0f6797788a078805cc933dd93e6a22f7c9fa51ab4e2d21da02d04480ef19f3bbb9a2b41dd1c262085d295a354bb8b0f9@18.217.47.209:30303",
-		"enode://ab083db73da15b3995ac9c68035cdb32901835a823cb848fccb672e43dd21f14428706118d6fe5b921d8e741f122f35aad0255bc86807b1d17bcfa1e86e40a14@165.227.37.104:30303",
+		"enode://875e1bd1b98019a5d6d588c23f68534b75462dd6ecbb3dd058221dbf7aa923f0ab782ab93bb82d42edc9996f7f0816a318bdc761e55c02b95e1169cef66f7edc@159.203.24.35:30303",
 		"enode://8e0af07c86ec36590bb6368e7ad0c45b6dc658f5fb66ec68889a614affddda5e021bd513bcf4fb2fae4a3bbe08cf0de84f037cd58478a89665dfce1ded2595c7@34.236.37.74:30303",
 		"enode://182ee200ca134dc4d6390f3d5aadbcd80df0f7f24335830335d142573eacce4eeb919d30e82c5df588034e167e6ba6dd11187502ac9264a71005127f6b146a99@159.203.95.241:30303",
 		"enode://b022ff70b5fcaf9596ae5efed99a8198b4ae0578ee9d17b733609d803a75cef95d3a2a18e50dca9a7c3b26139f158c59eaf8b5fb8d1d331c9a46934a78acabe8@206.189.76.128:30303"
 	],
 	"accounts": {
 		"0000000000000000000000000000000000000005": { "builtin": { "name": "modexp", "activate_at": "0x0", "pricing": { "modexp": { "divisor": 20 } } } },
-		"0000000000000000000000000000000000000006": { "builtin": { "name": "alt_bn128_add", "activate_at": "0x0", "pricing": { "linear": { "base": 500, "word": 0 } } } },
-		"0000000000000000000000000000000000000007": { "builtin": { "name": "alt_bn128_mul", "activate_at": "0x0", "pricing": { "linear": { "base": 40000, "word": 0 } } } },
-		"0000000000000000000000000000000000000008": { "builtin": { "name": "alt_bn128_pairing", "activate_at": "0x0", "pricing": { "alt_bn128_pairing": { "base": 100000, "pair": 80000 } } } },
+		"0000000000000000000000000000000000000006": {
+			"builtin": {
+				"name": "alt_bn128_add",
+				"activate_at": "0x0",
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 500,
+						"eip1108_transition_price": 150
+					}
+				}
+			}
+		},
+		"0000000000000000000000000000000000000007": {
+			"builtin": {
+				"name": "alt_bn128_mul",
+				"activate_at": "0x0",
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 40000,
+						"eip1108_transition_price": 6000
+					}
+				}
+			}
+		},
+		"0000000000000000000000000000000000000008": {
+			"builtin": {
+				"name": "alt_bn128_pairing",
+				"activate_at": "0x0",
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_pairing": {
+						"base": 100000,
+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
+					}
+				}
+			}
+		},
 
 		"0x0000000000000000000000000000000000000001": {
 			"balance": "1",

ethcore/res/ethereum/rinkeby.json

@@ -117,40 +117,42 @@
 			}
 		},
 		"0x0000000000000000000000000000000000000006": {
-			"balance": "0x1",
 			"builtin": {
 				"name": "alt_bn128_add",
 				"activate_at": "0xfcc25",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
-					"linear": {
-						"base": 500,
-						"word": 0
+					"alt_bn128_const_operations": {
+						"price": 500,
+						"eip1108_transition_price": 150
 					}
 				}
 			}
 		},
 		"0x0000000000000000000000000000000000000007": {
-			"balance": "0x1",
 			"builtin": {
 				"name": "alt_bn128_mul",
 				"activate_at": "0xfcc25",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
-					"linear": {
-						"base": 40000,
-						"word": 0
+					"alt_bn128_const_operations": {
+						"price": 40000,
+						"eip1108_transition_price": 6000
 					}
 				}
 			}
 		},
 		"0x0000000000000000000000000000000000000008": {
-			"balance": "0x1",
 			"builtin": {
 				"name": "alt_bn128_pairing",
 				"activate_at": "0xfcc25",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
 					"alt_bn128_pairing": {
 						"base": 100000,
-						"pair": 80000
+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
 					}
 				}
 			}

ethcore/res/ethereum/ropsten.json

@@ -2735,10 +2735,11 @@
 			"builtin": {
 				"name": "alt_bn128_add",
 				"activate_at": "0x19f0a0",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
-					"linear": {
-						"base": 500,
-						"word": 0
+					"alt_bn128_const_operations": {
+						"price": 500,
+						"eip1108_transition_price": 150
 					}
 				}
 			}
@@ -2749,10 +2750,11 @@
 			"builtin": {
 				"name": "alt_bn128_mul",
 				"activate_at": "0x19f0a0",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
-					"linear": {
-						"base": 40000,
-						"word": 0
+					"alt_bn128_const_operations": {
+						"price": 40000,
+						"eip1108_transition_price": 6000
 					}
 				}
 			}
@@ -2763,10 +2765,13 @@
 			"builtin": {
 				"name": "alt_bn128_pairing",
 				"activate_at": "0x19f0a0",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
 					"alt_bn128_pairing": {
 						"base": 100000,
-						"pair": 80000
+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
 					}
 				}
 			}

ethcore/res/ethereum/st_peters_test.json

@@ -58,8 +58,46 @@
 		"0000000000000000000000000000000000000003": { "balance": "1", "builtin": { "name": "ripemd160", "pricing": { "linear": { "base": 600, "word": 120 } } } },
 		"0000000000000000000000000000000000000004": { "balance": "1", "builtin": { "name": "identity", "pricing": { "linear": { "base": 15, "word": 3 } } } },
 		"0000000000000000000000000000000000000005": { "builtin": { "name": "modexp", "activate_at": "0x00", "pricing": { "modexp": { "divisor": 20 } } } },
-		"0000000000000000000000000000000000000006": { "builtin": { "name": "alt_bn128_add", "activate_at": "0x00", "pricing": { "linear": { "base": 500, "word": 0 } } } },
-		"0000000000000000000000000000000000000007": { "builtin": { "name": "alt_bn128_mul", "activate_at": "0x00", "pricing": { "linear": { "base": 40000, "word": 0 } } } },
-		"0000000000000000000000000000000000000008": { "builtin": { "name": "alt_bn128_pairing", "activate_at": "0x00", "pricing": { "alt_bn128_pairing": { "base": 100000, "pair": 80000 } } } }
+		"0000000000000000000000000000000000000006": {
+			"builtin": {
+				"name": "alt_bn128_add",
+				"activate_at": "0x0",
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 500,
+						"eip1108_transition_price": 150
+					}
+				}
+			}
+		},
+		"0000000000000000000000000000000000000007": {
+			"builtin": {
+				"name": "alt_bn128_mul",
+				"activate_at": "0x0",
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 40000,
+						"eip1108_transition_price": 6000
+					}
+				}
+			}
+		},
+		"0000000000000000000000000000000000000008": {
+			"builtin": {
+				"name": "alt_bn128_pairing",
+				"activate_at": "0x0",
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_pairing": {
+						"base": 100000,
+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
+					}
+				}
+			}
+		}
 	}
 }

ethcore/res/ethereum/transition_test.json

@@ -57,9 +57,46 @@
 		"0000000000000000000000000000000000000002": { "balance": "1", "builtin": { "name": "sha256", "pricing": { "linear": { "base": 60, "word": 12 } } } },
 		"0000000000000000000000000000000000000003": { "balance": "1", "builtin": { "name": "ripemd160", "pricing": { "linear": { "base": 600, "word": 120 } } } },
 		"0000000000000000000000000000000000000004": { "balance": "1", "builtin": { "name": "identity", "pricing": { "linear": { "base": 15, "word": 3 } } } },
-		"0000000000000000000000000000000000000005": { "builtin": { "name": "modexp", "activate_at": "5", "pricing": { "modexp": { "divisor": 100 } } } },
-		"0000000000000000000000000000000000000006": { "builtin": { "name": "alt_bn128_add", "activate_at": "5", "pricing": { "linear": { "base": 500, "word": 0 } } } },
-		"0000000000000000000000000000000000000007": { "builtin": { "name": "alt_bn128_mul", "activate_at": "5", "pricing": { "linear": { "base": 2000, "word": 0 } } } },
-		"0000000000000000000000000000000000000008": { "builtin": { "name": "alt_bn128_pairing", "activate_at": "5", "pricing": { "alt_bn128_pairing": { "base": 100000, "pair": 80000 } } } }
+		"0000000000000000000000000000000000000006": {
+			"builtin": {
+				"name": "alt_bn128_add",
+				"activate_at": "5",
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 500,
+						"eip1108_transition_price": 150
+					}
+				}
+			}
+		},
+		"0000000000000000000000000000000000000007": {
+			"builtin": {
+				"name": "alt_bn128_mul",
+				"activate_at": "5",
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 40000,
+						"eip1108_transition_price": 6000
+					}
+				}
+			}
+		},
+		"0000000000000000000000000000000000000008": {
+			"builtin": {
+				"name": "alt_bn128_pairing",
+				"activate_at": "5",
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_pairing": {
+						"base": 100000,
+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
+					}
+				}
+			}
+		}
 	}
 }

ethcore/res/ethereum/xdai.json

@@ -0,0 +1,157 @@
+{
+  "name": "xDai Chain",
+  "dataDir": "xdai",
+  "engine": {
+    "authorityRound": {
+      "params": {
+        "stepDuration": 5,
+        "blockReward": "0x0",
+        "maximumUncleCountTransition": 0,
+        "maximumUncleCount": 0,
+        "validators": {
+          "multi": {
+            "0": {
+              "list": ["0xcace5b3c29211740e595850e80478416ee77ca21"]
+            },
+            "1300": {
+              "safeContract": "0x22e1229a2c5b95a60983b5577f745a603284f535"
+            }
+          }
+        },
+        "blockRewardContractAddress": "0x867305d19606aadba405ce534e303d0e225f9556",
+        "blockRewardContractTransition": 1310
+      }
+    }
+  },
+  "params": {
+    "gasLimitBoundDivisor": "0x400",
+    "maximumExtraDataSize": "0x20",
+    "minGasLimit": "0x1388",
+    "networkID": "100",
+    "eip140Transition": "0x0",
+    "eip211Transition": "0x0",
+    "eip214Transition": "0x0",
+    "eip658Transition": "0x0",
+    "eip145Transition": 1604400,
+    "eip1014Transition": 1604400,
+    "eip1052Transition": 1604400,
+    "eip1283Transition": 1604400,
+    "eip1283DisableTransition": 2508800,
+    "registrar": "0x1ec97dc137f5168af053c24460a1200502e1a9d2"
+  },
+  "genesis": {
+    "seal": {
+      "authorityRound": {
+        "step": "0x0",
+        "signature": "0x0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+      }
+    },
+    "difficulty": "0x20000",
+    "gasLimit": "0x989680"
+  },
+  "accounts": {
+    "0000000000000000000000000000000000000005": {
+      "builtin": {
+        "name": "modexp",
+        "activate_at": "0x0",
+        "pricing": {
+          "modexp": {
+            "divisor": 20
+          }
+        }
+      }
+    },
+    "0000000000000000000000000000000000000006": {
+      "builtin": {
+        "name": "alt_bn128_add",
+        "activate_at": "0x0",
+        "eip1108_transition": "0x7fffffffffffff",
+        "pricing": {
+          "alt_bn128_const_operations": {
+            "price": 500,
+            "eip1108_transition_price": 150
+          }
+        }
+      }
+    },
+    "0000000000000000000000000000000000000007": {
+      "builtin": {
+        "name": "alt_bn128_mul",
+        "activate_at": "0x0",
+        "eip1108_transition": "0x7fffffffffffff",
+        "pricing": {
+          "alt_bn128_const_operations": {
+            "price": 40000,
+            "eip1108_transition_price": 6000
+          }
+        }
+      }
+    },
+    "0000000000000000000000000000000000000008": {
+      "builtin": {
+        "name": "alt_bn128_pairing",
+        "activate_at": "0x0",
+        "eip1108_transition": "0x7fffffffffffff",
+        "pricing": {
+          "alt_bn128_pairing": {
+            "base": 100000,
+            "pair": 80000,
+            "eip1108_transition_base": 45000,
+            "eip1108_transition_pair": 34000
+          }
+        }
+      }
+    },
+    "0x0000000000000000000000000000000000000001": {
+      "balance": "1",
+      "builtin": {
+        "name": "ecrecover",
+        "pricing": {
+          "linear": {
+            "base": 3000,
+            "word": 0
+          }
+        }
+      }
+    },
+    "0x0000000000000000000000000000000000000002": {
+      "balance": "1",
+      "builtin": {
+        "name": "sha256",
+        "pricing": {
+          "linear": {
+            "base": 60,
+            "word": 12
+          }
+        }
+      }
+    },
+    "0x0000000000000000000000000000000000000003": {
+      "balance": "1",
+      "builtin": {
+        "name": "ripemd160",
+        "pricing": {
+          "linear": {
+            "base": 600,
+            "word": 120
+          }
+        }
+      }
+    },
+    "0x0000000000000000000000000000000000000004": {
+      "balance": "1",
+      "builtin": {
+        "name": "identity",
+        "pricing": {
+          "linear": {
+            "base": 15,
+            "word": 3
+          }
+        }
+      }
+    }
+  },
+  "nodes": [
+    "enode://66786c15390cb4fef3743571e12ec54ca343e7f119018136d68b670edd93604eedf74e5013dc5c2439f89e0e05593e29c409a97e155ea4165c6b832de131ef1e@3.214.113.185:30303"
+  ]
+}

ethcore/res/null.json

@@ -36,9 +36,50 @@
 		"0000000000000000000000000000000000000003": { "balance": "1", "nonce": "0", "builtin": { "name": "ripemd160", "pricing": { "linear": { "base": 600, "word": 120 } } } },
 		"0000000000000000000000000000000000000004": { "balance": "1", "nonce": "0", "builtin": { "name": "identity", "pricing": { "linear": { "base": 15, "word": 3 } } } },
 		"0000000000000000000000000000000000000005": { "balance": "1", "builtin": { "name": "modexp", "activate_at": 0, "pricing": { "modexp": { "divisor": 20 } } } },
-		"0000000000000000000000000000000000000006": { "balance": "1", "builtin": { "name": "alt_bn128_add", "activate_at": 0, "pricing": { "linear": { "base": 500, "word": 0 } } } },
-		"0000000000000000000000000000000000000007": { "balance": "1", "builtin": { "name": "alt_bn128_mul", "activate_at": 0, "pricing": { "linear": { "base": 40000, "word": 0 } } } },
-		"0000000000000000000000000000000000000008": { "balance": "1", "builtin": { "name": "alt_bn128_pairing", "activate_at": 0, "pricing": { "alt_bn128_pairing": { "base": 100000, "pair": 80000 } } } },
+		"0000000000000000000000000000000000000006": {
+			"balance": "1",
+			"builtin": {
+				"name": "alt_bn128_add",
+				"activate_at": 0,
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 500,
+						"eip1108_transition_price": 150
+					}
+				}
+			}
+		},
+		"0000000000000000000000000000000000000007": {
+			"balance": "1",
+			"builtin": {
+				"name": "alt_bn128_mul",
+				"activate_at": 0,
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 40000,
+						"eip1108_transition_price": 6000
+					}
+				}
+			}
+		},
+		"0000000000000000000000000000000000000008": {
+			"balance": "1",
+			"builtin": {
+				"name": "alt_bn128_pairing",
+				"activate_at": 0,
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_pairing": {
+						"base": 100000,
+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
+					}
+				}
+			}
+		},
 		"9cce34f7ab185c7aba1b7c8140d620b4bda941d6": { "balance": "1606938044258990275541962092341162602522202993782792835301376", "nonce": "0" }
 	}
 }

ethcore/src/client/mod.rs

@@ -54,7 +54,7 @@ pub use vm::{LastHashes, EnvInfo};
 pub use error::TransactionImportError;
 pub use verification::VerifierType;
 
-mod traits;
+pub mod traits;
 
 mod chain_notify;
 mod private_notify;

ethcore/src/engines/instant_seal.rs

@@ -19,6 +19,8 @@ use machine::Machine;
 use types::header::{Header, ExtendedHeader};
 use block::ExecutedBlock;
 use error::Error;
+use std::sync::atomic::{AtomicU64, Ordering};
+
 
 /// `InstantSeal` params.
 #[derive(Default, Debug, PartialEq)]
@@ -40,6 +42,7 @@ impl From<::ethjson::spec::InstantSealParams> for InstantSealParams {
 pub struct InstantSeal {
 	params: InstantSealParams,
 	machine: Machine,
+	last_sealed_block: AtomicU64,
 }
 
 impl InstantSeal {
@@ -48,6 +51,7 @@ impl InstantSeal {
 		InstantSeal {
 			params,
 			machine,
+			last_sealed_block: AtomicU64::new(0),
 		}
 	}
 }
@@ -62,11 +66,19 @@ impl Engine for InstantSeal {
 	fn sealing_state(&self) -> SealingState { SealingState::Ready }
 
 	fn generate_seal(&self, block: &ExecutedBlock, _parent: &Header) -> Seal {
-		if block.transactions.is_empty() {
-			Seal::None
-		} else {
-			Seal::Regular(Vec::new())
+		if !block.transactions.is_empty() {
+			let block_number = block.header.number();
+			let last_sealed_block = self.last_sealed_block.load(Ordering::SeqCst);
+			// Return a regular seal if the given block is _higher_ than
+			// the last sealed one
+			if block_number > last_sealed_block {
+				let prev_last_sealed_block = self.last_sealed_block.compare_and_swap(last_sealed_block, block_number, Ordering::SeqCst);
+				if prev_last_sealed_block == last_sealed_block {
+					return Seal::Regular(Vec::new())
+				}
+			}
 		}
+		Seal::None
 	}
 
 	fn verify_local_seal(&self, _header: &Header) -> Result<(), Error> {

ethcore/src/ethereum/mod.rs

@@ -57,6 +57,11 @@ pub fn new_poanet<'a, T: Into<SpecParams<'a>>>(params: T) -> Spec {
 	load(params.into(), include_bytes!("../../res/ethereum/poacore.json"))
 }
 
+/// Create a new xDai mainnet chain spec.
+pub fn new_xdai<'a, T: Into<SpecParams<'a>>>(params: T) -> Spec {
+        load(params.into(), include_bytes!("../../res/ethereum/xdai.json"))
+}
+
 /// Create a new Volta mainnet chain spec.
 pub fn new_volta<'a, T: Into<SpecParams<'a>>>(params: T) -> Spec {
 	load(params.into(), include_bytes!("../../res/ethereum/volta.json"))

ethcore/src/executive.rs

@@ -396,7 +396,8 @@ impl<'a> CallCreateExecutive<'a> {
 					let default = [];
 					let data = if let Some(ref d) = params.data { d as &[u8] } else { &default as &[u8] };
 
-					let cost = builtin.cost(data);
+					// NOTE(niklasad1): block number is used by `builtin alt_bn128 ops` to enable eip1108
+					let cost = builtin.cost(data, self.info.number);
 					if cost <= params.gas {
 						let mut builtin_out_buffer = Vec::new();
 						let result = {
@@ -406,7 +407,7 @@ impl<'a> CallCreateExecutive<'a> {
 						if let Err(e) = result {
 							state.revert_to_checkpoint();
 
-							Err(e.into())
+							Err(vm::Error::BuiltIn(e))
 						} else {
 							state.discard_checkpoint();
 

ethcore/src/externalities.rs

@@ -400,6 +400,10 @@ impl<'a, T: 'a, V: 'a, B: 'a> Ext for Externalities<'a, T, V, B>
 		self.env_info
 	}
 
+	fn chain_id(&self) -> u64 {
+		self.machine.params().chain_id
+	}
+
 	fn depth(&self) -> usize {
 		self.depth
 	}
@@ -420,6 +424,10 @@ impl<'a, T: 'a, V: 'a, B: 'a> Ext for Externalities<'a, T, V, B>
 		self.vm_tracer.trace_prepare_execute(pc, instruction, gas_cost, mem_written, store_written)
 	}
 
+	fn trace_failed(&mut self) {
+		self.vm_tracer.trace_failed();
+	}
+
 	fn trace_executed(&mut self, gas_used: U256, stack_push: &[U256], mem: &[u8]) {
 		self.vm_tracer.trace_executed(gas_used, stack_push, mem)
 	}

ethcore/src/json_tests/executive.rs

@@ -211,6 +211,8 @@ impl<'a, T: 'a, V: 'a, B: 'a> Ext for TestExt<'a, T, V, B>
 		self.ext.env_info()
 	}
 
+	fn chain_id(&self) -> u64 { 0 }
+
 	fn depth(&self) -> usize {
 		0
 	}

ethcore/src/lib.rs

@@ -55,13 +55,13 @@
 
 extern crate account_db;
 extern crate ansi_term;
-extern crate bn;
 extern crate common_types as types;
 extern crate crossbeam_utils;
 extern crate ethabi;
 extern crate ethash;
 extern crate ethcore_blockchain as blockchain;
 extern crate ethcore_bloom_journal as bloom_journal;
+extern crate ethcore_builtin as builtin;
 extern crate ethcore_call_contract as call_contract;
 extern crate ethcore_db as db;
 extern crate ethcore_io as io;
@@ -83,10 +83,8 @@ extern crate len_caching_lock;
 extern crate lru_cache;
 extern crate memory_cache;
 extern crate memory_db;
-extern crate num;
 extern crate num_cpus;
 extern crate parity_bytes as bytes;
-extern crate parity_crypto;
 extern crate parity_snappy as snappy;
 extern crate parking_lot;
 extern crate pod_account;
@@ -153,7 +151,6 @@ extern crate fetch;
 extern crate parity_runtime;
 
 pub mod block;
-pub mod builtin;
 pub mod client;
 pub mod engines;
 pub mod error;

ethcore/src/machine.rs

@@ -467,7 +467,7 @@ mod tests {
 
 	#[test]
 	fn should_disallow_unsigned_transactions() {
-		let rlp = "ea80843b9aca0083015f90948921ebb5f79e9e3920abe571004d0b1d5119c154865af3107a400080038080".into();
+		let rlp = "ea80843b9aca0083015f90948921ebb5f79e9e3920abe571004d0b1d5119c154865af3107a400080038080";
 		let transaction: UnverifiedTransaction = ::rlp::decode(&::rustc_hex::FromHex::from_hex(rlp).unwrap()).unwrap();
 		let spec = ::ethereum::new_ropsten_test();
 		let ethparams = get_default_ethash_extensions();

ethcore/src/miner/miner.rs

@@ -33,7 +33,7 @@ use futures::sync::mpsc;
 use io::IoChannel;
 use miner::filter_options::{FilterOptions, FilterOperator};
 use miner::pool_client::{PoolClient, CachedNonceClient, NonceCache};
-use miner;
+use miner::{self, MinerService};
 use parking_lot::{Mutex, RwLock};
 use rayon::prelude::*;
 use types::transaction::{
@@ -54,6 +54,7 @@ use client::{
 	BlockChain, ChainInfo, BlockProducer, SealedBlockImporter, Nonce, TransactionInfo, TransactionId
 };
 use client::{BlockId, ClientIoMessage};
+use client::traits::EngineClient;
 use engines::{Engine, Seal, SealingState, EngineSigner};
 use error::Error;
 use executed::ExecutionError;
@@ -509,7 +510,7 @@ impl Miner {
 			let sender = transaction.sender();
 
 			// Re-verify transaction again vs current state.
-			let result = client.verify_signed(&transaction)
+			let result = client.verify_for_pending_block(&transaction, &open_block.header)
 				.map_err(|e| e.into())
 				.and_then(|_| {
 					open_block.push_transaction(transaction, None)
@@ -855,9 +856,9 @@ impl Miner {
 			false
 		}
 	}
+
 	/// Prepare pending block, check whether sealing is needed, and then update sealing.
 	fn prepare_and_update_sealing<C: miner::BlockChainClient>(&self, chain: &C) {
-		use miner::MinerService;
 		match self.engine.sealing_state() {
 			SealingState::Ready => {
 				self.maybe_enable_sealing();
@@ -1414,6 +1415,9 @@ impl miner::MinerService for Miner {
 						service_transaction_checker.as_ref(),
 					);
 					queue.cull(client);
+					if is_internal_import {
+						chain.update_sealing();
+					}
 				};
 
 				if let Err(e) = channel.send(ClientIoMessage::execute(cull)) {
@@ -1421,8 +1425,12 @@ impl miner::MinerService for Miner {
 				}
 			} else {
 				self.transaction_queue.cull(client);
+				if is_internal_import {
+					self.update_sealing(chain);
+				}
 			}
 		}
+
 		if let Some(ref service_transaction_checker) = self.service_transaction_checker {
 			match service_transaction_checker.refresh_cache(chain) {
 				Ok(true) => {

ethcore/src/miner/pool_client.rs

@@ -113,11 +113,13 @@ impl<'a, C: 'a> PoolClient<'a, C> where
 		}
 	}
 
-	/// Verifies if signed transaction is executable.
+	/// Verifies transaction against its block (before its import into this block)
+	/// Also Verifies if signed transaction is executable.
 	///
 	/// This should perform any verifications that rely on chain status.
-	pub fn verify_signed(&self, tx: &SignedTransaction) -> Result<(), transaction::Error> {
-		self.engine.machine().verify_transaction(&tx, &self.best_block_header, self.chain)
+	pub fn verify_for_pending_block(&self, tx: &SignedTransaction, header: &Header) -> Result<(), transaction::Error> {
+		self.engine.machine().verify_transaction_basic(tx, header)?;
+		self.engine.machine().verify_transaction(tx, &self.best_block_header, self.chain)
 	}
 }
 
@@ -138,8 +140,7 @@ impl<'a, C: 'a> pool::client::Client for PoolClient<'a, C> where
 		self.engine.verify_transaction_basic(&tx, &self.best_block_header)?;
 		let tx = self.engine.verify_transaction_unordered(tx, &self.best_block_header)?;
 
-		self.verify_signed(&tx)?;
-
+		self.engine.machine().verify_transaction(&tx, &self.best_block_header, self.chain)?;
 		Ok(tx)
 	}
 

ethcore/src/spec/spec.rs

@@ -65,7 +65,7 @@ fn fmt_err<F: ::std::fmt::Display>(f: F) -> String {
 /// we define a "bugfix" hard fork as any hard fork which
 /// you would put on-by-default in a new chain.
 #[derive(Debug, PartialEq, Default)]
-#[cfg_attr(test, derive(Clone))]
+#[cfg_attr(any(test, feature = "test-helpers"), derive(Clone))]
 pub struct CommonParams {
 	/// Account start nonce.
 	pub account_start_nonce: U256,
@@ -123,6 +123,10 @@ pub struct CommonParams {
 	pub eip1283_disable_transition: BlockNumber,
 	/// Number of first block where EIP-1014 rules begin.
 	pub eip1014_transition: BlockNumber,
+	/// Number of first block where EIP-1344 rules begin: https://github.com/ethereum/EIPs/blob/master/EIPS/eip-1344.md
+	pub eip1344_transition: BlockNumber,
+	/// Number of first block where EIP-2028 rules begin.
+	pub eip2028_transition: BlockNumber,
 	/// Number of first block where dust cleanup rules (EIP-168 and EIP169) begin.
 	pub dust_protection_transition: BlockNumber,
 	/// Nonce cap increase per block. Nonce cap is only checked if dust protection is enabled.
@@ -189,7 +193,11 @@ impl CommonParams {
 		schedule.have_return_data = block_number >= self.eip211_transition;
 		schedule.have_bitwise_shifting = block_number >= self.eip145_transition;
 		schedule.have_extcodehash = block_number >= self.eip1052_transition;
+		schedule.have_chain_id = block_number >= self.eip1344_transition;
 		schedule.eip1283 = block_number >= self.eip1283_transition && !(block_number >= self.eip1283_disable_transition);
+		if block_number >= self.eip2028_transition {
+			schedule.tx_data_non_zero_gas = 16;
+		}
 		if block_number >= self.eip210_transition {
 			schedule.blockhash_gas = 800;
 		}
@@ -308,6 +316,14 @@ impl From<ethjson::spec::Params> for CommonParams {
 				BlockNumber::max_value,
 				Into::into,
 			),
+			eip1344_transition: p.eip1344_transition.map_or_else(
+				BlockNumber::max_value,
+				Into::into,
+			),
+			eip2028_transition: p.eip2028_transition.map_or_else(
+				BlockNumber::max_value,
+				Into::into,
+			),
 			dust_protection_transition: p.dust_protection_transition.map_or_else(
 				BlockNumber::max_value,
 				Into::into,

ethcore/src/trace/executive_tracer.rs

@@ -16,6 +16,7 @@
 
 //! Simple executive tracer.
 
+use std::cmp::min;
 use ethereum_types::{U256, Address};
 use vm::{Error as VmError, ActionParams};
 use log::{debug, warn};
@@ -194,12 +195,16 @@ impl Tracer for ExecutiveTracer {
 	}
 }
 
+struct TraceData {
+	mem_written: Option<(usize, usize)>,
+	store_written: Option<(U256, U256)>,
+}
+
 /// Simple VM tracer. Traces all operations.
 pub struct ExecutiveVMTracer {
 	data: VMTrace,
 	depth: usize,
-	last_mem_written: Option<(usize, usize)>,
-	last_store_written: Option<(U256, U256)>,
+	trace_stack: Vec<TraceData>,
 }
 
 impl ExecutiveVMTracer {
@@ -213,8 +218,7 @@ impl ExecutiveVMTracer {
 				subs: vec![],
 			},
 			depth: 0,
-			last_mem_written: None,
-			last_store_written: None,
+			trace_stack: vec![],
 		}
 	}
 
@@ -241,30 +245,27 @@ impl VMTracer for ExecutiveVMTracer {
 				executed: None,
 			});
 		});
-		self.last_mem_written = mem_written;
-		self.last_store_written = store_written;
+		self.trace_stack.push(TraceData { mem_written, store_written });
+	}
+
+	fn trace_failed(&mut self) {
+		let _ = self.trace_stack.pop().expect("pushed in trace_prepare_execute; qed");
 	}
 
 	fn trace_executed(&mut self, gas_used: U256, stack_push: &[U256], mem: &[u8]) {
-		let mem_diff = self.last_mem_written.take().map(|(o, s)| {
+		let TraceData { mem_written, store_written } = self.trace_stack.pop().expect("pushed in trace_prepare_execute; qed");
+		let mem_diff = mem_written.map(|(o, s)| {
 			if o + s > mem.len() {
-				warn!(
-					target: "trace",
-					"Last mem written is out of bounds {} (mem is {})",
-					o + s,
-					mem.len(),
-				);
-				(o, &[][..])
-			} else {
-				(o, &(mem[o..o+s]))
+				warn!(target: "trace", "mem_written is out of bounds");
 			}
+			(o, &mem[min(mem.len(), o)..min(o + s, mem.len())])
 		});
-		let store_diff = self.last_store_written.take();
+		let store_diff = store_written;
 		Self::with_trace_in_depth(&mut self.data, self.depth, move |trace| {
 			let ex = VMExecutedOperation {
 				gas_used: gas_used,
-				stack_push: stack_push.iter().cloned().collect(),
-				mem_diff: mem_diff.map(|(s, r)| MemoryDiff { offset: s, data: r.iter().cloned().collect() }),
+				stack_push: stack_push.to_vec(),
+				mem_diff: mem_diff.map(|(s, r)| MemoryDiff { offset: s, data: r.to_vec() }),
 				store_diff: store_diff.map(|(l, v)| StorageDiff { location: l, value: v }),
 			};
 			trace.operations.last_mut().expect("trace_executed is always called after a trace_prepare_execute; trace.operations cannot be empty; qed").executed = Some(ex);

ethcore/src/trace/mod.rs

@@ -85,6 +85,9 @@ pub trait VMTracer: Send {
 	/// Trace the preparation to execute a single valid instruction.
 	fn trace_prepare_execute(&mut self, _pc: usize, _instruction: u8, _gas_cost: U256, _mem_written: Option<(usize, usize)>, _store_written: Option<(U256, U256)>) {}
 
+	/// Trace the execution failure of a single instruction.
+	fn trace_failed(&mut self) {}
+
 	/// Trace the finalised execution of a single valid instruction.
 	fn trace_executed(&mut self, _gas_used: U256, _stack_push: &[U256], _mem: &[u8]) {}
 

ethcore/types/Cargo.toml

@@ -16,4 +16,7 @@ rlp_derive = { path = "../../util/rlp-derive" }
 unexpected = { path = "../../util/unexpected" }
 
 [dev-dependencies]
-rustc-hex= "1.0"
+rustc-hex = "1.0"
+
+[features]
+test-helpers = []

ethcore/types/src/transaction/error.rs

@@ -28,9 +28,6 @@ pub enum Error {
 	AlreadyImported,
 	/// Transaction is not valid anymore (state already has higher nonce)
 	Old,
-	/// Transaction has too low fee
-	/// (there is already a transaction with the same sender-nonce but higher gas price)
-	TooCheapToReplace,
 	/// Transaction was not imported to the queue because limit has been reached.
 	LimitReached,
 	/// Transaction's gas price is below threshold.
@@ -40,6 +37,14 @@ pub enum Error {
 		/// Transaction gas price
 		got: U256,
 	},
+	/// Transaction has too low fee
+	/// (there is already a transaction with the same sender-nonce but higher gas price)
+	TooCheapToReplace {
+		/// previous transaction's gas price
+		prev: Option<U256>,
+		/// new transaction's gas price
+		new: Option<U256>,
+	},
 	/// Transaction's gas is below currently set minimal gas requirement.
 	InsufficientGas {
 		/// Minimal expected gas
@@ -99,7 +104,10 @@ impl fmt::Display for Error {
 		let msg = match *self {
 			AlreadyImported => "Already imported".into(),
 			Old => "No longer valid".into(),
-			TooCheapToReplace => "Gas price too low to replace".into(),
+			TooCheapToReplace { prev, new } =>
+				format!("Gas price too low to replace, previous tx gas: {:?}, new tx gas: {:?}",
+						prev, new
+				),
 			LimitReached => "Transaction limit reached".into(),
 			InsufficientGasPrice { minimal, got } =>
 				format!("Insufficient gas price. Min={}, Given={}", minimal, got),

ethcore/types/src/transaction/transaction.rs

@@ -54,7 +54,11 @@ impl Default for Action {
 impl rlp::Decodable for Action {
 	fn decode(rlp: &Rlp) -> Result<Self, DecoderError> {
 		if rlp.is_empty() {
-			Ok(Action::Create)
+			if rlp.is_data() {
+				Ok(Action::Create)
+			} else {
+				Err(DecoderError::RlpExpectedToBeData)
+			}
 		} else {
 			Ok(Action::Call(rlp.as_val()?))
 		}
@@ -566,6 +570,20 @@ mod tests {
 		assert_eq!(t.chain_id(), None);
 	}
 
+	#[test]
+	fn empty_atom_as_create_action() {
+		let empty_atom = [0x80];
+		let action: Action = rlp::decode(&empty_atom).unwrap();
+		assert_eq!(action, Action::Create);
+	}
+
+	#[test]
+	fn empty_list_as_create_action_rejected() {
+		let empty_list = [0xc0];
+		let action: Result<Action, DecoderError> = rlp::decode(&empty_list);
+		assert_eq!(action, Err(DecoderError::RlpExpectedToBeData));
+	}
+
 	#[test]
 	fn signing_eip155_zero_chainid() {
 		use ethkey::{Random, Generator};

ethcore/vm/src/env_info.rs

@@ -65,7 +65,7 @@ impl From<ethjson::vm::Env> for EnvInfo {
 	fn from(e: ethjson::vm::Env) -> Self {
 		let number = e.number.into();
 		EnvInfo {
-			number: number,
+			number,
 			author: e.author.into(),
 			difficulty: e.difficulty.into(),
 			gas_limit: e.gas_limit.into(),

ethcore/vm/src/ext.rs

@@ -144,6 +144,9 @@ pub trait Ext {
 	/// Returns environment info.
 	fn env_info(&self) -> &EnvInfo;
 
+	/// Returns the chain ID of the blockchain
+	fn chain_id(&self) -> u64;
+
 	/// Returns current depth of execution.
 	///
 	/// If contract A calls contract B, and contract B calls C,
@@ -160,8 +163,12 @@ pub trait Ext {
 	fn trace_next_instruction(&mut self, _pc: usize, _instruction: u8, _current_gas: U256) -> bool { false }
 
 	/// Prepare to trace an operation. Passthrough for the VM trace.
+	/// For each call of `trace_prepare_execute` either `trace_failed` or `trace_executed` MUST be called.
 	fn trace_prepare_execute(&mut self, _pc: usize, _instruction: u8, _gas_cost: U256, _mem_written: Option<(usize, usize)>, _store_written: Option<(U256, U256)>) {}
 
+	/// Trace the execution failure of a single instruction.
+	fn trace_failed(&mut self) {}
+
 	/// Trace the finalised execution of a single instruction.
 	fn trace_executed(&mut self, _gas_used: U256, _stack_push: &[U256], _mem: &[u8]) {}
 

ethcore/vm/src/schedule.rs

@@ -84,7 +84,7 @@ pub struct Schedule {
 	pub tx_create_gas: usize,
 	/// Additional cost for empty data transaction
 	pub tx_data_zero_gas: usize,
-	/// Aditional cost for non-empty data transaction
+	/// Additional cost for non-empty data transaction
 	pub tx_data_non_zero_gas: usize,
 	/// Gas price for copying memory
 	pub copy_gas: usize,
@@ -115,6 +115,8 @@ pub struct Schedule {
 	pub have_return_data: bool,
 	/// SHL, SHR, SAR opcodes enabled.
 	pub have_bitwise_shifting: bool,
+	/// CHAINID opcode enabled.
+	pub have_chain_id: bool,
 	/// Kill basic accounts below this balance if touched.
 	pub kill_dust: CleanDustMode,
 	/// Enable EIP-1283 rules
@@ -209,6 +211,7 @@ impl Schedule {
 			have_revert: false,
 			have_return_data: false,
 			have_bitwise_shifting: false,
+			have_chain_id: false,
 			have_extcodehash: false,
 			stack_limit: 1024,
 			max_depth: 1024,
@@ -275,6 +278,14 @@ impl Schedule {
 		schedule
 	}
 
+	/// Schedule for the Istanbul fork of the Ethereum main net.
+	pub fn new_istanbul() -> Schedule {
+		let mut schedule = Self::new_constantinople();
+		schedule.have_chain_id = true;
+		schedule.tx_data_non_zero_gas = 16;
+		schedule
+	}
+
 	fn new(efcd: bool, hdc: bool, tcg: usize) -> Schedule {
 		Schedule {
 			exceptional_failed_code_deposit: efcd,
@@ -283,6 +294,7 @@ impl Schedule {
 			have_revert: false,
 			have_return_data: false,
 			have_bitwise_shifting: false,
+			have_chain_id: false,
 			have_extcodehash: false,
 			stack_limit: 1024,
 			max_depth: 1024,

ethcore/vm/src/tests.rs

@@ -67,6 +67,8 @@ pub struct FakeExt {
 	pub balances: HashMap<Address, U256>,
 	pub tracing: bool,
 	pub is_static: bool,
+
+	chain_id: u64,
 }
 
 // similar to the normal `finalize` function, but ignoring NeedsReturn.
@@ -98,11 +100,24 @@ impl FakeExt {
 		ext
 	}
 
+	/// New fake externalities with Istanbul schedule rules
+	pub fn new_istanbul() -> Self {
+		let mut ext = FakeExt::default();
+		ext.schedule = Schedule::new_istanbul();
+		ext
+	}
+
 	/// Alter fake externalities to allow wasm
 	pub fn with_wasm(mut self) -> Self {
 		self.schedule.wasm = Some(Default::default());
 		self
 	}
+
+	/// Set chain ID
+	pub fn with_chain_id(mut self, chain_id: u64) -> Self {
+		self.chain_id = chain_id;
+		self
+	}
 }
 
 impl Ext for FakeExt {
@@ -200,7 +215,7 @@ impl Ext for FakeExt {
 
 	fn log(&mut self, topics: Vec<H256>, data: &[u8]) -> Result<()> {
 		self.logs.push(FakeLogEntry {
-			topics: topics,
+			topics,
 			data: data.to_vec()
 		});
 		Ok(())
@@ -223,6 +238,10 @@ impl Ext for FakeExt {
 		&self.info
 	}
 
+	fn chain_id(&self) -> u64 {
+		self.chain_id
+	}
+
 	fn depth(&self) -> usize {
 		self.depth
 	}