vm ext ret function used u256 instead of u64

src/evm/ext.rs

@@ -48,7 +48,7 @@ pub trait Ext {
 
 	/// Should be called when transaction calls `RETURN` opcode.
 	/// Returns gas_left if cost of returning the data is not too high.
-	fn ret(&mut self, gas: u64, data: &[u8]) -> Result<u64, Error>;
+	fn ret(&mut self, gas: &U256, data: &[u8]) -> Result<U256, Error>;
 
 	/// Should be called when contract commits suicide.
 	/// Address to which funds should be refunded.

src/evm/jit.rs

@@ -345,7 +345,7 @@ impl evm::Evm for JitEvm {
 		
 		match res {
 			evmjit::ReturnCode::Stop => Ok(U256::from(context.gas_left())),
-			evmjit::ReturnCode::Return => ext.ret(context.gas_left(), context.output_data()).map(|gas_left| U256::from(gas_left)),
+			evmjit::ReturnCode::Return => ext.ret(&U256::from(context.gas_left()), context.output_data()),
 			evmjit::ReturnCode::Suicide => { 
 				ext.suicide(&Address::from_jit(&context.suicide_refund_address()));
 				Ok(U256::from(context.gas_left()))

src/evm/tests.rs

@@ -68,7 +68,7 @@ impl Ext for FakeExt {
 		});
 	}
 
-	fn ret(&mut self, _gas: u64, _data: &[u8]) -> result::Result<u64, evm::Error> {
+	fn ret(&mut self, _gas: &U256, _data: &[u8]) -> result::Result<U256, evm::Error> {
 		unimplemented!();
 	}