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Validate if gas limit is not zero (#8307)

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This commit is contained in:
Andronik Ordian
2018-04-04 18:14:59 +03:00
committed by Marek Kotewicz
parent d57944ffb9
commit 811d165458
2 changed files with 4 additions and 3 deletions
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4
ethcore/src/machine.rs
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@@ -203,10 +203,11 @@ impl EthereumMachine {
/// The gas floor target must not be lower than the engine's minimum gas limit.
pub fn populate_from_parent(&self, header: &mut Header, parent: &Header, gas_floor_target: U256, gas_ceil_target: U256) {
header.set_difficulty(parent.difficulty().clone());
let gas_limit = parent.gas_limit().clone();
assert!(!gas_limit.is_zero(), "Gas limit should be > 0");
if let Some(ref ethash_params) = self.ethash_extensions {
let gas_limit = {
let gas_limit = parent.gas_limit().clone();
let bound_divisor = self.params().gas_limit_bound_divisor;
let lower_limit = gas_limit - gas_limit / bound_divisor + 1.into();
let upper_limit = gas_limit + gas_limit / bound_divisor - 1.into();
@@ -238,7 +239,6 @@ impl EthereumMachine {
}
header.set_gas_limit({
let gas_limit = parent.gas_limit().clone();
let bound_divisor = self.params().gas_limit_bound_divisor;
if gas_limit < gas_floor_target {
cmp::min(gas_floor_target, gas_limit + gas_limit / bound_divisor - 1.into())