use new(big.Int) so we don't modify the epoch value (#4523)

1 year ago · 3f6a0db28e
parent 2378b2d880
commit 3f6a0db28e
1 changed files with 1 additions and 1 deletions
--- a/internal/params/config.go
+++ b/internal/params/config.go
@ -812,7 +812,7 @@ func (c *ChainConfig) IsHIP30(epoch *big.Int) bool {
 // During this epoch, shards 2 and 3 will start sending
 // their balances over to shard 0 or 1.
 func (c *ChainConfig) IsOneEpochBeforeHIP30(epoch *big.Int) bool {
-	return epoch.Sub(c.HIP30Epoch, epoch).Cmp(common.Big1) == 0
+	return new(big.Int).Sub(c.HIP30Epoch, epoch).Cmp(common.Big1) == 0
 }

 // UpdateEthChainIDByShard update the ethChainID based on shard ID.