Fixes an underflow bug when calculating the timestamp to rewind a chain to.
Ignores chain rewinds if the timestamp changes are pre-genesis.
Tests
Will test on a devnet.
Additional context
We had a chain rewind on our internal sepolia-devnet-0 on Jan 29 because the Canyon activation time changed from 0 to 1698436800 (Fri Oct 27 20:00:00 UTC 2023) when we set Base's Canyon activation time as the canonical time in the superchain-registry but didn't overwrite it to 0 again.
This change allows us to overwrite the Canyon activation time on sepolia-devnet-0 back to 0 without causing another chain rewind.
Description
Tests
Will test on a devnet.
Additional context
We had a chain rewind on our internal
sepolia-devnet-0on Jan 29 because the Canyon activation time changed from0to1698436800(Fri Oct 27 20:00:00 UTC 2023) when we set Base's Canyon activation time as the canonical time in the superchain-registry but didn't overwrite it to 0 again.This change allows us to overwrite the Canyon activation time on
sepolia-devnet-0back to0without causing another chain rewind.We might want to upstream (parts of) this.
Metadata