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fix: gloas from genesis

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- Fix forkchoice update sending zero-hash head to EL at genesis by reading
  latest_block_hash from state when the genesis bid hashes are all zeros
- Simplify genesis block construction — the genesis block body is empty per
  spec, remove the incorrect bid-copying logic and body root override in
  initialize_beacon_state_from_eth1
This commit is contained in:
Josh King
2026-04-27 23:26:29 +02:00
committed by Eitan Seri-Levi
parent effcd08223
commit 0078b6be89
2 changed files with 22 additions and 25 deletions
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19
consensus/fork_choice/src/fork_choice.rs
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@@ -416,11 +416,24 @@ where
let (execution_status, execution_payload_parent_hash, execution_payload_block_hash) =
if let Ok(signed_bid) = anchor_block.message().body().signed_execution_payload_bid() {
// Gloas: execution status is irrelevant post-Gloas; payload validation
// is decoupled from beacon blocks.
// At Gloas genesis the block bid is empty (all zeros) per spec, but the
// state holds the EL genesis hash in `latest_block_hash`. Use it so the
// first forkchoice update sends a valid head to the EL.
let parent_hash = if anchor_block.slot() == spec.genesis_slot
&& anchor_state.slot() == spec.genesis_slot
&& signed_bid.message.parent_block_hash.into_root().is_zero()
&& signed_bid.message.block_hash.into_root().is_zero()
{
*anchor_state
.latest_block_hash()
.map_err(Error::BeaconStateError)?
} else {
signed_bid.message.parent_block_hash
};
(
ExecutionStatus::irrelevant(),
Some(signed_bid.message.parent_block_hash),
Some(parent_hash),
Some(signed_bid.message.block_hash),
)
} else if let Ok(execution_payload) = anchor_block.message().execution_payload() {