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Merge pull request #2368 from Nashatyrev/fix/root-for-empty-shard-header 

[Sharding] Calc the right root with respect to (slot, shard) for an empty PendingShardHeader
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Diederik Loerakker 2021-05-14 14:44:56 +02:00 committed by GitHub
parent 4cd9a6c710 3cc1256a72
commit a1e64c1ceb
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1 changed files with 12 additions and 7 deletions
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19
specs/sharding/beacon-chain.md
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@ -512,17 +512,22 @@ def update_pending_votes(state: BeaconState, attestation: Attestation) -> None:
pending_headers = state.current_epoch_pending_shard_headers pending_headers = state.current_epoch_pending_shard_headers
else: else:
pending_headers = state.previous_epoch_pending_shard_headers pending_headers = state.previous_epoch_pending_shard_headers
pending_header = None
for header in pending_headers: attestation_shard = compute_shard_from_committee_index(
if header.root == attestation.data.shard_header_root:
pending_header = header
assert pending_header is not None
assert pending_header.slot == attestation.data.slot
assert pending_header.shard == compute_shard_from_committee_index(
state, state,
attestation.data.slot, attestation.data.slot,
attestation.data.index, attestation.data.index,
) )
pending_header = None
for header in pending_headers:
if (
header.root == attestation.data.shard_header_root
and header.slot == attestation.data.slot
and header.shard == attestation_shard
):
pending_header = header
assert pending_header is not None
for i in range(len(pending_header.votes)): for i in range(len(pending_header.votes)):
pending_header.votes[i] = pending_header.votes[i] or attestation.aggregation_bits[i] pending_header.votes[i] = pending_header.votes[i] or attestation.aggregation_bits[i]