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Use helper `compute_previous_slot`

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terence tsao 2020-05-23 15:22:49 -07:00 committed by GitHub
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specs/phase1/beacon-chain.md
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@ -801,7 +801,7 @@ def apply_shard_transition(state: BeaconState, shard: Shard, transition: ShardTr
# Save updated state # Save updated state
state.shard_states[shard] = transition.shard_states[len(transition.shard_states) - 1] state.shard_states[shard] = transition.shard_states[len(transition.shard_states) - 1]
state.shard_states[shard].slot = state.slot - 1 state.shard_states[shard].slot = compute_previous_slot(state.slot)
``` ```
###### `process_crosslink_for_shard` ###### `process_crosslink_for_shard`
@ -953,7 +953,7 @@ def process_attester_slashing(state: BeaconState, attester_slashing: AttesterSla
def verify_shard_transition_false_positives(state: BeaconState, block_body: BeaconBlockBody) -> None: def verify_shard_transition_false_positives(state: BeaconState, block_body: BeaconBlockBody) -> None:
# Verify that a `shard_transition` in a block is empty if an attestation was not processed for it # Verify that a `shard_transition` in a block is empty if an attestation was not processed for it
for shard in range(get_active_shard_count(state)): for shard in range(get_active_shard_count(state)):
if state.shard_states[shard].slot != state.slot - 1: if state.shard_states[shard].slot != compute_previous_slot(state.slot):
assert block_body.shard_transitions[shard] == ShardTransition() assert block_body.shard_transitions[shard] == ShardTransition()
``` ```