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fix underflow in deposit procesing (#1542)

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This commit is contained in:
Dustin Brody 2020-08-21 15:34:14 +02:00 committed by zah
parent 61538fa581
commit 99e330d014
1 changed files with 2 additions and 2 deletions
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4
beacon_chain/spec/state_transition_block.nim
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@ -290,10 +290,10 @@ proc process_operations(preset: RuntimePreset,
# Verify that outstanding deposits are processed up to the maximum number of
# deposits
let
num_deposits = uint64 len(body.deposits)
req_deposits = min(MAX_DEPOSITS,
state.eth1_data.deposit_count - state.eth1_deposit_index)
if not (num_deposits == req_deposits):
if state.eth1_data.deposit_count < state.eth1_deposit_index or
body.deposits.lenu64 != req_deposits:
return err("incorrect number of deposits")
template for_ops(operations: auto, fn: auto) =