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Fix wasted iterations when getting previous state

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Paul Hauner 2019-09-23 22:22:19 +10:00
parent e7a580393c
commit 4fccec158a
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1 changed files with 2 additions and 1 deletions
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3
beacon_node/beacon_chain/src/beacon_chain.rs
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@ -393,7 +393,8 @@ impl<T: BeaconChainTypes> BeaconChain<T> {
} else { } else {
let state_root = self let state_root = self
.rev_iter_state_roots() .rev_iter_state_roots()
.find(|(_root, s)| *s == slot) .take_while(|(_root, current_slot)| *current_slot >= slot)
.find(|(_root, current_slot)| *current_slot == slot)
.map(|(root, _slot)| root) .map(|(root, _slot)| root)
.ok_or_else(|| Error::NoStateForSlot(slot))?; .ok_or_else(|| Error::NoStateForSlot(slot))?;