status-im/nimbus-eth2
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avoid memory alloc when padding (#1058)

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also avoid stack state copy in test
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Jacek Sieka 2020-05-22 10:31:19 +02:00 committed by GitHub
parent 80b8416305
commit 681b399e2a
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beacon_chain/ssz.nim
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@ -306,7 +306,7 @@ func mergeBranches(existing: Eth2Digest, newData: openarray[byte]): Eth2Digest =
let paddingBytes = bytesPerChunk - newData.len let paddingBytes = bytesPerChunk - newData.len
if paddingBytes > 0: if paddingBytes > 0:
trs "USING ", paddingBytes, " PADDING BYTES" trs "USING ", paddingBytes, " PADDING BYTES"
h.update zeroChunk[0 ..< paddingBytes] h.update zeroChunk.toOpenArray(0, paddingBytes - 1)
trs "HASH RESULT ", result trs "HASH RESULT ", result
template mergeBranches(a, b: Eth2Digest): Eth2Digest = template mergeBranches(a, b: Eth2Digest): Eth2Digest =