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docs: fix spelling on 2021-08-22 postmortem (#23595)

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Pete 2021-09-20 21:33:15 +10:00 committed by GitHub
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docs/postmortems/2021-08-22-split-postmortem.md
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@ -16,7 +16,7 @@ This is a post-mortem concerning the minority split that occurred on Ethereum ma
### 2021-08-17 RETURNDATA corruption via datacopy ### 2021-08-17 RETURNDATA corruption via datacopy
On 2021-08-17, Guido Vranken submitted a report to bounty@ethereum.org. This co-incided with a geth-meetup in Berlin, so the geth team could fairly quickly analyse the issue. On 2021-08-17, Guido Vranken submitted a report to bounty@ethereum.org. This coincided with a geth-meetup in Berlin, so the geth team could fairly quickly analyse the issue.
He submitted a proof of concept which called the `dataCopy` precompile, where the input slice and output slice were overlapping but shifted. Doing a `copy` where the `src` and `dest` overlaps is not a problem in itself, however, the `returnData`slice was _also_ using the same memory as a backing-array. He submitted a proof of concept which called the `dataCopy` precompile, where the input slice and output slice were overlapping but shifted. Doing a `copy` where the `src` and `dest` overlaps is not a problem in itself, however, the `returnData`slice was _also_ using the same memory as a backing-array.