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core/vm/instructions.go,interpreter.go | potential issue fix #23535

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ucwong
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@ucwong ucwong commented Sep 6, 2021

Some consensus issue occurred after merge this pr in my repo
#23381
but I am not sure it will occur in go-ethereum

It is fixed by this CortexFoundation/CortexTheseus@cb78eb6
I hope it will do some help

@holiman
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holiman commented Sep 6, 2021

The change your proposing actually reverts a fix to a consensus issue. The issue was that returndata was modified during the memory copy, in certain conditions.
See #23518 -- more explanation, the so far DRAFT post-mortem of the incident.

@holiman holiman closed this Sep 6, 2021
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