Fix: storage read and refund strategy - Githubissues

vyperlang / titanoboa

a vyper interpreter

https://titanoboa.readthedocs.io

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Fix: storage read and refund strategy #161

Closed romanagureev closed 5 months ago

romanagureev commented 5 months ago

What I did

Storage does not show deleted slots as though they are not registered. Thence data is fetched from RPC and leads to errors.
According to EIP2200 specification call-frame refund counters can go negative, so I changed strategy to appropriate.

How I did it

Added more precise checks along with autocaching values.
Set strategy at initialisation.

How to verify it

There is a test flipping slot to zero and back.

Description for the changelog

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charles-cooper commented 5 months ago

thanks @romanagureev, very nice work!