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Lazy storage on delegate

What it does​

Checks for non-lazy storage when using delegate calls.

Why is this bad?​

ink! has a bug that prevents delegate calls from modifying the storage of the caller.

More info​

Example​

    #[ink(storage)]
    pub struct Contract {
       admin: AccountId,
    }

Use instead:

    #[ink(storage)]
    pub struct Contract {
        admin: Lazy<AccountId, ManualKey<12345>>,
    }

Implementation​

The detector's implementation can be found at this link.