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[Link to related issue(s) here, if any]
Closes #681
Technically this change is breaking, in that we allocate slightly more memory on the stack when copying the contract code, to account for the contract offset, which could cause a memory overfow.
We also make more checks in other functions that previously used the
storage_contract
function.Some of these might be an overkill.
[Short description of the changes.]
When loading code into the stack, we avoid to allocate a new Vector to fetch the contract code, and then copy the result into the stack, in favour of writing the contract code directly into the stack.
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