Provenance

vstd::raw_ptr

Struct Provenance 

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pub struct Provenance {}
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Provenance

A full model of provenance is given by formalisms such as “Stacked Borrows” or “Tree Borrows.”

None of these models are finalized, nor has Rust committed to them. Rust’s recent RFC on provenance simply details that there is some concept of provenance.

Our model here, likewise, simply declares Provenance as an abstract type.

MiniRust currently declares a pointer has an Option<Provenance>; the model here gives provenance a special “null” value instead of using an option.

More reading for reference:

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impl Provenance

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pub uninterp fn null() -> Self

The provenance of the null ptr (or really, “no provenance”)

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impl<T> Any for T
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Calls U::from(self).

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exec fn obeys_into_spec() -> bool

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open spec fn obeys_into_spec() -> bool

{ <U as FromSpec<Self>>::obeys_from_spec() }
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open spec fn into_spec(self) -> U

{ U::from_spec(self) }
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type Error = <U as TryFrom<T>>::Error

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