Struct core::mem::Assume

pub struct Assume {
    pub alignment: bool,
    pub lifetimes: bool,
    pub validity: bool,
    pub visibility: bool,
}

🔬This is a nightly-only experimental API. (transmutability #99571)

What transmutation safety conditions shall the compiler assume that you are checking?

Fields

alignment: bool

🔬This is a nightly-only experimental API. (transmutability #99571)

When true, the compiler assumes that you are ensuring (either dynamically or statically) that destination referents do not have stricter alignment requirements than source referents.

lifetimes: bool

🔬This is a nightly-only experimental API. (transmutability #99571)

When true, the compiler assume that you are ensuring that lifetimes are not extended in a manner that violates Rust’s memory model.

validity: bool

🔬This is a nightly-only experimental API. (transmutability #99571)

When true, the compiler assumes that you are ensuring that the source type is actually a valid instance of the destination type.

visibility: bool

🔬This is a nightly-only experimental API. (transmutability #99571)

When true, the compiler assumes that you have ensured that it is safe for you to violate the type and field privacy of the destination type (and sometimes of the source type, too).

Trait Implementations

impl Clone for Assume

fn clone(&self) -> Assume

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Assume

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq<Assume> for Assume

fn eq(&self, other: &Assume) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for Assume

impl Eq for Assume

impl StructuralEq for Assume

impl StructuralPartialEq for Assume