pub struct Assume {
    pub alignment: bool,
    pub lifetimes: bool,
    pub validity: bool,
    pub visibility: bool,
}
🔬 This is a nightly-only experimental API. (transmutability #99571)
Expand description

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

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

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

This method tests for !=.

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

The resulting type after obtaining ownership.

Creates owned data from borrowed data, usually by cloning. Read more

Uses borrowed data to replace owned data, usually by cloning. Read more

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.