Struct PointeeInfo

pub struct PointeeInfo {
    pub safe: Option<PointerKind>,
    pub size: Size,
    pub align: Align,
}

Encodes extra information we have about a pointer. Note that this information is advisory only, and backends are free to ignore it: if the information is wrong, that can cause UB, but if the information is absent, that must always be okay.

Fields

safe: Option<PointerKind>

If this is None, then this is a raw pointer, so size and alignment are not guaranteed to be reliable.

size: Size

If safe is Some, then the pointer is either null or dereferenceable for this many bytes. On a function argument, “dereferenceable” here means “dereferenceable for the entire duration of this function call”, i.e. it is UB for the memory that this pointer points to to be freed while this function is still running. The size can be zero if the pointer is not dereferenceable.

align: Align

If safe is Some, then the pointer is aligned as indicated.

Trait Implementations

impl Clone for PointeeInfo

fn clone(&self) -> PointeeInfo

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for PointeeInfo

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

Formats the value using the given formatter.

impl Copy for PointeeInfo