Struct AllocationError 

#[repr(C)]
pub struct AllocationError();

A generic allocation error.

Implementations

impl AllocationError

where (): IStable,

pub const fn has_optimal_layout() -> bool

Returns true if the layout for AllocationError is smaller or equal to that Rust would have generated for it.

Trait Implementations

impl Clone for AllocationError

fn clone(&self) -> AllocationError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AllocationError

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

Formats the value using the given formatter.

impl Default for AllocationError

fn default() -> AllocationError

Returns the “default value” for a type.

impl Display for AllocationError

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

Formats the value using the given formatter.

impl Eq for AllocationError

impl Error for AllocationError

Available on crate feature std only.

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl Hash for AllocationError

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl IStable for AllocationError

where (): IStable,

const REPORT: &'static TypeReport

A compile-time generated report of the fields of the type, allowing for compatibility inspection.

const ID: u64

A stable (and ideally unique) identifier for the type. Often generated using crate::report::gen_id, but can be manually set.

type ForbiddenValues = <() as IStable>::ForbiddenValues

The values that the annotated type cannot occupy.

type UnusedBits = <() as IStable>::UnusedBits

The padding bits in the annotated types

type Size = <() as IStable>::Size

The size of the annotated type in bytes.

type Align = <() as IStable>::Align

The alignment of the annotated type in bytes.

type HasExactlyOneNiche = <() as IStable>::HasExactlyOneNiche

Allows the detection of whether or not core::option::Options are stable:

type ContainsIndirections = <() as IStable>::ContainsIndirections

Whether or not the type contains indirections (pointers, indices in independent data-structures…)

fn size() -> usize

Returns the size of the type.

fn align() -> usize

Returns the alignment of the type.

unsafe fn is_invalid(ptr: *const u8) -> bool

Returns true if ptr points to memory that cannot be a valid value of Self.

impl PartialEq for AllocationError

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl StructuralPartialEq for AllocationError