Struct PtrUninit 

pub struct PtrUninit { /* private fields */ }

A type-erased pointer to uninitialized memory.

Wraps PtrMut but represents uninitialized memory. No lifetime parameter.

Implementations

impl PtrUninit

pub fn new<T: ?Sized>(ptr: *mut T) -> Self

Create a new uninit pointer from a mutable pointer.

pub const fn new_sized<T: Sized>(ptr: *mut T) -> Self

Create a new uninit pointer from a pointer to a sized type. This is const because sized types use thin pointers.

pub fn from_maybe_uninit<T>(borrow: &mut MaybeUninit<T>) -> Self

Creates from a reference to a MaybeUninit.

pub fn as_mut_byte_ptr(self) -> *mut u8

Returns the underlying raw pointer as a mutable byte pointer.

Panics

Panics if this is a wide pointer.

pub fn as_byte_ptr(self) -> *const u8

Returns the underlying raw pointer as a const byte pointer.

Panics

Panics if this is a wide pointer.

pub const unsafe fn assume_init(self) -> PtrMut

Assumes the pointer is initialized and returns a PtrMut.

Safety

The memory must actually be initialized.

pub unsafe fn put<T>(self, value: T) -> PtrMut

Write a value to this location and return an initialized pointer.

Safety

The pointer must be properly aligned and point to allocated memory.

pub unsafe fn copy_from( self, src: PtrConst, shape: &'static Shape, ) -> Result<PtrMut, UnsizedError>

Copies memory from a source pointer into this location.

Safety

• The source pointer must be valid for reads
• This pointer must be valid for writes and properly aligned
• The regions may not overlap

pub unsafe fn field_uninit(self, offset: usize) -> PtrUninit

Returns a pointer with the given offset added (still uninit).

Safety

Offset must be within bounds of the allocated memory.

pub unsafe fn field_init(self, offset: usize) -> PtrMut

Returns a pointer with the given offset added, assuming it’s initialized.

Safety

• Offset must be within bounds
• The memory at that offset must be initialized

Trait Implementations

impl Clone for PtrUninit

fn clone(&self) -> PtrUninit

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PtrUninit

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

Formats the value using the given formatter.

impl From<PtrMut> for PtrUninit

fn from(p: PtrMut) -> Self

Converts to this type from the input type.

impl PartialEq for PtrUninit

fn eq(&self, other: &PtrUninit) -> 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 Copy for PtrUninit

impl Eq for PtrUninit

impl StructuralPartialEq for PtrUninit