Struct Custom 

#[doc(hidden)]
#[repr(align(4))]
pub struct Custom {
    kind: ErrorKind,
    error: NonNull<dyn Error + Send + Sync>,
    error_drop: unsafe fn(NonNull<dyn Error + Send + Sync>),
    outer_drop: unsafe fn(NonNull<Self>),
}

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

A user-created allocated error.

Fields

kind: ErrorKind

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

error: NonNull<dyn Error + Send + Sync>

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

Box<dyn Error + ...> without alloc.

error_drop: unsafe fn(NonNull<dyn Error + Send + Sync>)

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

outer_drop: unsafe fn(NonNull<Self>)

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

Call to drop a pointer to Custom.

Implementations

impl Custom

pub unsafe fn from_raw( kind: ErrorKind, error: NonNull<dyn Error + Send + Sync>, error_drop: unsafe fn(NonNull<dyn Error + Send + Sync>), outer_drop: unsafe fn(NonNull<Self>), ) -> Custom

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

Safety

• error must be valid for up to a static lifetime, and own its pointee.
• error_drop must be safe to call for the pointer error exactly once.
• outer_drop must be safe to call on a pointer to this instance of Custom (the pointer is likely stored within a CustomOwner).

pub fn into_raw(self) -> NonNull<dyn Error + Send + Sync>

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

fn error_ref(&self) -> &(dyn Error + Send + Sync + 'static)

🔬This is a nightly-only experimental API. (core_io #154046)

fn error_mut(&mut self) -> &mut (dyn Error + Send + Sync + 'static)

🔬This is a nightly-only experimental API. (core_io #154046)

Trait Implementations

impl Debug for Custom

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

Formats the value using the given formatter.

impl Drop for Custom

fn drop(&mut self)

Executes the destructor for this type.

fn pin_drop(self: Pin<&mut Self>)

🔬This is a nightly-only experimental API. (pin_ergonomics #130494)

Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned.

impl Send for Custom

impl Sync for Custom