UnsafeOpKind in rustc_mir_build::check_unsafety - Rust
Description: API documentation for the Rust `UnsafeOpKind` enum in crate `rustc_mir_build`.

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## UnsafeOpKind

# Enum UnsafeOpKind

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    enum UnsafeOpKind {
    Show 13 variants    CallToUnsafeFunction(Option<DefId>),
        UseOfInlineAssembly,
        InitializingTypeWithUnsafeField,
        UseOfMutableStatic,
        UseOfExternStatic,
        UseOfUnsafeField,
        DerefOfRawPointer,
        AccessToUnionField,
        MutationOfLayoutConstrainedField,
        BorrowOfLayoutConstrainedField,
        CallToFunctionWith {
            function: DefId,
            missing: Vec<Symbol>,
            build_enabled: Vec<Symbol>,
        },
        UnsafeBinderCast,
        CallDropExplicitly(DefId),
    }

## Variants§

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### CallToUnsafeFunction(Option<DefId>)

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### UseOfInlineAssembly

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### InitializingTypeWithUnsafeField

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### UseOfMutableStatic

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### UseOfExternStatic

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### UseOfUnsafeField

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### DerefOfRawPointer

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### AccessToUnionField

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### MutationOfLayoutConstrainedField

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### BorrowOfLayoutConstrainedField

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### CallToFunctionWith

#### Fields

§`function: DefId`
§`missing: Vec<Symbol>`

Target features enabled in callee’s `#[target_feature]` but missing in caller’s `#[target_feature]`.

§`build_enabled: Vec<Symbol>`

Target features in `missing` that are enabled at compile time (e.g., with `-C target-feature`).

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### UnsafeBinderCast

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### CallDropExplicitly(DefId)

Calling `Drop::drop` or `Drop::pin_drop` explicitly.

## Implementations§

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### impl UnsafeOpKind

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#### fn emit_unsafe_op_in_unsafe_fn_lint( &self, tcx: TyCtxt<'_>, hir_id: HirId, span: Span, suggest_unsafe_block: bool, )

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#### fn emit_requires_unsafe_err( &self, tcx: TyCtxt<'_>, span: Span, hir_context: HirId, unsafe_op_in_unsafe_fn_allowed: bool, )

## Trait Implementations§

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### impl Clone for UnsafeOpKind

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#### fn clone(&self) -> UnsafeOpKind

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from `source`. Read more
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### impl PartialEq for UnsafeOpKind

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

Tests for `self` and `other` values to be equal, and is used by `==`.
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#### fn ne(&self, other: &Rhs) -> bool

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

## Auto Trait Implementations§

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### impl DynSend for UnsafeOpKind

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### impl DynSync for UnsafeOpKind

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### impl Freeze for UnsafeOpKind

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### impl RefUnwindSafe for UnsafeOpKind

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### impl Send for UnsafeOpKind

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### impl Sync for UnsafeOpKind

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### impl Unpin for UnsafeOpKind

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### impl UnsafeUnpin for UnsafeOpKind

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### impl UnwindSafe for UnsafeOpKind

## Blanket Implementations§

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### impl<T> Aligned for T

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#### const ALIGN: Alignment

Alignment of `Self`.
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### impl<T> Any for T
where T: 'static + ?Sized,

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#### fn type_id(&self) -> TypeId

Gets the `TypeId` of `self`. Read more
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### impl<T> AnyEq for T
where T: Any + PartialEq,

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#### fn equals(&self, other: &(dyn Any + 'static)) -> bool

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#### fn as_any(&self) -> &(dyn Any + 'static)

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### impl<T> Borrow<T> for T
where T: ?Sized,

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#### fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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### impl<T> BorrowMut<T> for T
where T: ?Sized,

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#### fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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### impl<T> CloneToUninit for T
where T: Clone,

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#### unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (`clone_to_uninit`)
Performs copy-assignment from `self` to `dest`. Read more
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### impl<T, R> CollectAndApply<T, R> for T

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#### fn collect_and_apply<I, F>(iter: I, f: F) -> R
where I: Iterator<Item = T>, F: FnOnce(&[T]) -> R,

Equivalent to `f(&iter.collect::<Vec<_>>())`.

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#### type Output = R

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### impl<T> DynClone for T
where T: Clone,

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#### fn __clone_box(&self, _: Private) -> *mut ()

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### impl<T> ErasedDestructor for T
where T: 'static,

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### impl<T> From<T> for T

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#### fn from(t: T) -> T

Returns the argument unchanged.

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### impl<T> Instrument for T

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#### fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided `Span`, returning an `Instrumented` wrapper. Read more
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#### fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current `Span`, returning an `Instrumented` wrapper. Read more
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### impl<T, U> Into<U> for T
where U: From<T>,

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#### fn into(self) -> U

Calls `U::from(self)`.

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

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### impl<T> IntoEither for T

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#### fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts `self` into a `Left` variant of `Either<Self, Self>` if `into_left` is `true`. Converts `self` into a `Right` variant of `Either<Self, Self>` otherwise. Read more
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#### fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts `self` into a `Left` variant of `Either<Self, Self>` if `into_left(&self)` returns `true`. Converts `self` into a `Right` variant of `Either<Self, Self>` otherwise. Read more
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### impl<K> IntoQueryKey<K> for K

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#### fn into_query_key(self) -> K

Argument conversion from `Self` to `K`. This should always be a very cheap conversion, e.g. `LocalDefId::to_def_id`.
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### impl<T> MaybeResult<T> for T

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#### type Error = !

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#### fn from(_: Result<T, <T as MaybeResult<T>>::Error>) -> T

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#### fn to_result(self) -> Result<T, <T as MaybeResult<T>>::Error>

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### impl<T> Pointable for T

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#### const ALIGN: usize

The alignment of pointer.
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#### type Init = T

The type for initializers.
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#### unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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#### unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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#### unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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#### unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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### impl<T> Same for T

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#### type Output = T

Should always be `Self`
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### impl<T> ToOwned for T
where T: Clone,

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#### type Owned = T

The resulting type after obtaining ownership.
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#### fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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#### fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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### impl<T, U> TryFrom<U> for T
where U: Into<T>,

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#### type Error = Infallible

The type returned in the event of a conversion error.
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#### fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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### impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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#### type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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#### fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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### impl<I, T, U> Upcast<I, U> for T
where U: UpcastFrom<I, T>,

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#### fn upcast(self, interner: I) -> U

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### impl<I, T> UpcastFrom<I, T> for T

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#### fn upcast_from(from: T, _tcx: I) -> T

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### impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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#### fn vzip(self) -> V

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### impl<T> WithSubscriber for T

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#### fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided `Subscriber` to this type, returning a `WithDispatch` wrapper. Read more
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#### fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default `Subscriber` to this type, returning a `WithDispatch` wrapper. Read more

## Layout§

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain `repr(...)` attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 56 bytes

Size for each variant:

- `CallToUnsafeFunction`: 16 bytes
- `UseOfInlineAssembly`: 0 bytes
- `InitializingTypeWithUnsafeField`: 0 bytes
- `UseOfMutableStatic`: 0 bytes
- `UseOfExternStatic`: 0 bytes
- `UseOfUnsafeField`: 0 bytes
- `DerefOfRawPointer`: 0 bytes
- `AccessToUnionField`: 0 bytes
- `MutationOfLayoutConstrainedField`: 0 bytes
- `BorrowOfLayoutConstrainedField`: 0 bytes
- `CallToFunctionWith`: 56 bytes
- `UnsafeBinderCast`: 0 bytes
- `CallDropExplicitly`: 16 bytes