Enum rustc_middle::mir::syntax::UnwindAction

pub enum UnwindAction {
    Continue,
    Unreachable,
    Terminate(UnwindTerminateReason),
    Cleanup(BasicBlock),
}

Action to be taken when a stack unwind happens.

Variants

Continue

No action is to be taken. Continue unwinding.

This is similar to Cleanup(bb) where bb does nothing but Resume, but they are not equivalent, as presence of Cleanup(_) will make a frame non-POF.

Unreachable

Triggers undefined behavior if unwind happens.

Terminate(UnwindTerminateReason)

Terminates the execution if unwind happens.

Depending on the platform and situation this may cause a non-unwindable panic or abort.

Cleanup(BasicBlock)

Cleanups to be done.

Implementations

impl UnwindAction

fn cleanup_block(self) -> Option<BasicBlock>

Trait Implementations

impl Clone for UnwindAction

fn clone(&self) -> UnwindAction

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for UnwindAction

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

Formats the value using the given formatter.

impl<'tcx, __D: TyDecoder<I = TyCtxt<'tcx>>> Decodable<__D> for UnwindAction

fn decode(__decoder: &mut __D) -> Self

impl<'tcx, __E: TyEncoder<I = TyCtxt<'tcx>>> Encodable<__E> for UnwindAction

fn encode(&self, __encoder: &mut __E)

impl Hash for UnwindAction

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<'__ctx> HashStable<StableHashingContext<'__ctx>> for UnwindAction

fn hash_stable( &self, __hcx: &mut StableHashingContext<'__ctx>, __hasher: &mut StableHasher )

impl PartialEq<UnwindAction> for UnwindAction

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

This method tests for self and other values to be equal, and is used by ==.

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

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

impl<'tcx> TypeFoldable<TyCtxt<'tcx>> for UnwindAction

fn try_fold_with<__F: FallibleTypeFolder<TyCtxt<'tcx>>>( self, __folder: &mut __F ) -> Result<Self, __F::Error>

The entry point for folding. To fold a value t with a folder f call: t.try_fold_with(f).

fn fold_with<F>(self, folder: &mut F) -> Selfwhere F: TypeFolder<I>,

A convenient alternative to try_fold_with for use with infallible folders. Do not override this method, to ensure coherence with try_fold_with.

impl<'tcx> TypeVisitable<TyCtxt<'tcx>> for UnwindAction

fn visit_with<__V: TypeVisitor<TyCtxt<'tcx>>>( &self, __visitor: &mut __V ) -> ControlFlow<__V::BreakTy>

The entry point for visiting. To visit a value t with a visitor v call: t.visit_with(v).

impl Copy for UnwindAction

impl Eq for UnwindAction

impl StructuralEq for UnwindAction

impl StructuralPartialEq for UnwindAction

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: 8 bytes

Size for each variant:

• Continue: 0 bytes
• Unreachable: 0 bytes
• Terminate: 1 byte
• Cleanup: 7 bytes