pub enum ReifyReason {
FnPtr,
Vtable,
}
Expand description
Describes why a ReifyShim
was created. This is needed to distinguish a ReifyShim created to
adjust for things like #[track_caller]
in a vtable from a ReifyShim
created to produce a
function pointer from a vtable entry.
Currently, this is only used when KCFI is enabled, as only KCFI needs to treat those two
ReifyShim
s differently.
Variants§
FnPtr
The ReifyShim
was created to produce a function pointer. This happens when:
- A vtable entry is directly converted to a function call (e.g. creating a fn ptr from a
method on a
dyn
object). - A function with
#[track_caller]
is converted to a function pointer - If KCFI is enabled, creating a function pointer from a method on a dyn-compatible trait.
This includes the case of converting
::call
-like methods on closure-likes to function pointers.
Vtable
This ReifyShim
was created to populate a vtable. Currently, this happens when a
#[track_caller]
mismatch occurs between the implementation of a method and the method.
This includes the case of ::call
-like methods in closure-likes’ vtables.
Trait Implementations§
Source§impl Clone for ReifyReason
impl Clone for ReifyReason
Source§fn clone(&self) -> ReifyReason
fn clone(&self) -> ReifyReason
1.0.0 · Source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moreSource§impl Debug for ReifyReason
impl Debug for ReifyReason
Source§impl<__D: TyDecoder> Decodable<__D> for ReifyReason
impl<__D: TyDecoder> Decodable<__D> for ReifyReason
Source§impl<__E: TyEncoder> Encodable<__E> for ReifyReason
impl<__E: TyEncoder> Encodable<__E> for ReifyReason
Source§impl Hash for ReifyReason
impl Hash for ReifyReason
Source§impl<'__ctx> HashStable<StableHashingContext<'__ctx>> for ReifyReason
impl<'__ctx> HashStable<StableHashingContext<'__ctx>> for ReifyReason
fn hash_stable( &self, __hcx: &mut StableHashingContext<'__ctx>, __hasher: &mut StableHasher, )
Source§impl<'tcx> Lift<TyCtxt<'tcx>> for ReifyReason
impl<'tcx> Lift<TyCtxt<'tcx>> for ReifyReason
type Lifted = ReifyReason
fn lift_to_interner(self, _: TyCtxt<'tcx>) -> Option<Self>
Source§impl PartialEq for ReifyReason
impl PartialEq for ReifyReason
Source§impl<'tcx> TypeFoldable<TyCtxt<'tcx>> for ReifyReason
impl<'tcx> TypeFoldable<TyCtxt<'tcx>> for ReifyReason
Source§fn try_fold_with<F: FallibleTypeFolder<TyCtxt<'tcx>>>(
self,
_: &mut F,
) -> Result<Self, F::Error>
fn try_fold_with<F: FallibleTypeFolder<TyCtxt<'tcx>>>( self, _: &mut F, ) -> Result<Self, F::Error>
Source§impl<'tcx> TypeVisitable<TyCtxt<'tcx>> for ReifyReason
impl<'tcx> TypeVisitable<TyCtxt<'tcx>> for ReifyReason
Source§fn visit_with<F: TypeVisitor<TyCtxt<'tcx>>>(&self, _: &mut F) -> F::Result
fn visit_with<F: TypeVisitor<TyCtxt<'tcx>>>(&self, _: &mut F) -> F::Result
impl Copy for ReifyReason
impl Eq for ReifyReason
impl StructuralPartialEq for ReifyReason
Auto Trait Implementations§
impl DynSend for ReifyReason
impl DynSync for ReifyReason
impl Freeze for ReifyReason
impl RefUnwindSafe for ReifyReason
impl Send for ReifyReason
impl Sync for ReifyReason
impl Unpin for ReifyReason
impl UnwindSafe for ReifyReason
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impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for Twhere
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fn allocate_from_iter( arena: &'tcx Arena<'tcx>, iter: impl IntoIterator<Item = T>, ) -> &'tcx mut [T]
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fn references_error(&self) -> bool
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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: 1 byte
Size for each variant:
FnPtr
: 0 bytesVtable
: 0 bytes