pub struct HasMutInterior;Expand description
Constant containing interior mutability (UnsafeCell<T>).
This must be ruled out to make sure that evaluating the constant at compile-time
and at any point during the run-time would produce the same result. In particular,
promotion of temporaries must not change program behavior; if the promoted could be
written to, that would be a problem.
Trait Implementations§
source§impl Qualif for HasMutInterior
impl Qualif for HasMutInterior
source§const ANALYSIS_NAME: &'static str = "flow_has_mut_interior"
const ANALYSIS_NAME: &'static str = "flow_has_mut_interior"
The name of the file used to debug the dataflow analysis that computes this qualif.
source§fn in_qualifs(qualifs: &ConstQualifs) -> bool
fn in_qualifs(qualifs: &ConstQualifs) -> bool
Extracts the field of
ConstQualifs that corresponds to this Qualif.source§fn in_adt_inherently<'tcx>(
_cx: &ConstCx<'_, 'tcx>,
adt: AdtDef<'tcx>,
_: GenericArgsRef<'tcx>,
) -> bool
fn in_adt_inherently<'tcx>( _cx: &ConstCx<'_, 'tcx>, adt: AdtDef<'tcx>, _: GenericArgsRef<'tcx>, ) -> bool
source§fn deref_structural<'tcx>(_cx: &ConstCx<'_, 'tcx>) -> bool
fn deref_structural<'tcx>(_cx: &ConstCx<'_, 'tcx>) -> bool
Returns
true if this Qualif behaves sructurally for pointers and references:
the pointer/reference qualifies if and only if the pointee qualifies. Read moresource§const IS_CLEARED_ON_MOVE: bool = false
const IS_CLEARED_ON_MOVE: bool = false
Whether this
Qualif is cleared when a local is moved from.source§const ALLOW_PROMOTED: bool = false
const ALLOW_PROMOTED: bool = false
Whether this
Qualif might be evaluated after the promotion and can encounter a promoted.Auto Trait Implementations§
impl Freeze for HasMutInterior
impl RefUnwindSafe for HasMutInterior
impl Send for HasMutInterior
impl Sync for HasMutInterior
impl Unpin for HasMutInterior
impl UnwindSafe for HasMutInterior
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
source§impl<T, R> CollectAndApply<T, R> for T
impl<T, R> CollectAndApply<T, R> for T
source§impl<T> Filterable for T
impl<T> Filterable for T
source§fn filterable(
self,
filter_name: &'static str,
) -> RequestFilterDataProvider<T, fn(_: DataRequest<'_>) -> bool>
fn filterable( self, filter_name: &'static str, ) -> RequestFilterDataProvider<T, fn(_: DataRequest<'_>) -> bool>
Creates a filterable data provider with the given name for debugging. Read more
source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
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 moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
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 moresource§impl<P> IntoQueryParam<P> for P
impl<P> IntoQueryParam<P> for P
fn into_query_param(self) -> P
source§impl<T> MaybeResult<T> for T
impl<T> MaybeResult<T> for T
source§impl<I, T, U> Upcast<I, U> for Twhere
U: UpcastFrom<I, T>,
impl<I, T, U> Upcast<I, U> for Twhere
U: UpcastFrom<I, T>,
source§impl<I, T> UpcastFrom<I, T> for T
impl<I, T> UpcastFrom<I, T> for T
fn upcast_from(from: T, _tcx: I) -> T
source§impl<Tcx, T> Value<Tcx> for Twhere
Tcx: DepContext,
impl<Tcx, T> Value<Tcx> for Twhere
Tcx: DepContext,
default fn from_cycle_error( tcx: Tcx, cycle_error: &CycleError, _guar: ErrorGuaranteed, ) -> T
source§impl<T> WithSubscriber for T
impl<T> WithSubscriber for T
source§fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
source§fn with_current_subscriber(self) -> WithDispatch<Self>
fn with_current_subscriber(self) -> WithDispatch<Self>
impl<'a, T> Captures<'a> for Twhere
T: ?Sized,
impl<T> ErasedDestructor for Twhere
T: 'static,
impl<T> MaybeSendSync for T
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: 0 bytes