Struct rustc_const_eval::transform::check_consts::qualifs::HasMutInterior
source · [−]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
sourceimpl Qualif for HasMutInterior
impl Qualif for HasMutInterior
sourceconst ANALYSIS_NAME: &'static str
const ANALYSIS_NAME: &'static str
The name of the file used to debug the dataflow analysis that computes this qualif.
sourcefn in_qualifs(qualifs: &ConstQualifs) -> bool
fn in_qualifs(qualifs: &ConstQualifs) -> bool
Extracts the field of ConstQualifs that corresponds to this Qualif.
sourcefn in_any_value_of_ty<'tcx>(cx: &ConstCx<'_, 'tcx>, ty: Ty<'tcx>) -> bool
fn in_any_value_of_ty<'tcx>(cx: &ConstCx<'_, 'tcx>, ty: Ty<'tcx>) -> bool
Returns true if any value of the given type could possibly have this Qualif. Read more
sourcefn in_adt_inherently<'tcx>(
cx: &ConstCx<'_, 'tcx>,
adt: &'tcx AdtDef,
_: SubstsRef<'tcx>
) -> bool
fn in_adt_inherently<'tcx>(
cx: &ConstCx<'_, 'tcx>,
adt: &'tcx AdtDef,
_: SubstsRef<'tcx>
) -> bool
Returns true if this Qualif is inherent to the given struct or enum. Read more
sourceconst IS_CLEARED_ON_MOVE: bool
const IS_CLEARED_ON_MOVE: bool
Whether this Qualif is cleared when a local is moved from.
sourceconst ALLOW_PROMOTED: bool
const ALLOW_PROMOTED: bool
Whether this Qualif might be evaluated after the promotion and can encounter a promoted.
Auto Trait Implementations
impl RefUnwindSafe for HasMutInterior
impl Send for HasMutInterior
impl Sync for HasMutInterior
impl Unpin for HasMutInterior
impl UnwindSafe for HasMutInterior
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcepub fn borrow_mut(&mut self) -> &mut T
pub fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. 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: 0 bytes