Struct rustc_const_eval::check_consts::qualifs::NeedsNonConstDrop

pub struct NeedsNonConstDrop;

Constant containing an ADT that implements non-const Drop. This must be ruled out because we cannot run Drop during compile-time.

Trait Implementations

impl Qualif for NeedsNonConstDrop

const ANALYSIS_NAME: &'static str = "flow_needs_nonconst_drop"

The name of the file used to debug the dataflow analysis that computes this qualif.

const IS_CLEARED_ON_MOVE: bool = true

Whether this Qualif is cleared when a local is moved from.

const ALLOW_PROMOTED: bool = true

Whether this Qualif might be evaluated after the promotion and can encounter a promoted.

fn in_qualifs(qualifs: &ConstQualifs) -> bool

Extracts the field of ConstQualifs that corresponds to this Qualif.

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.

fn in_adt_inherently<'tcx>( cx: &ConstCx<'_, 'tcx>, adt: AdtDef<'tcx>, _: GenericArgsRef<'tcx>, ) -> bool

Returns true if this Qualif is inherent to the given struct or enum.

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.

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