Enum rustc_trait_selection::infer::RegionResolutionError[−][src]

pub enum RegionResolutionError<'tcx> {
    ConcreteFailure(SubregionOrigin, &RegionKind, &RegionKind),
    GenericBoundFailure(SubregionOrigin, GenericKind, &RegionKind),
    SubSupConflict(RegionVid, RegionVariableOrigin, SubregionOrigin, &RegionKind, SubregionOrigin, &RegionKind, Vec<Span, Global>),
    UpperBoundUniverseConflict(RegionVid, RegionVariableOrigin, UniverseIndex, SubregionOrigin, &RegionKind),
}

Variants

ConcreteFailure(SubregionOrigin, &RegionKind, &RegionKind)

Tuple Fields

0: SubregionOrigin
1: &RegionKind
2: &RegionKind

ConcreteFailure(o, a, b):

o requires that a <= b, but this does not hold

GenericBoundFailure(SubregionOrigin, GenericKind, &RegionKind)

Tuple Fields

0: SubregionOrigin
1: GenericKind
2: &RegionKind

`GenericBoundFailure(p, s, a)

The parameter/associated-type p must be known to outlive the lifetime a (but none of the known bounds are sufficient).

SubSupConflict(RegionVid, RegionVariableOrigin, SubregionOrigin, &RegionKind, SubregionOrigin, &RegionKind, Vec<Span, Global>)

SubSupConflict(v, v_origin, sub_origin, sub_r, sup_origin, sup_r):

Could not infer a value for v (which has origin v_origin) because sub_r <= v (due to sub_origin) but v <= sup_r (due to sup_origin) and sub_r <= sup_r does not hold.

UpperBoundUniverseConflict(RegionVid, RegionVariableOrigin, UniverseIndex, SubregionOrigin, &RegionKind)

Indicates a 'b: 'a constraint where 'a is in a universe that cannot name the placeholder 'b.

Auto Trait Implementations

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The type returned in the event of a conversion error.

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The type returned in the event of a conversion error.

Performs the conversion.

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: 152 bytes

Size for each variant:

  • ConcreteFailure: 52 bytes
  • GenericBoundFailure: 68 bytes
  • SubSupConflict: 148 bytes
  • UpperBoundUniverseConflict: 84 bytes