Enum rustc_infer::infer::lexical_region_resolve::RegionResolutionError

pub enum RegionResolutionError<'tcx> {
    ConcreteFailure(SubregionOrigin<'tcx>, Region<'tcx>, Region<'tcx>),
    GenericBoundFailure(SubregionOrigin<'tcx>, GenericKind<'tcx>, Region<'tcx>),
    SubSupConflict(RegionVid, RegionVariableOrigin, SubregionOrigin<'tcx>, Region<'tcx>, SubregionOrigin<'tcx>, Region<'tcx>),
    UpperBoundUniverseConflict(RegionVid, RegionVariableOrigin, UniverseIndex, SubregionOrigin<'tcx>, Region<'tcx>),
}

Variants

ConcreteFailure(SubregionOrigin<'tcx>, Region<'tcx>, Region<'tcx>)

ConcreteFailure(o, a, b):

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

Tuple Fields of ConcreteFailure

0: SubregionOrigin<'tcx>1: Region<'tcx>2: Region<'tcx>

GenericBoundFailure(SubregionOrigin<'tcx>, GenericKind<'tcx>, Region<'tcx>)

`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).

Tuple Fields of GenericBoundFailure

0: SubregionOrigin<'tcx>1: GenericKind<'tcx>2: Region<'tcx>

SubSupConflict(RegionVid, RegionVariableOrigin, SubregionOrigin<'tcx>, Region<'tcx>, SubregionOrigin<'tcx>, Region<'tcx>)

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.

Tuple Fields of SubSupConflict

0: RegionVid1: RegionVariableOrigin2: SubregionOrigin<'tcx>3: Region<'tcx>4: SubregionOrigin<'tcx>5: Region<'tcx>

UpperBoundUniverseConflict(RegionVid, RegionVariableOrigin, UniverseIndex, SubregionOrigin<'tcx>, Region<'tcx>)

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

Tuple Fields of UpperBoundUniverseConflict

0: RegionVid1: RegionVariableOrigin2: UniverseIndex3: SubregionOrigin<'tcx>4: Region<'tcx>

Trait Implementations

impl<'tcx> Clone for RegionResolutionError<'tcx>

fn clone(&self) -> RegionResolutionError<'tcx>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'tcx> Debug for RegionResolutionError<'tcx>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

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: 144 bytes

Size for each variant:

• ConcreteFailure: 52 bytes
• GenericBoundFailure: 68 bytes
• SubSupConflict: 140 bytes
• UpperBoundUniverseConflict: 108 bytes