pub(crate) enum RegionErrorKind<'tcx> {
TypeTestError {
type_test: TypeTest<'tcx>,
},
UnexpectedHiddenRegion {
span: Span,
hidden_ty: Ty<'tcx>,
key: OpaqueTypeKey<'tcx>,
member_region: Region<'tcx>,
},
BoundUniversalRegionError {
longer_fr: RegionVid,
error_element: RegionElement,
placeholder: PlaceholderRegion,
},
RegionError {
fr_origin: NllRegionVariableOrigin,
longer_fr: RegionVid,
shorter_fr: RegionVid,
is_reported: bool,
},
}
Variants§
TypeTestError
A generic bound failure for a type test (T: 'a
).
UnexpectedHiddenRegion
An unexpected hidden region for an opaque type.
BoundUniversalRegionError
Fields
§
error_element: RegionElement
The region element that erroneously must be outlived by longer_fr
.
§
placeholder: PlaceholderRegion
The placeholder region.
Higher-ranked subtyping error.
RegionError
Fields
§
fr_origin: NllRegionVariableOrigin
The origin of the region.
Any other lifetime error.
Trait Implementations§
source§impl<'tcx> Clone for RegionErrorKind<'tcx>
impl<'tcx> Clone for RegionErrorKind<'tcx>
source§fn clone(&self) -> RegionErrorKind<'tcx>
fn clone(&self) -> RegionErrorKind<'tcx>
Returns a copy of the value. Read more
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source
. Read moreAuto Trait Implementations§
impl<'tcx> !RefUnwindSafe for RegionErrorKind<'tcx>
impl<'tcx> !Send for RegionErrorKind<'tcx>
impl<'tcx> !Sync for RegionErrorKind<'tcx>
impl<'tcx> Unpin for RegionErrorKind<'tcx>
impl<'tcx> !UnwindSafe for RegionErrorKind<'tcx>
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
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: 64 bytes
Size for each variant:
TypeTestError
: 64 bytesUnexpectedHiddenRegion
: 48 bytesBoundUniversalRegionError
: 56 bytesRegionError
: 40 bytes