Enum rustc_middle::mir::interpret::UnsupportedOpInfo

source ·

pub enum UnsupportedOpInfo {
    Unsupported(String),
    UnsizedLocal,
    OverwritePartialPointer(Pointer<AllocId>),
    ReadPartialPointer(Pointer<AllocId>),
    ReadPointerAsInt(Option<(AllocId, BadBytesAccess)>),
    ThreadLocalStatic(DefId),
    ReadExternStatic(DefId),
}

Expand description

Error information for when the program did something that might (or might not) be correct to do according to the Rust spec, but due to limitations in the interpreter, the operation could not be carried out. These limitations can differ between CTFE and the Miri engine, e.g., CTFE does not support dereferencing pointers at integral addresses.

Variants§

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Unsupported(String)

Free-form case. Only for errors that are never caught!

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UnsizedLocal

Unsized local variables.

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OverwritePartialPointer(Pointer<AllocId>)

Overwriting parts of a pointer; without knowing absolute addresses, the resulting state cannot be represented by the CTFE interpreter.

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ReadPartialPointer(Pointer<AllocId>)

Attempting to read or copy parts of a pointer to somewhere else; without knowing absolute addresses, the resulting state cannot be represented by the CTFE interpreter.

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ReadPointerAsInt(Option<(AllocId, BadBytesAccess)>)

Encountered a pointer where we needed an integer.

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ThreadLocalStatic(DefId)

Accessing thread local statics

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ReadExternStatic(DefId)

Accessing an unsupported extern static.

Enum rustc_middle::mir::interpret::UnsupportedOpInfo

Variants§

Unsupported(String)

UnsizedLocal

OverwritePartialPointer(Pointer<AllocId>)

ReadPartialPointer(Pointer<AllocId>)

ReadPointerAsInt(Option<(AllocId, BadBytesAccess)>)

ThreadLocalStatic(DefId)

ReadExternStatic(DefId)

Trait Implementations§

impl Debug for UnsupportedOpInfo

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

Auto Trait Implementations§

impl RefUnwindSafe for UnsupportedOpInfo

impl Send for UnsupportedOpInfo

impl Sync for UnsupportedOpInfo

impl Unpin for UnsupportedOpInfo

impl UnwindSafe for UnsupportedOpInfo

Blanket Implementations§

impl<T> Aligned for T

const ALIGN: Alignment = _

impl<T> Any for Twhere T: 'static + ?Sized,

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for Twhere T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for Twhere T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<T, R> CollectAndApply<T, R> for T

fn collect_and_apply<I, F>(iter: I, f: F) -> Rwhere I: Iterator<Item = T>, F: FnOnce(&[T]) -> R,

type Output = R

impl<T> From<T> for T

fn from(t: T) -> T

impl<T, U> Into<U> for Twhere U: From<T>,

fn into(self) -> U

impl<P> IntoQueryParam<P> for P

fn into_query_param(self) -> P

impl<T> MaybeResult<T> for T

type Error = !

fn from(_: Result<T, <T as MaybeResult<T>>::Error>) -> T

fn to_result(self) -> Result<T, <T as MaybeResult<T>>::Error>

impl<'tcx, T> ToPredicate<'tcx, T> for T

fn to_predicate(self, _tcx: TyCtxt<'tcx>) -> T

impl<T, U> TryFrom<U> for Twhere U: Into<T>,

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

impl<Tcx, T> Value<Tcx> for Twhere Tcx: DepContext,

default fn from_cycle_error( tcx: Tcx, cycle: &[QueryInfo], _guar: ErrorGuaranteed ) -> T

Layout§