pub enum UndefinedBehaviorInfo<'tcx> {
Show 33 variants Ub(String), Custom(CustomSubdiagnostic<'tcx>), ValidationError(ValidationErrorInfo<'tcx>), Unreachable, BoundsCheckFailed { len: u64, index: u64, }, DivisionByZero, RemainderByZero, DivisionOverflow, RemainderOverflow, PointerArithOverflow, InvalidMeta(InvalidMetaKind), UnterminatedCString(Pointer<AllocId>), PointerUseAfterFree(AllocId, CheckInAllocMsg), PointerOutOfBounds { alloc_id: AllocId, alloc_size: Size, ptr_offset: i64, ptr_size: Size, msg: CheckInAllocMsg, }, DanglingIntPointer(u64, CheckInAllocMsg), AlignmentCheckFailed(Misalignment, CheckAlignMsg), WriteToReadOnly(AllocId), DerefFunctionPointer(AllocId), DerefVTablePointer(AllocId), InvalidBool(u8), InvalidChar(u32), InvalidTag(Scalar<AllocId>), InvalidFunctionPointer(Pointer<AllocId>), InvalidVTablePointer(Pointer<AllocId>), InvalidStr(Utf8Error), InvalidUninitBytes(Option<(AllocId, BadBytesAccess)>), DeadLocal, ScalarSizeMismatch(ScalarSizeMismatch), UninhabitedEnumVariantWritten(VariantIdx), UninhabitedEnumVariantRead(VariantIdx), InvalidNichedEnumVariantWritten { enum_ty: Ty<'tcx>, }, AbiMismatchArgument { caller_ty: Ty<'tcx>, callee_ty: Ty<'tcx>, }, AbiMismatchReturn { caller_ty: Ty<'tcx>, callee_ty: Ty<'tcx>, },
}
Expand description

Error information for when the program caused Undefined Behavior.

Variants§

§

Ub(String)

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

§

Custom(CustomSubdiagnostic<'tcx>)

A custom (free-form) fluent-translated error, created by err_ub_custom!.

§

ValidationError(ValidationErrorInfo<'tcx>)

Validation error.

§

Unreachable

Unreachable code was executed.

§

BoundsCheckFailed

Fields

§len: u64
§index: u64

A slice/array index projection went out-of-bounds.

§

DivisionByZero

Something was divided by 0 (x / 0).

§

RemainderByZero

Something was “remainded” by 0 (x % 0).

§

DivisionOverflow

Signed division overflowed (INT_MIN / -1).

§

RemainderOverflow

Signed remainder overflowed (INT_MIN % -1).

§

PointerArithOverflow

Overflowing inbounds pointer arithmetic.

§

InvalidMeta(InvalidMetaKind)

Invalid metadata in a wide pointer

§

UnterminatedCString(Pointer<AllocId>)

Reading a C string that does not end within its allocation.

§

PointerUseAfterFree(AllocId, CheckInAllocMsg)

Using a pointer after it got freed.

§

PointerOutOfBounds

Fields

§alloc_id: AllocId
§alloc_size: Size
§ptr_offset: i64
§ptr_size: Size

Used a pointer outside the bounds it is valid for. (If ptr_size > 0, determines the size of the memory range that was expected to be in-bounds.)

§

DanglingIntPointer(u64, CheckInAllocMsg)

Using an integer as a pointer in the wrong way.

§

AlignmentCheckFailed(Misalignment, CheckAlignMsg)

Used a pointer with bad alignment.

§

WriteToReadOnly(AllocId)

Writing to read-only memory.

§

DerefFunctionPointer(AllocId)

Trying to access the data behind a function pointer.

§

DerefVTablePointer(AllocId)

Trying to access the data behind a vtable pointer.

§

InvalidBool(u8)

Using a non-boolean u8 as bool.

§

InvalidChar(u32)

Using a non-character u32 as character.

§

InvalidTag(Scalar<AllocId>)

The tag of an enum does not encode an actual discriminant.

§

InvalidFunctionPointer(Pointer<AllocId>)

Using a pointer-not-to-a-function as function pointer.

§

InvalidVTablePointer(Pointer<AllocId>)

Using a pointer-not-to-a-vtable as vtable pointer.

§

InvalidStr(Utf8Error)

Using a string that is not valid UTF-8,

§

InvalidUninitBytes(Option<(AllocId, BadBytesAccess)>)

Using uninitialized data where it is not allowed.

§

DeadLocal

Working with a local that is not currently live.

§

ScalarSizeMismatch(ScalarSizeMismatch)

Data size is not equal to target size.

§

UninhabitedEnumVariantWritten(VariantIdx)

A discriminant of an uninhabited enum variant is written.

§

UninhabitedEnumVariantRead(VariantIdx)

An uninhabited enum variant is projected.

§

InvalidNichedEnumVariantWritten

Fields

§enum_ty: Ty<'tcx>

Trying to set discriminant to the niched variant, but the value does not match.

§

AbiMismatchArgument

Fields

§caller_ty: Ty<'tcx>
§callee_ty: Ty<'tcx>

ABI-incompatible argument types.

§

AbiMismatchReturn

Fields

§caller_ty: Ty<'tcx>
§callee_ty: Ty<'tcx>

ABI-incompatible return types.

Trait Implementations§

source§

impl<'tcx> Debug for UndefinedBehaviorInfo<'tcx>

source§

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

Formats the value using the given formatter. Read more
source§

impl<'a> ReportErrorExt for UndefinedBehaviorInfo<'a>

source§

fn diagnostic_message(&self) -> DiagnosticMessage

Returns the diagnostic message for this error.
source§

fn add_args<G: EmissionGuarantee>(self, diag: &mut DiagnosticBuilder<'_, G>)

source§

fn debug(self) -> String
where Self: Sized,

Auto Trait Implementations§

§

impl<'tcx> !DynSend for UndefinedBehaviorInfo<'tcx>

§

impl<'tcx> !DynSync for UndefinedBehaviorInfo<'tcx>

§

impl<'tcx> !RefUnwindSafe for UndefinedBehaviorInfo<'tcx>

§

impl<'tcx> !Send for UndefinedBehaviorInfo<'tcx>

§

impl<'tcx> !Sync for UndefinedBehaviorInfo<'tcx>

§

impl<'tcx> Unpin for UndefinedBehaviorInfo<'tcx>

§

impl<'tcx> !UnwindSafe for UndefinedBehaviorInfo<'tcx>

Blanket Implementations§

source§

impl<T> Aligned for T

source§

const ALIGN: Alignment = _

Alignment of Self.
source§

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

source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
source§

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

source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

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

source§

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

Mutably borrows from an owned value. Read more
source§

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

source§

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

Equivalent to f(&iter.collect::<Vec<_>>()).

§

type Output = R

§

impl<T> Filterable for T

§

fn filterable( self, filter_name: &'static str ) -> RequestFilterDataProvider<T, fn(_: DataRequest<'_>) -> bool>

Creates a filterable data provider with the given name for debugging. Read more
source§

impl<T> From<T> for T

source§

fn from(t: T) -> T

Returns the argument unchanged.

source§

impl<T> Instrument for T

source§

fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
source§

fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
source§

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

source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

source§

impl<P> IntoQueryParam<P> for P

source§

impl<T> MaybeResult<T> for T

§

type Error = !

source§

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

source§

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

§

impl<T> Pointable for T

§

const ALIGN: usize = _

The alignment of pointer.
§

type Init = T

The type for initializers.
§

unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
§

unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
§

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
§

unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
source§

impl<T> Same for T

§

type Output = T

Should always be Self
source§

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

source§

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

source§

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

§

type Error = Infallible

The type returned in the event of a conversion error.
source§

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

Performs the conversion.
source§

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

§

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

The type returned in the event of a conversion error.
source§

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

Performs the conversion.
§

impl<V, T> VZip<V> for T
where V: MultiLane<T>,

§

fn vzip(self) -> V

source§

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

source§

default fn from_cycle_error( tcx: Tcx, cycle_error: &CycleError, _guar: ErrorGuaranteed ) -> T

source§

impl<T> WithSubscriber for T

source§

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
source§

fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
source§

impl<'a, T> Captures<'a> for T
where T: ?Sized,

§

impl<T> ErasedDestructor for T
where T: 'static,

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: 112 bytes

Size for each variant:

  • Ub: 24 bytes
  • Custom: 24 bytes
  • ValidationError: 112 bytes
  • Unreachable: 0 bytes
  • BoundsCheckFailed: 16 bytes
  • DivisionByZero: 0 bytes
  • RemainderByZero: 0 bytes
  • DivisionOverflow: 0 bytes
  • RemainderOverflow: 0 bytes
  • PointerArithOverflow: 0 bytes
  • InvalidMeta: 1 byte
  • UnterminatedCString: 16 bytes
  • PointerUseAfterFree: 16 bytes
  • PointerOutOfBounds: 40 bytes
  • DanglingIntPointer: 16 bytes
  • AlignmentCheckFailed: 3 bytes
  • WriteToReadOnly: 8 bytes
  • DerefFunctionPointer: 8 bytes
  • DerefVTablePointer: 8 bytes
  • InvalidBool: 1 byte
  • InvalidChar: 4 bytes
  • InvalidTag: 24 bytes
  • InvalidFunctionPointer: 16 bytes
  • InvalidVTablePointer: 16 bytes
  • InvalidStr: 16 bytes
  • InvalidUninitBytes: 40 bytes
  • DeadLocal: 0 bytes
  • ScalarSizeMismatch: 16 bytes
  • UninhabitedEnumVariantWritten: 4 bytes
  • UninhabitedEnumVariantRead: 4 bytes
  • InvalidNichedEnumVariantWritten: 8 bytes
  • AbiMismatchArgument: 16 bytes
  • AbiMismatchReturn: 16 bytes