rustc_lint::types

Struct ImproperCTypesVisitor

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struct ImproperCTypesVisitor<'a, 'tcx> {
    cx: &'a LateContext<'tcx>,
    mode: CItemKind,
}

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§cx: &'a LateContext<'tcx>§mode: CItemKind

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impl<'a, 'tcx> ImproperCTypesVisitor<'a, 'tcx>

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fn check_for_array_ty(&mut self, sp: Span, ty: Ty<'tcx>) -> bool

Check if the type is array and emit an unsafe type lint.

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fn check_field_type_for_ffi( &self, acc: &mut CTypesVisitorState<'tcx>, field: &FieldDef, args: GenericArgsRef<'tcx>, ) -> FfiResult<'tcx>

Checks if the given field’s type is “ffi-safe”.

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fn check_variant_for_ffi( &self, acc: &mut CTypesVisitorState<'tcx>, ty: Ty<'tcx>, def: AdtDef<'tcx>, variant: &VariantDef, args: GenericArgsRef<'tcx>, ) -> FfiResult<'tcx>

Checks if the given VariantDef’s field types are “ffi-safe”.

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fn check_type_for_ffi( &self, acc: &mut CTypesVisitorState<'tcx>, ty: Ty<'tcx>, ) -> FfiResult<'tcx>

Checks if the given type is “ffi-safe” (has a stable, well-defined representation which can be exported to C code).

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fn emit_ffi_unsafe_type_lint( &mut self, ty: Ty<'tcx>, sp: Span, note: DiagMessage, help: Option<DiagMessage>, )

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fn check_for_opaque_ty(&mut self, sp: Span, ty: Ty<'tcx>) -> bool

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fn check_type_for_ffi_and_report_errors( &mut self, sp: Span, ty: Ty<'tcx>, is_static: bool, is_return_type: bool, )

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fn check_fn(&mut self, def_id: LocalDefId, decl: &'tcx FnDecl<'_>)

Check if a function’s argument types and result type are “ffi-safe”.

For a external ABI function, argument types and the result type are walked to find fn-ptr types that have external ABIs, as these still need checked.

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fn check_foreign_fn(&mut self, def_id: LocalDefId, decl: &'tcx FnDecl<'_>)

Check if a function’s argument types and result type are “ffi-safe”.

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fn check_foreign_static(&mut self, id: OwnerId, span: Span)

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fn is_internal_abi(&self, abi: SpecAbi) -> bool

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fn find_fn_ptr_ty_with_external_abi( &self, hir_ty: &Ty<'tcx>, ty: Ty<'tcx>, ) -> Vec<(Ty<'tcx>, Span)>

Find any fn-ptr types with external ABIs in ty.

For example, Option<extern "C" fn()> returns extern "C" fn()

Auto Trait Implementations§

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impl<'a, 'tcx> Freeze for ImproperCTypesVisitor<'a, 'tcx>

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impl<'a, 'tcx> !RefUnwindSafe for ImproperCTypesVisitor<'a, 'tcx>

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impl<'a, 'tcx> !Send for ImproperCTypesVisitor<'a, 'tcx>

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impl<'a, 'tcx> !Sync for ImproperCTypesVisitor<'a, 'tcx>

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impl<'a, 'tcx> Unpin for ImproperCTypesVisitor<'a, 'tcx>

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impl<'a, 'tcx> !UnwindSafe for ImproperCTypesVisitor<'a, 'tcx>

Blanket Implementations§

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impl<T> Aligned for T

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const ALIGN: Alignment = _

Alignment of Self.
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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more
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impl<T, R> CollectAndApply<T, R> for T

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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<_>>()).

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type Output = R

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impl<T> Filterable for T

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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
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

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

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<P> IntoQueryParam<P> for P

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impl<T> MaybeResult<T> for T

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type Error = !

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

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

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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<I, T, U> Upcast<I, U> for T
where U: UpcastFrom<I, T>,

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fn upcast(self, interner: I) -> U

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impl<I, T> UpcastFrom<I, T> for T

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fn upcast_from(from: T, _tcx: I) -> T

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

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fn vzip(self) -> V

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

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

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impl<T> WithSubscriber for T

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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
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
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impl<'a, T> Captures<'a> for T
where T: ?Sized,

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

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impl<T> MaybeSendSync for T

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: 16 bytes