Struct rustc_const_eval::transform::check_consts::ops::CellBorrow

pub struct CellBorrow;

A borrow of a type that contains an UnsafeCell somewhere. The borrow might escape to the final value of the constant, and thus we cannot allow this (for now). We may allow it in the future for static items.

Trait Implementations

impl Debug for CellBorrow

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

Formats the value using the given formatter.

impl<'tcx> NonConstOp<'tcx> for CellBorrow

fn build_error( &self, ccx: &ConstCx<'_, 'tcx>, span: Span ) -> DiagnosticBuilder<'tcx, ErrorGuaranteed>

fn status_in_item(&self, _ccx: &ConstCx<'_, 'tcx>) -> Status

Returns an enum indicating whether this operation is allowed within the given item.

fn importance(&self) -> DiagnosticImportance

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.

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