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Check representability in adt_sized_constraint

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This commit is contained in:
Cameron Steffen 2022-10-10 11:22:41 -05:00
parent 0265a3e93b
commit d933092dc5
15 changed files with 50 additions and 91 deletions
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14
compiler/rustc_middle/src/values.rs
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@ -3,7 +3,7 @@ use rustc_errors::{pluralize, struct_span_err, Applicability, MultiSpan};
use rustc_hir as hir;
use rustc_hir::def::DefKind;
use rustc_middle::ty::Representability;
use rustc_middle::ty::{self, AdtSizedConstraint, DefIdTree, Ty, TyCtxt};
use rustc_middle::ty::{self, DefIdTree, Ty, TyCtxt};
use rustc_query_system::query::QueryInfo;
use rustc_query_system::Value;
use rustc_span::def_id::LocalDefId;
@ -31,18 +31,6 @@ impl<'tcx> Value<TyCtxt<'tcx>> for ty::SymbolName<'_> {
}
}
impl<'tcx> Value<TyCtxt<'tcx>> for AdtSizedConstraint<'_> {
fn from_cycle_error(tcx: TyCtxt<'tcx>, _: &[QueryInfo]) -> Self {
// SAFETY: This is never called when `Self` is not `AdtSizedConstraint<'tcx>`.
// FIXME: Represent the above fact in the trait system somehow.
unsafe {
std::mem::transmute::<AdtSizedConstraint<'tcx>, AdtSizedConstraint<'_>>(
AdtSizedConstraint(tcx.intern_type_list(&[tcx.ty_error()])),
)
}
}
}
impl<'tcx> Value<TyCtxt<'tcx>> for ty::Binder<'_, ty::FnSig<'_>> {
fn from_cycle_error(tcx: TyCtxt<'tcx>, _: &[QueryInfo]) -> Self {
let err = tcx.ty_error();