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Assert that ADTs have the right number of args #123214

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Merged
merged 3 commits into from
Mar 30, 2024
Merged

Assert that ADTs have the right number of args #123214

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5e2c549
Assert that ADTs have the right number of substs
compiler-errors Mar 30, 2024
bc1f1ef
Stop removing substs from Adt type in coherence
compiler-errors Mar 30, 2024
f487d83
Stop doing so much to handle subdiagnostics
compiler-errors Mar 30, 2024
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7 changes: 7 additions & 0 deletions compiler/rustc_middle/src/ty/sty.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1624,6 +1624,13 @@ impl<'tcx> Ty<'tcx> {

#[inline]
pub fn new_adt(tcx: TyCtxt<'tcx>, def: AdtDef<'tcx>, args: GenericArgsRef<'tcx>) -> Ty<'tcx> {
debug_assert_eq!(
tcx.generics_of(def.did()).count(),
args.len(),
"wrong number of args for ADT: {:#?} vs {:#?}",
tcx.generics_of(def.did()).params,
args
);
Ty::new(tcx, Adt(def, args))
}

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