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Assert that various types have the right amount of generic args and fix the sites that used the wrong amount

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This commit is contained in:
Oli Scherer 2022-11-17 11:21:39 +00:00
parent d9a02b0fb7
commit 6f77c97b38
27 changed files with 153 additions and 144 deletions
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9
compiler/rustc_ty_utils/src/ty.rs
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@ -49,12 +49,9 @@ fn sized_constraint_for_ty<'tcx>(
// it on the impl.
let Some(sized_trait) = tcx.lang_items().sized_trait() else { return vec![ty] };
let sized_predicate = ty::Binder::dummy(ty::TraitRef {
def_id: sized_trait,
substs: tcx.mk_substs_trait(ty, &[]),
})
.without_const()
.to_predicate(tcx);
let sized_predicate = ty::Binder::dummy(tcx.mk_trait_ref(sized_trait, ty, &[]))
.without_const()
.to_predicate(tcx);
let predicates = tcx.predicates_of(adtdef.did()).predicates;
if predicates.iter().any(|(p, _)| *p == sized_predicate) { vec![] } else { vec![ty] }
}