bjoernager/rust
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Fix a freshly detected wrong TraitRef

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This commit is contained in:
Oli Scherer 2022-12-13 11:59:15 +00:00
parent 0ae3da34c3
commit 9f6ae8828e
1 changed files with 5 additions and 9 deletions
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12
compiler/rustc_trait_selection/src/traits/object_safety.rs
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@ -694,16 +694,12 @@ fn receiver_is_dispatchable<'tcx>(
// U: Trait<Arg1, ..., ArgN> // U: Trait<Arg1, ..., ArgN>
let trait_predicate = { let trait_predicate = {
let substs = let trait_def_id = method.trait_container(tcx).unwrap();
InternalSubsts::for_item(tcx, method.trait_container(tcx).unwrap(), |param, _| { let substs = InternalSubsts::for_item(tcx, trait_def_id, |param, _| {
if param.index == 0 { if param.index == 0 { unsized_self_ty.into() } else { tcx.mk_param_from_def(param) }
unsized_self_ty.into()
} else {
tcx.mk_param_from_def(param)
}
}); });
ty::Binder::dummy(tcx.mk_trait_ref(unsize_did, substs)).to_predicate(tcx) ty::Binder::dummy(tcx.mk_trait_ref(trait_def_id, substs)).to_predicate(tcx)
}; };
let caller_bounds: Vec<Predicate<'tcx>> = let caller_bounds: Vec<Predicate<'tcx>> =