fn parent_specialization_node(tcx: TyCtxt<'_>, impl1_def_id: LocalDefId) -> Option<Node> {
let trait_ref = tcx.impl_trait_ref(impl1_def_id)?;
- let trait_def = tcx.trait_def(trait_ref.def_id);
+ let trait_def = tcx.trait_def(trait_ref.skip_binder().def_id);
let impl2_node = trait_def.ancestors(tcx, impl1_def_id.to_def_id()).ok()?.nth(1)?;
let impl_generic_predicates = tcx.predicates_of(impl_def_id);
let mut unconstrained_parameters = FxHashSet::default();
let mut constrained_params = FxHashSet::default();
- let impl_trait_ref = tcx.impl_trait_ref(impl_def_id);
+ let impl_trait_ref = tcx.impl_trait_ref(impl_def_id).map(ty::EarlyBinder::subst_identity);
// Unfortunately the functions in `constrained_generic_parameters` don't do
// what we want here. We want only a list of constrained parameters while
});
// Include the well-formed predicates of the type parameters of the impl.
- for arg in tcx.impl_trait_ref(impl1_def_id).unwrap().substs {
+ for arg in tcx.impl_trait_ref(impl1_def_id).unwrap().subst_identity().substs {
let infcx = &tcx.infer_ctxt().build();
let obligations = wf::obligations(
infcx,