X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;f=compiler%2Frustc_ty_utils%2Fsrc%2Fimplied_bounds.rs;h=961c04974e508bc6ca69dc8b320a423ab5afb000;hb=5ff6cdca7ec664c7f96653e6c028b524757d60c4;hp=b7a24a22c53e3d8d3916257116e62f7f3c741ab2;hpb=5773e8baf017956849f821d5c85837ca1162b4ae;p=rust.git

diff --git a/compiler/rustc_ty_utils/src/implied_bounds.rs b/compiler/rustc_ty_utils/src/implied_bounds.rs
index b7a24a22c53..961c04974e5 100644
--- a/compiler/rustc_ty_utils/src/implied_bounds.rs
+++ b/compiler/rustc_ty_utils/src/implied_bounds.rs
@@ -9,26 +9,28 @@ pub fn provide(providers: &mut ty::query::Providers) {
 fn assumed_wf_types(tcx: TyCtxt<'_>, def_id: DefId) -> &ty::List<Ty<'_>> {
     match tcx.def_kind(def_id) {
         DefKind::Fn => {
-            let sig = tcx.fn_sig(def_id);
+            let sig = tcx.fn_sig(def_id).subst_identity();
             let liberated_sig = tcx.liberate_late_bound_regions(def_id, sig);
             liberated_sig.inputs_and_output
         }
         DefKind::AssocFn => {
-            let sig = tcx.fn_sig(def_id);
+            let sig = tcx.fn_sig(def_id).subst_identity();
             let liberated_sig = tcx.liberate_late_bound_regions(def_id, sig);
             let mut assumed_wf_types: Vec<_> =
                 tcx.assumed_wf_types(tcx.parent(def_id)).as_slice().into();
             assumed_wf_types.extend(liberated_sig.inputs_and_output);
             tcx.intern_type_list(&assumed_wf_types)
         }
-        DefKind::Impl => match tcx.impl_trait_ref(def_id) {
-            Some(trait_ref) => {
-                let types: Vec<_> = trait_ref.substs.types().collect();
-                tcx.intern_type_list(&types)
+        DefKind::Impl => {
+            match tcx.impl_trait_ref(def_id) {
+                Some(trait_ref) => {
+                    let types: Vec<_> = trait_ref.skip_binder().substs.types().collect();
+                    tcx.intern_type_list(&types)
+                }
+                // Only the impl self type
+                None => tcx.intern_type_list(&[tcx.type_of(def_id)]),
             }
-            // Only the impl self type
-            None => tcx.intern_type_list(&[tcx.type_of(def_id)]),
-        },
+        }
         DefKind::AssocConst | DefKind::AssocTy => tcx.assumed_wf_types(tcx.parent(def_id)),
         DefKind::Mod
         | DefKind::Struct