X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;f=compiler%2Frustc_trait_selection%2Fsrc%2Ftraits%2Ferror_reporting%2Fmod.rs;h=19a1f2481770067250878c92e734e436c2d0f4d4;hb=a4f70fff200a6b3df39dc3739929f0301fe4794b;hp=dda7b2b2fa5b0b392ce3d19f080c236152a8284e;hpb=4d5a2f3d81ed3d36bef505258149bcee1be1394b;p=rust.git

diff --git a/compiler/rustc_trait_selection/src/traits/error_reporting/mod.rs b/compiler/rustc_trait_selection/src/traits/error_reporting/mod.rs
index dda7b2b2fa5..19a1f248177 100644
--- a/compiler/rustc_trait_selection/src/traits/error_reporting/mod.rs
+++ b/compiler/rustc_trait_selection/src/traits/error_reporting/mod.rs
@@ -1,4 +1,5 @@
 mod ambiguity;
+pub mod method_chain;
 pub mod on_unimplemented;
 pub mod suggestions;
 
@@ -536,7 +537,7 @@ fn report_overflow_obligation<T>(
             |err| {
                 self.note_obligation_cause_code(
                     err,
-                    &predicate,
+                    predicate,
                     obligation.param_env,
                     obligation.cause.code(),
                     &mut vec![],
@@ -597,6 +598,7 @@ fn report_selection_error(
                 // can get a better error message by performing HIR-based well-formedness checking.
                 if let ObligationCauseCode::WellFormed(Some(wf_loc)) =
                     root_obligation.cause.code().peel_derives()
+                    && !obligation.predicate.has_non_region_infer()
                 {
                     if let Some(cause) = self
                         .tcx
@@ -1232,6 +1234,7 @@ fn report_selection_error(
                     _ => None,
                 };
 
+                let found_node = found_did.and_then(|did| self.tcx.hir().get_if_local(did));
                 let found_span = found_did.and_then(|did| self.tcx.hir().span_if_local(did));
 
                 if self.reported_closure_mismatch.borrow().contains(&(span, found_span)) {
@@ -1285,6 +1288,7 @@ fn report_selection_error(
                         found_trait_ref,
                         expected_trait_ref,
                         obligation.cause.code(),
+                        found_node,
                     )
                 } else {
                     let (closure_span, closure_arg_span, found) = found_did
@@ -1586,7 +1590,7 @@ fn report_fulfillment_error(
                 {
                     self.note_obligation_cause_code(
                         &mut diag,
-                        &error.obligation.predicate,
+                        error.obligation.predicate,
                         error.obligation.param_env,
                         code,
                         &mut vec![],
@@ -1632,8 +1636,7 @@ fn report_projection_error(
                 let normalized_ty = ocx.normalize(
                     &obligation.cause,
                     obligation.param_env,
-                    self.tcx
-                        .mk_projection(data.projection_ty.item_def_id, data.projection_ty.substs),
+                    self.tcx.mk_projection(data.projection_ty.def_id, data.projection_ty.substs),
                 );
 
                 debug!(?obligation.cause, ?obligation.param_env);
@@ -1684,10 +1687,10 @@ fn report_projection_error(
             let secondary_span = match predicate.kind().skip_binder() {
                 ty::PredicateKind::Clause(ty::Clause::Projection(proj)) => self
                     .tcx
-                    .opt_associated_item(proj.projection_ty.item_def_id)
+                    .opt_associated_item(proj.projection_ty.def_id)
                     .and_then(|trait_assoc_item| {
                         self.tcx
-                            .trait_of_item(proj.projection_ty.item_def_id)
+                            .trait_of_item(proj.projection_ty.def_id)
                             .map(|id| (trait_assoc_item, id))
                     })
                     .and_then(|(trait_assoc_item, id)| {
@@ -1743,7 +1746,7 @@ fn maybe_detailed_projection_msg(
         let trait_def_id = pred.projection_ty.trait_def_id(self.tcx);
         let self_ty = pred.projection_ty.self_ty();
 
-        if Some(pred.projection_ty.item_def_id) == self.tcx.lang_items().fn_once_output() {
+        if Some(pred.projection_ty.def_id) == self.tcx.lang_items().fn_once_output() {
             Some(format!(
                 "expected `{self_ty}` to be a {fn_kind} that returns `{expected_ty}`, but it returns `{normalized_ty}`",
                 fn_kind = self_ty.prefix_string(self.tcx)
@@ -1786,8 +1789,8 @@ fn type_category(tcx: TyCtxt<'_>, t: Ty<'_>) -> Option<u32> {
                 ty::Closure(..) => Some(9),
                 ty::Tuple(..) => Some(10),
                 ty::Param(..) => Some(11),
-                ty::Projection(..) => Some(12),
-                ty::Opaque(..) => Some(13),
+                ty::Alias(ty::Projection, ..) => Some(12),
+                ty::Alias(ty::Opaque, ..) => Some(13),
                 ty::Never => Some(14),
                 ty::Adt(..) => Some(15),
                 ty::Generator(..) => Some(16),
@@ -2601,7 +2604,7 @@ fn note_obligation_cause(&self, err: &mut Diagnostic, obligation: &PredicateObli
         if !self.maybe_note_obligation_cause_for_async_await(err, obligation) {
             self.note_obligation_cause_code(
                 err,
-                &obligation.predicate,
+                obligation.predicate,
                 obligation.param_env,
                 obligation.cause.code(),
                 &mut vec![],