Fix associated type errors too

compiler/rustc_hir_analysis/src/errors.rs

@@ -84,6 +84,8 @@ pub(crate) struct AssocItemNotFound<'a> {
     pub label: Option<AssocItemNotFoundLabel<'a>>,
     #[subdiagnostic]
     pub sugg: Option<AssocItemNotFoundSugg<'a>>,
+    #[label(hir_analysis_within_macro)]
+    pub within_macro_span: Option<Span>,
 }
 
 #[derive(Subdiagnostic)]

compiler/rustc_hir_analysis/src/hir_ty_lowering/errors.rs

@@ -151,6 +151,9 @@ impl<'tcx> dyn HirTyLowerer<'tcx> + '_ {
             qself: &qself_str,
             label: None,
             sugg: None,
+            // Try to get the span of the identifier within the path's syntax context
+            // (if that's different).
+            within_macro_span: assoc_name.span.within_macro(span),
         };
 
         if is_dummy {