"pacify tidy"

Author: Swatinem

compiler/rustc_mir_transform/src/generator.rs

@@ -363,7 +363,7 @@ impl<'tcx> MutVisitor<'tcx> for TransformVisitor<'tcx> {
                     self.tcx,
                 ));
             } else {
-                // TODO: assert `val` is nil
+                // FIXME(swatinem): assert that `val` is indeed unit?
                 data.statements.extend(expand_aggregate(
                     Place::return_place(),
                     std::iter::empty(),

compiler/rustc_trait_selection/src/traits/project.rs

@@ -1888,7 +1888,7 @@ fn confirm_generator_candidate<'cx, 'tcx>(
     let predicate = if impl_source.is_async {
         let fut_def_id = tcx.require_lang_item(LangItem::Future, None);
 
-        // XXX: this is just copy-pasted generator_trait_ref_and_outputs
+        // FIXME(swatinem): this is just copy-pasted from `generator_trait_ref_and_outputs` for now
         let self_ty = obligation.predicate.self_ty();
         debug_assert!(!self_ty.has_escaping_bound_vars());
         let trait_ref =

compiler/rustc_trait_selection/src/traits/select/confirmation.rs

@@ -695,7 +695,7 @@ impl<'cx, 'tcx> SelectionContext<'cx, 'tcx> {
         debug!(?obligation, ?generator_def_id, ?substs, "confirm_generator_candidate");
 
         let trait_ref = if is_async {
-            // XXX: pretty much just copy-pasted generator_trait_ref_unnormalized
+            // FIXME(swatinem): pretty much just copy-pasted generator_trait_ref_unnormalized
             // and generator_trait_ref_and_outputs:
             let gen_sig = substs.as_generator().poly_sig();