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-rw-r--r--compiler/rustc_trait_selection/src/solve/assembly/mod.rs4
1 files changed, 3 insertions, 1 deletions
diff --git a/compiler/rustc_trait_selection/src/solve/assembly/mod.rs b/compiler/rustc_trait_selection/src/solve/assembly/mod.rs
index 8451fbcc434..7052fd776b0 100644
--- a/compiler/rustc_trait_selection/src/solve/assembly/mod.rs
+++ b/compiler/rustc_trait_selection/src/solve/assembly/mod.rs
@@ -190,7 +190,9 @@ pub(super) trait GoalKind<'tcx>:
         kind: ty::ClosureKind,
     ) -> QueryResult<'tcx>;
 
-    /// TODO:
+    /// Compute the built-in logic of the `AsyncFnKindHelper` helper trait, which
+    /// is used internally to delay computation for async closures until after
+    /// upvar analysis is performed in HIR typeck.
     fn consider_builtin_async_fn_kind_helper_candidate(
         ecx: &mut EvalCtxt<'_, 'tcx>,
         goal: Goal<'tcx, Self>,