From aa5d43647b066d573264473fa391a009f2b5bbe8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?John=20K=C3=A5re=20Alsaker?= <john.kare.alsaker@gmail.com>
Date: Sun, 21 May 2023 11:25:07 +0200
Subject: [PATCH] Add comment

---
 compiler/rustc_query_impl/src/plumbing.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/compiler/rustc_query_impl/src/plumbing.rs b/compiler/rustc_query_impl/src/plumbing.rs
index 0d9d6d6f5822..244f0e84b43d 100644
--- a/compiler/rustc_query_impl/src/plumbing.rs
+++ b/compiler/rustc_query_impl/src/plumbing.rs
@@ -700,6 +700,8 @@ macro_rules! define_queries {
             }
         }
 
+        // These arrays are used for iteration and can't be indexed by `DepKind`.
+
         const TRY_COLLECT_ACTIVE_JOBS: &[for<'tcx> fn(TyCtxt<'tcx>, &mut QueryMap<DepKind>)] =
             &[$(query_impl::$name::try_collect_active_jobs),*];