From 0ec4f471307251eca0b4ffe6b1969e05366a2b9b Mon Sep 17 00:00:00 2001
From: Steven Schveighoffer <schveiguy@gmail.com>
Date: Sun, 29 Oct 2023 11:04:54 -0400
Subject: [PATCH] Fix issue 24207 - make AbstractTask private so it's not
 inadvertently accessible to users of Task.

---
 std/parallelism.d | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/std/parallelism.d b/std/parallelism.d
index 3fe8cd61fe0..fadb4c1759d 100644
--- a/std/parallelism.d
+++ b/std/parallelism.d
@@ -418,8 +418,8 @@ Bugs:  Changes to `ref` and `out` arguments are not propagated to the
 */
 struct Task(alias fun, Args...)
 {
-    AbstractTask base = {runTask : &impl};
-    alias base this;
+    private AbstractTask base = {runTask : &impl};
+    private alias base this;
 
     private @property AbstractTask* basePtr()
     {