From f25f12d57638a2928b3f738b3b1392d8773e276e Mon Sep 17 00:00:00 2001
From: Lucio Franco <luciofranco14@gmail.com>
Date: Wed, 23 Sep 2020 14:35:10 -0400
Subject: rt: Allow concurrent `block_on`'s with basic_scheduler (#2804)

---
 tokio/src/sync/mod.rs    | 7 +++++++
 tokio/src/sync/notify.rs | 7 +++++++
 2 files changed, 14 insertions(+)

(limited to 'tokio/src/sync')

diff --git a/tokio/src/sync/mod.rs b/tokio/src/sync/mod.rs
index 1a584383..2e674136 100644
--- a/tokio/src/sync/mod.rs
+++ b/tokio/src/sync/mod.rs
@@ -456,6 +456,13 @@ cfg_sync! {
     pub mod watch;
 }
 
+cfg_not_sync! {
+    cfg_rt_core! {
+        mod notify;
+        pub(crate) use notify::Notify;
+    }
+}
+
 cfg_not_sync! {
     cfg_atomic_waker_impl! {
         mod task;
diff --git a/tokio/src/sync/notify.rs b/tokio/src/sync/notify.rs
index 56bbc51b..d319e8aa 100644
--- a/tokio/src/sync/notify.rs
+++ b/tokio/src/sync/notify.rs
@@ -1,3 +1,10 @@
+// Allow `unreachable_pub` warnings when sync is not enabled
+// due to the usage of `Notify` within the `rt-core` feature set.
+// When this module is compiled with `sync` enabled we will warn on
+// this lint. When `rt-core` is enabled we use `pub(crate)` which
+// triggers this warning but it is safe to ignore in this case.
+#![cfg_attr(not(feature = "sync"), allow(unreachable_pub, dead_code))]
+
 use crate::loom::sync::atomic::AtomicU8;
 use crate::loom::sync::Mutex;
 use crate::util::linked_list::{self, LinkedList};
-- 
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