From 11ee2a89856dd84e08ced0371d64e8c8cb7af97b Mon Sep 17 00:00:00 2001
From: k-nasa <htilcs1115@gmail.com>
Date: Sun, 22 Mar 2020 19:25:40 +0900
Subject: [PATCH] fix

---
 src/sync/mod.rs | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/sync/mod.rs b/src/sync/mod.rs
index b9162f1..82759fb 100644
--- a/src/sync/mod.rs
+++ b/src/sync/mod.rs
@@ -192,5 +192,8 @@ cfg_unstable! {
 
 pub(crate) mod waker_set;
 pub(crate) use waker_set::WakerSet;
-pub(crate) mod spin_lock;
-pub(crate) use spin_lock::Spinlock;
+
+cfg_default! {
+    pub(crate) mod spin_lock;
+    pub(crate) use spin_lock::Spinlock;
+}