From 50b2ade8adecdfaa9de710d10578fa34dc969fe7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Linus=20F=C3=A4rnstrand?= <faern@faern.net>
Date: Mon, 23 Nov 2020 00:58:09 +0100
Subject: [PATCH] Revert the usage of compare_exchange_weak

---
 library/std/src/sys_common/thread_parker/futex.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/library/std/src/sys_common/thread_parker/futex.rs b/library/std/src/sys_common/thread_parker/futex.rs
index c2ad6d55dc1f2..0132743b24404 100644
--- a/library/std/src/sys_common/thread_parker/futex.rs
+++ b/library/std/src/sys_common/thread_parker/futex.rs
@@ -49,7 +49,7 @@ impl Parker {
             // Wait for something to happen, assuming it's still set to PARKED.
             futex_wait(&self.state, PARKED, None);
             // Change NOTIFIED=>EMPTY and return in that case.
-            if self.state.compare_exchange_weak(NOTIFIED, EMPTY, Acquire, Acquire).is_ok() {
+            if self.state.compare_exchange(NOTIFIED, EMPTY, Acquire, Acquire).is_ok() {
                 return;
             } else {
                 // Spurious wake up. We loop to try again.