Assert state in sys/unsupported's RwLock::write_unlock.

Co-authored-by: Joshua Nelson <joshua@yottadb.com>
2020-10-09 00:39:03 +02:00 · 2020-10-09 00:39:03 +02:00 · f1c3edbfab
commit f1c3edbfab
parent f4e884288d
1 changed files with 1 additions and 1 deletions
--- a/library/std/src/sys/unsupported/rwlock.rs
+++ b/library/std/src/sys/unsupported/rwlock.rs
@ -57,7 +57,7 @@ impl RWLock {

    #[inline]
    pub unsafe fn write_unlock(&self) {
-        self.mode.set(0);
+        assert_eq!(self.mode.replace(0), -1);
    }

    #[inline]