Add manual Sync impl for ReentrantLockGuard

Fixes: #125526
2024-05-24 16:17:19 -07:00
parent 36153f1a4e
commit f4b9ac68f3
3 changed files with 38 additions and 0 deletions
--- a/library/std/src/sync/reentrant_lock.rs
+++ b/library/std/src/sync/reentrant_lock.rs
@@ -116,6 +116,9 @@ pub struct ReentrantLockGuard<'a, T: ?Sized + 'a> {
 #[unstable(feature = "reentrant_lock", issue = "121440")]
 impl<T: ?Sized> !Send for ReentrantLockGuard<'_, T> {}

+#[unstable(feature = "reentrant_lock", issue = "121440")]
+unsafe impl<T: ?Sized + Sync> Sync for ReentrantLockGuard<'_, T> {}
+
 #[unstable(feature = "reentrant_lock", issue = "121440")]
 impl<T> ReentrantLock<T> {
    /// Creates a new re-entrant lock in an unlocked state ready for use.