Fix RefUnwindSafe & UnwinsSafe impls for lazy::SyncLazy

The logic here is the same as for Send&Sync impls.
rust-lang · Jul 28, 2020 · ed1439c · ed1439c
1 parent 1454bbd
commit ed1439c
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/library/std/src/lazy.rs b/library/std/src/lazy.rs
@@ -451,7 +451,9 @@ unsafe impl<T, F: Send> Sync for SyncLazy<T, F> where SyncOnceCell<T>: Sync {}
 // auto-derived `Send` impl is OK.
 
 #[unstable(feature = "once_cell", issue = "74465")]
-impl<T, F: RefUnwindSafe> RefUnwindSafe for SyncLazy<T, F> where SyncOnceCell<T>: RefUnwindSafe {}
+impl<T, F: UnwindSafe> RefUnwindSafe for SyncLazy<T, F> where SyncOnceCell<T>: RefUnwindSafe {}
+#[unstable(feature = "once_cell", issue = "74465")]
+impl<T, F: UnwindSafe> UnwindSafe for SyncLazy<T, F> where SyncOnceCell<T>: UnwindSafe {}
 
 impl<T, F> SyncLazy<T, F> {
     /// Creates a new lazy value with the given initializing