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-rw-r--r--library/std/src/thread/mod.rs5
1 files changed, 1 insertions, 4 deletions
diff --git a/library/std/src/thread/mod.rs b/library/std/src/thread/mod.rs
index 4097eb554..849893780 100644
--- a/library/std/src/thread/mod.rs
+++ b/library/std/src/thread/mod.rs
@@ -548,10 +548,6 @@ impl Builder {
let main = Box::new(main);
// SAFETY: dynamic size and alignment of the Box remain the same. See below for why the
// lifetime change is justified.
- #[cfg(bootstrap)]
- let main =
- unsafe { mem::transmute::<Box<dyn FnOnce() + 'a>, Box<dyn FnOnce() + 'static>>(main) };
- #[cfg(not(bootstrap))]
let main = unsafe { Box::from_raw(Box::into_raw(main) as *mut (dyn FnOnce() + 'static)) };
Ok(JoinInner {
@@ -1585,6 +1581,7 @@ impl<'scope, T> JoinInner<'scope, T> {
/// [`thread::Builder::spawn`]: Builder::spawn
/// [`thread::spawn`]: spawn
#[stable(feature = "rust1", since = "1.0.0")]
+#[cfg_attr(target_os = "teeos", must_use)]
pub struct JoinHandle<T>(JoinInner<'static, T>);
#[stable(feature = "joinhandle_impl_send_sync", since = "1.29.0")]