fix(maitake): prevent task cell niche optimization

hawkw · hawkw · commit 1319c06cac6d · 2024-08-02T10:42:45.000-07:00
See rust-lang/miri#3780 (comment)
diff --git a/maitake/src/task.rs b/maitake/src/task.rs
@@ -269,6 +269,7 @@ struct Schedulable<S> {
 /// completed.
 ///
 /// [`Output`]: Future::Output
+#[repr(C)]
 enum Cell<F: Future> {
     /// The future is still pending.
     Pending(F),
