Auto merge of #145665 - GrigorenkoPV:144707, r=tgross35

Don't require `T: RefUnwindSafe` for `vec::IntoIter<T>: UnwindSafe` Closes #144707 r? t-libs-api

Author: bors

library/alloc/src/vec/into_iter.rs

@@ -7,6 +7,7 @@ use core::mem::{ManuallyDrop, MaybeUninit, SizedTypeProperties};
 use core::num::NonZero;
 #[cfg(not(no_global_oom_handling))]
 use core::ops::Deref;
+use core::panic::UnwindSafe;
 use core::ptr::{self, NonNull};
 use core::slice::{self};
 use core::{array, fmt};
@@ -60,6 +61,11 @@ pub struct IntoIter<
  pub(super) end: *const T,
 }
 
+// Manually mirroring what `Vec` has,
+// because otherwise we get `T: RefUnwindSafe` from `NonNull`.
+#[stable(feature = "catch_unwind", since = "1.9.0")]
+impl<T: UnwindSafe, A: Allocator + UnwindSafe> UnwindSafe for IntoIter<T, A> {}
+
 #[stable(feature = "vec_intoiter_debug", since = "1.13.0")]
 impl<T: fmt::Debug, A: Allocator> fmt::Debug for IntoIter<T, A> {
  fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {