On Tue, 2026-06-16 at 15:47 +0300, Onur Özkan wrote: > On Tue, 16 Jun 2026 10:28:17 +0200 > > + > > + // DriverFenceData is repr(C) and a Fence is its first member. > > + let fence_data_ptr = fence_ptr as *mut DriverFenceData<T>; > > Either the field ordering on the type or this code is wrong because the first > member of DriverFenceData is `rcu_head`.
Yeah, that's a bug introduced in this revision. Thx for pointing it out. Already fixed it downstream. I'm just wondering why my test did not blow up. > > > > +} > > I am unsure whether it is safe to cast the pointer in Fence::from_raw without > Fence being #[repr(transparent)] as the layout compatibility is not guaranteed > explicitly. Shouldn't #[repr(C)] do that trick, too? Do you need both? Who can answer that? P.
