Rollup merge of #80398 - CAD97:fix-80365, r=dtolnay

Use raw version of align_of in rc data_offset

This was missed in #73845 when switching to use the raw operators.
Fixes #80365
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Mara Bos 2020-12-28 19:09:24 +00:00 committed by GitHub
commit 7003537df6
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@ -14,7 +14,7 @@ use core::hint;
use core::intrinsics::abort;
use core::iter;
use core::marker::{PhantomData, Unpin, Unsize};
use core::mem::{self, align_of_val, size_of_val};
use core::mem::{self, align_of_val_raw, size_of_val};
use core::ops::{CoerceUnsized, Deref, DispatchFromDyn, Receiver};
use core::pin::Pin;
use core::ptr::{self, NonNull};
@ -2366,7 +2366,7 @@ unsafe fn data_offset<T: ?Sized>(ptr: *const T) -> isize {
// Because it is `?Sized`, it will always be the last field in memory.
// Note: This is a detail of the current implementation of the compiler,
// and is not a guaranteed language detail. Do not rely on it outside of std.
unsafe { data_offset_align(align_of_val(&*ptr)) }
unsafe { data_offset_align(align_of_val_raw(ptr)) }
}
#[inline]