3fa48ec849
add_retag: ensure box-to-raw-ptr casts are preserved for Miri In https://github.com/rust-lang/rust/pull/122233 I added `retag_box_to_raw` not realizing that we can already do `addr_of_mut!(*bx)` to turn a box into a raw pointer without an intermediate reference. We just need to ensure this information is preserved past the ElaborateBoxDerefs pass. r? ``@oli-obk``