ICE casting fat raw pointer to non-fat pointer

[FreeFull]

fn main() {
    let foo: &mut [u8] = &mut [1,2,3];
    foo as *mut [u8] as *mut u8;
}

error: internal compiler error: translating unsupported cast: *mut [u8] (cast_other) -> *mut u8 (cast_pointer)
note: the compiler hit an unexpected failure path. this is a bug.
note: we would appreciate a bug report: http://doc.rust-lang.org/complement-bugreport.html
note: run with `RUST_BACKTRACE=1` for a backtrace
task 'rustc' failed at 'Box<Any>', /build/rust-git/src/rust/src/libsyntax/diagnostic.rs:175

[japaric]

Possible duplicate of #17167

[FreeFull]

It does seem to be a duplicate. I guess we'll see once it gets fixed.

[flaper87]

closing as a duplicate of #17167

I moved the code and traceback of this bug to the other one. Thanks for the report 👍

(also feel free to re-open if you think it is not a duplicate)