ICE: returning array with Const Generic size from mem::uninitialized()

[SephVelut]

error: internal compiler error: src/librustc/ty/sty.rs:2311: expected constant usize, got Const {
    ty: usize,
    val: Param(
        SIZE/#0,
    ),
}

thread 'rustc' panicked at 'Box<Any>', src/librustc_errors/lib.rs:637:9
note: Run with `RUST_BACKTRACE=1` environment variable to display a backtrace.
error: aborting due to previous error

#![feature(const_generics)]
use std::mem;

fn foo<const SIZE: usize>() {
    let arr: [u8; SIZE] = unsafe {
        let mut array: [u8; SIZE] = mem::uninitialized();
        
        array // remove and removes error
    };
}

[varkor]

#61380 should fix this.

Edit: I've confirmed locally that this is fixed and will add a test to the pull request.