Auto merge of #24807 - luqmana:nullable-enum-opt-dst-raw-pointers, r=jakub-

Fixes #23433.

src/test/run-pass/issue-23433.rs

@@ -0,0 +1,24 @@
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// Don't fail if we encounter a NonZero<*T> where T is an unsized type
+
+#![feature(unique)]
+
+use std::ptr::Unique;
+
+fn main() {
+    let mut a = [0u8; 5];
+    let b: Option<Unique<[u8]>> = unsafe { Some(Unique::new(&mut a)) };
+    match b {
+        Some(_) => println!("Got `Some`"),
+        None => panic!("Unexpected `None`"),
+    }
+}