From 9fc6737e1bb5048b26bf3478753cb1483017fa50 Mon Sep 17 00:00:00 2001
From: bluss <bluss@users.noreply.github.com>
Date: Sat, 22 Dec 2018 14:25:16 +0100
Subject: [PATCH] FIX: Use repr(C) MaybeUninitCopy after discussion with
 RalfJung

We have a recommendation from the unsafe-wg (no rule yet), that
repr(C) for unions should work this way, so that we can cast from the
union type to one of its fields.
---
 src/maybe_uninit_copy.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/maybe_uninit_copy.rs b/src/maybe_uninit_copy.rs
index dd08e57..1a1c9ec 100644
--- a/src/maybe_uninit_copy.rs
+++ b/src/maybe_uninit_copy.rs
@@ -2,6 +2,7 @@
 use array::Array;
 
 #[derive(Copy, Clone)]
+#[repr(C)] // for cast from self ptr to value
 pub union MaybeUninitCopy<T>
     where T: Copy
 {