From 080fdb8184cea898f48818312a7645007c8b7594 Mon Sep 17 00:00:00 2001
From: Dodo <kasper199914@gmail.com>
Date: Wed, 28 Aug 2019 17:38:24 +0200
Subject: [PATCH] add missing `#[repr(C)]` on a union

---
 src/libcore/str/mod.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/libcore/str/mod.rs b/src/libcore/str/mod.rs
index f20cb7bfbc3bd..752c372e93e3a 100644
--- a/src/libcore/str/mod.rs
+++ b/src/libcore/str/mod.rs
@@ -2170,6 +2170,7 @@ impl str {
     #[inline(always)]
     #[rustc_const_unstable(feature="const_str_as_bytes")]
     pub const fn as_bytes(&self) -> &[u8] {
+        #[repr(C)]
         union Slices<'a> {
             str: &'a str,
             slice: &'a [u8],