From 45416cd91a6bdc493ea62fb3f412713a0fd8e52e Mon Sep 17 00:00:00 2001
From: TyPR124 <t.ruckinger@gmail.com>
Date: Fri, 20 Mar 2020 09:00:53 -0400
Subject: add comment about maintaining OsStr encoding

---
 src/libstd/sys/windows/os_str.rs | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'src/libstd/sys')

diff --git a/src/libstd/sys/windows/os_str.rs b/src/libstd/sys/windows/os_str.rs
index 2820d2b5fe9..ff6885cb274 100644
--- a/src/libstd/sys/windows/os_str.rs
+++ b/src/libstd/sys/windows/os_str.rs
@@ -87,6 +87,8 @@ impl Buf {
         // Safety: Slice is just a wrapper for Wtf8,
         // and self.inner.as_mut_slice() returns &mut Wtf8.
         // Therefore, transmuting &mut Wtf8 to &mut Slice is safe.
+        // Additionally, care should be taken to ensure the slice
+        // is always valid Wtf8.
         unsafe { mem::transmute(self.inner.as_mut_slice()) }
     }
 
-- 
cgit 1.4.1-3-g733a5