From 0338d340c4ad64dde20dfa5ab8b983861e58c631 Mon Sep 17 00:00:00 2001
From: Alex Crichton <alex@alexcrichton.com>
Date: Wed, 5 Sep 2018 15:37:39 -0700
Subject: [PATCH] Remove `#[repr(transparent)]` from atomics

Added in #52149 the discussion in #53514 is showing how we may not want to
actually add this attribute to the atomic types. While we continue to
debate #53514 this commit reverts the addition of the `transparent` attribute.
This should be a more conservative route which leaves us the ability to tweak
this in the future but in the meantime allows us to continue discussion as well.
---
 src/libcore/sync/atomic.rs | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/src/libcore/sync/atomic.rs b/src/libcore/sync/atomic.rs
index 617e067e078..602f8d4ee71 100644
--- a/src/libcore/sync/atomic.rs
+++ b/src/libcore/sync/atomic.rs
@@ -124,7 +124,6 @@ pub fn spin_loop_hint() {
 /// [`bool`]: ../../../std/primitive.bool.html
 #[cfg(target_has_atomic = "8")]
 #[stable(feature = "rust1", since = "1.0.0")]
-#[repr(transparent)]
 pub struct AtomicBool {
     v: UnsafeCell<u8>,
 }
@@ -148,7 +147,6 @@ unsafe impl Sync for AtomicBool {}
 /// This type has the same in-memory representation as a `*mut T`.
 #[cfg(target_has_atomic = "ptr")]
 #[stable(feature = "rust1", since = "1.0.0")]
-#[repr(transparent)]
 pub struct AtomicPtr<T> {
     p: UnsafeCell<*mut T>,
 }
@@ -1101,7 +1099,6 @@ macro_rules! atomic_int {
         ///
         /// [module-level documentation]: index.html
         #[$stable]
-        #[repr(transparent)]
         pub struct $atomic_type {
             v: UnsafeCell<$int_type>,
         }