---

yaml
---
r: 194548
b: refs/heads/snap-stage3
c: 5733726
h: refs/heads/master
v: v3

Author: pnkfelix

[refs]

@@ -1,7 +1,7 @@
 ---
 refs/heads/master: 242ed0b7c0f6a21096f2cc3e1ad1bdb176d02545
 refs/heads/snap-stage1: e33de59e47c5076a89eadeb38f4934f58a3618a6
-refs/heads/snap-stage3: 5bc35b1852ea3b7871befeeeec7531107e147278
+refs/heads/snap-stage3: 5733726508bbfddebf1024e41b2d34439d548bdb
 refs/heads/try: 961e0358e1a5c0faaef606e31e9965742c1643bf
 refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105
 refs/heads/dist-snap: ba4081a5a8573875fed17545846f6f6902c8ba8d

branches/snap-stage3/src/libcore/mem.rs

@@ -173,12 +173,15 @@ pub unsafe fn zeroed<T>() -> T {
 #[inline]
 #[unstable(feature = "filling_drop")]
 pub unsafe fn dropped<T>() -> T {
-    let mut x: T = uninitialized();
-    let p: *mut u8 = transmute(&mut x as *mut T);
-    for i in 0..size_of::<T>() {
-        *p.offset(i as isize) = POST_DROP_U8;
-    }
-    x
+    #[cfg(stage0)]
+    #[inline(always)]
+    unsafe fn dropped_impl<T>() -> T { zeroed() }
+
+    #[cfg(not(stage0))]
+    #[inline(always)]
+    unsafe fn dropped_impl<T>() -> T { intrinsics::init_dropped() }
+
+    dropped_impl()
 }
 
 /// Create an uninitialized value.