1 files changed, 4 insertions, 4 deletions
diff --git a/src/libstd/os.rs b/src/libstd/os.rs
index 985a8cd32e2..ca3c7e93774 100644
--- a/src/libstd/os.rs
+++ b/src/libstd/os.rs
@@ -813,6 +813,8 @@ pub struct MemoryMap {
 }
 
 /// Type of memory map
+#[allow(raw_pointer_derive)]
+#[derive(Copy)]
 pub enum MemoryMapKind {
     /// Virtual memory map. Usually used to change the permissions of a given
     /// chunk of memory.  Corresponds to `VirtualAlloc` on Windows.
@@ -823,9 +825,9 @@ pub enum MemoryMapKind {
     MapVirtual
 }
 
-impl Copy for MemoryMapKind {}
-
 /// Options the memory map is created with
+#[allow(raw_pointer_derive)]
+#[derive(Copy)]
 pub enum MapOption {
     /// The memory should be readable
     MapReadable,
@@ -852,8 +854,6 @@ pub enum MapOption {
     MapNonStandardFlags(c_int),
 }
 
-impl Copy for MapOption {}
-
 /// Possible errors when creating a map.
 #[derive(Copy, Show)]
 pub enum MapError {