Revert "Use #[derive] for Copy/Clone in s! and friends."

This reverts commit 44c548d.

Author: tgross35

src/macros.rs

@@ -82,11 +82,16 @@ macro_rules! s {
         __item! {
             #[repr(C)]
             #[cfg_attr(feature = "extra_traits", derive(Debug, Eq, Hash, PartialEq))]
-            #[derive(Copy, Clone)]
             #[allow(deprecated)]
             $(#[$attr])*
             pub struct $i { $($field)* }
         }
+        #[allow(deprecated)]
+        impl ::Copy for $i {}
+        #[allow(deprecated)]
+        impl ::Clone for $i {
+            fn clone(&self) -> $i { *self }
+        }
     );
 }
 
@@ -101,10 +106,13 @@ macro_rules! s_paren {
     )*) => ($(
         __item! {
             #[cfg_attr(feature = "extra_traits", derive(Debug, Eq, Hash, PartialEq))]
-            #[derive(Copy, Clone)]
             $(#[$attr])*
             pub struct $i ( $($field)* );
         }
+        impl ::Copy for $i {}
+        impl ::Clone for $i {
+            fn clone(&self) -> $i { *self }
+        }
     )*);
 }
 
@@ -122,19 +130,28 @@ macro_rules! s_no_extra_traits {
     (it: $(#[$attr:meta])* pub union $i:ident { $($field:tt)* }) => (
         __item! {
             #[repr(C)]
-            #[derive(Copy, Clone)]
             $(#[$attr])*
             pub union $i { $($field)* }
         }
+
+        impl ::Copy for $i {}
+        impl ::Clone for $i {
+            fn clone(&self) -> $i { *self }
+        }
     );
 
     (it: $(#[$attr:meta])* pub struct $i:ident { $($field:tt)* }) => (
         __item! {
             #[repr(C)]
-            #[derive(Copy, Clone)]
             $(#[$attr])*
             pub struct $i { $($field)* }
         }
+        #[allow(deprecated)]
+        impl ::Copy for $i {}
+        #[allow(deprecated)]
+        impl ::Clone for $i {
+            fn clone(&self) -> $i { *self }
+        }
     );
 }
 
@@ -160,10 +177,13 @@ macro_rules! e {
     )*) => ($(
         __item! {
             #[cfg_attr(feature = "extra_traits", derive(Debug, Eq, Hash, PartialEq))]
-            #[derive(Copy, Clone)]
             $(#[$attr])*
             pub enum $i { $($field)* }
         }
+        impl ::Copy for $i {}
+        impl ::Clone for $i {
+            fn clone(&self) -> $i { *self }
+        }
     )*);
 }