codegen: Make zero-sized arrays affect alignment.

Fixes #684

1 files changed, 3 insertions, 8 deletions

diff --git a/src/codegen/mod.rs b/src/codegen/mod.rs
index 9a7bf897..f189fc69 100644
--- a/src/codegen/mod.rs
+++ b/src/codegen/mod.rs
@@ -3740,14 +3740,14 @@ mod utils {
             #[repr(C)]
             #[derive(Default)]
             pub struct __IncompleteArrayField<T>(
-                ::#prefix::marker::PhantomData<T>);
+                ::#prefix::marker::PhantomData<T>, [T; 0]);
         };
 
         let incomplete_array_impl = quote! {
             impl<T> __IncompleteArrayField<T> {
                 #[inline]
                 pub fn new() -> Self {
-                    __IncompleteArrayField(::#prefix::marker::PhantomData)
+                    __IncompleteArrayField(::#prefix::marker::PhantomData, [])
                 }
 
                 #[inline]
@@ -3790,15 +3790,10 @@ mod utils {
             }
         };
 
-        let incomplete_array_copy_impl = quote! {
-            impl<T> ::#prefix::marker::Copy for __IncompleteArrayField<T> {}
-        };
-
         let items = vec![incomplete_array_decl,
                          incomplete_array_impl,
                          incomplete_array_debug_impl,
-                         incomplete_array_clone_impl,
-                         incomplete_array_copy_impl];
+                         incomplete_array_clone_impl];
 
         let old_items = mem::replace(result, items);
         result.extend(old_items.into_iter());