Add missing feature check

Author: youknowone

src/codegen/mod.rs

@@ -2019,7 +2019,7 @@ impl CodeGenerator for CompInfo {
         if packed && !is_opaque {
             let n = layout.map_or(1, |l| l.align);
             assert!(ctx.options().rust_features().repr_packed_n || n == 1);
-            if explicit_align.is_some() {
+            if ctx.options().rust_features().repr_align && explicit_align.is_some() {
                 needs_packed_wrapper = true;
             }
             let packed_repr = if n == 1 || needs_packed_wrapper {
@@ -2030,13 +2030,16 @@ impl CodeGenerator for CompInfo {
             attributes.push(attributes::repr_list(&["C", &packed_repr]));
         } else {
             attributes.push(attributes::repr("C"));
-            if let Some(explicit) = explicit_align {
-                // Ensure that the struct has the correct alignment even in
-                // presence of alignas.
-                let explicit = helpers::ast_ty::int_expr(explicit as i64);
-                attributes.push(quote! {
-                    #[repr(align(#explicit))]
-                });
+
+            if ctx.options().rust_features().repr_align {
+                if let Some(explicit) = explicit_align {
+                    // Ensure that the struct has the correct alignment even in
+                    // presence of alignas.
+                    let explicit = helpers::ast_ty::int_expr(explicit as i64);
+                    attributes.push(quote! {
+                        #[repr(align(#explicit))]
+                    });
+                }
             }
         }
 
@@ -2124,7 +2127,7 @@ impl CodeGenerator for CompInfo {
             result.push(quote! {
                 #attributes
                 #[repr(C, align(#align))]
-                pub struct #canonical_ident(#layout_ident);
+                pub struct #canonical_ident(pub #layout_ident);
             });
         }