fix(engine): prevent copying uninitialized data from enum variants

1 files changed, 3 insertions, 2 deletions

diff --git a/engine-macros/src/reflection/enum_impl.rs b/engine-macros/src/reflection/enum_impl.rs
index d124db2..b2e01e8 100644
--- a/engine-macros/src/reflection/enum_impl.rs
+++ b/engine-macros/src/reflection/enum_impl.rs
@@ -197,7 +197,7 @@ pub fn generate(input: syn::ItemEnum) -> proc_macro2::TokenStream
         }
     };
 
-    let variants = generate_variants(&input, &engine_crate_path);
+    let variants = generate_variants(&input, is_unit_only, &engine_crate_path);
 
     quote! {
         #[doc(hidden)]
@@ -241,6 +241,7 @@ pub fn generate(input: syn::ItemEnum) -> proc_macro2::TokenStream
 
 fn generate_variants<'a>(
     input: &'a syn::ItemEnum,
+    is_unit_only: bool,
     engine_crate_path: &'a syn::Path,
 ) -> impl Iterator<Item = proc_macro2::TokenStream> + use<'a>
 {
@@ -346,7 +347,7 @@ fn generate_variants<'a>(
         };
 
         let discriminant = match variant.fields {
-            syn::Fields::Unit => {
+            syn::Fields::Unit if is_unit_only => {
                 quote! {
                     let mut buf = [0u8; std::mem::size_of::<i128>()];