From bf82dbc8c377453ccb97c7d66f1ef4b8f8ebd6b0 Mon Sep 17 00:00:00 2001
From: HampusM <hampus@hampusmat.com>
Date: Thu, 11 Jun 2026 20:29:07 +0200
Subject: fix(engine): prevent copying uninitialized data from enum variants

---
 engine-macros/src/reflection/enum_impl.rs | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'engine-macros')

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>()];
 
-- 
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