1 files changed, 5 insertions, 1 deletions
diff --git a/mingling_macros/src/func/pack.rs b/mingling_macros/src/func/pack.rs
index a1a7e6b..7206b8e 100644
--- a/mingling_macros/src/func/pack.rs
+++ b/mingling_macros/src/func/pack.rs
@@ -138,7 +138,11 @@ pub(crate) fn pack(input: TokenStream) -> TokenStream {
             }
         }
 
-        impl ::mingling::Grouped<#group_name> for #type_name {
+        /// SAFETY: This is an internal implementation of the `pack!` macro,
+        /// guaranteeing that the enum value registered by the `register_type!` macro
+        /// is exactly the same as the actual return value,
+        /// which can be confirmed via the `Ident` in the `quote!` block.
+        unsafe impl ::mingling::Grouped<#group_name> for #type_name {
             fn member_id() -> #group_name {
                 #group_name::#type_name
             }