diff --git a/src/lib.rs b/src/lib.rs
index e969076..6b9a26e 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1910,7 +1910,7 @@ use syn::{
 #[allow(unused)]
 use trait_handlers::{TraitHandler, TraitHandlerMultiple};
 
-fn derive_input_handler(mut ast: DeriveInput) -> syn::Result<proc_macro2::TokenStream> {
+fn derive_input_handler(ast: DeriveInput) -> syn::Result<proc_macro2::TokenStream> {
     let mut token_stream = proc_macro2::TokenStream::new();
     let mut trait_meta_map: HashMap<Trait, Vec<Meta>> = HashMap::new();
 
@@ -1960,7 +1960,7 @@ fn derive_input_handler(mut ast: DeriveInput) -> syn::Result<proc_macro2::TokenS
     {
         if let Some(meta) = trait_meta_map.get(&Trait::Debug) {
             trait_handlers::debug::DebugHandler::trait_meta_handler(
-                &mut ast,
+                &ast,
                 &mut token_stream,
                 &traits,
                 &meta[0],
@@ -1972,7 +1972,7 @@ fn derive_input_handler(mut ast: DeriveInput) -> syn::Result<proc_macro2::TokenS
     {
         if let Some(meta) = trait_meta_map.get(&Trait::Clone) {
             trait_handlers::clone::CloneHandler::trait_meta_handler(
-                &mut ast,
+                &ast,
                 &mut token_stream,
                 &traits,
                 &meta[0],
@@ -1984,7 +1984,7 @@ fn derive_input_handler(mut ast: DeriveInput) -> syn::Result<proc_macro2::TokenS
     {
         if let Some(meta) = trait_meta_map.get(&Trait::Copy) {
             trait_handlers::copy::CopyHandler::trait_meta_handler(
-                &mut ast,
+                &ast,
                 &mut token_stream,
                 &traits,
                 &meta[0],
@@ -1996,7 +1996,7 @@ fn derive_input_handler(mut ast: DeriveInput) -> syn::Result<proc_macro2::TokenS
     {
         if let Some(meta) = trait_meta_map.get(&Trait::PartialEq) {
             trait_handlers::partial_eq::PartialEqHandler::trait_meta_handler(
-                &mut ast,
+                &ast,
                 &mut token_stream,
                 &traits,
                 &meta[0],
@@ -2008,7 +2008,7 @@ fn derive_input_handler(mut ast: DeriveInput) -> syn::Result<proc_macro2::TokenS
     {
         if let Some(meta) = trait_meta_map.get(&Trait::Eq) {
             trait_handlers::eq::EqHandler::trait_meta_handler(
-                &mut ast,
+                &ast,
                 &mut token_stream,
                 &traits,
                 &meta[0],
@@ -2020,7 +2020,7 @@ fn derive_input_handler(mut ast: DeriveInput) -> syn::Result<proc_macro2::TokenS
     {
         if let Some(meta) = trait_meta_map.get(&Trait::PartialOrd) {
             trait_handlers::partial_ord::PartialOrdHandler::trait_meta_handler(
-                &mut ast,
+                &ast,
                 &mut token_stream,
                 &traits,
                 &meta[0],
@@ -2032,7 +2032,7 @@ fn derive_input_handler(mut ast: DeriveInput) -> syn::Result<proc_macro2::TokenS
     {
         if let Some(meta) = trait_meta_map.get(&Trait::Ord) {
             trait_handlers::ord::OrdHandler::trait_meta_handler(
-                &mut ast,
+                &ast,
                 &mut token_stream,
                 &traits,
                 &meta[0],
@@ -2044,7 +2044,7 @@ fn derive_input_handler(mut ast: DeriveInput) -> syn::Result<proc_macro2::TokenS
     {
         if let Some(meta) = trait_meta_map.get(&Trait::Hash) {
             trait_handlers::hash::HashHandler::trait_meta_handler(
-                &mut ast,
+                &ast,
                 &mut token_stream,
                 &traits,
                 &meta[0],
@@ -2056,7 +2056,7 @@ fn derive_input_handler(mut ast: DeriveInput) -> syn::Result<proc_macro2::TokenS
     {
         if let Some(meta) = trait_meta_map.get(&Trait::Default) {
             trait_handlers::default::DefaultHandler::trait_meta_handler(
-                &mut ast,
+                &ast,
                 &mut token_stream,
                 &traits,
                 &meta[0],
@@ -2068,7 +2068,7 @@ fn derive_input_handler(mut ast: DeriveInput) -> syn::Result<proc_macro2::TokenS
     {
         if let Some(meta) = trait_meta_map.get(&Trait::Deref) {
             trait_handlers::deref::DerefHandler::trait_meta_handler(
-                &mut ast,
+                &ast,
                 &mut token_stream,
                 &traits,
                 &meta[0],
@@ -2080,7 +2080,7 @@ fn derive_input_handler(mut ast: DeriveInput) -> syn::Result<proc_macro2::TokenS
     {
         if let Some(meta) = trait_meta_map.get(&Trait::DerefMut) {
             trait_handlers::deref_mut::DerefMutHandler::trait_meta_handler(
-                &mut ast,
+                &ast,
                 &mut token_stream,
                 &traits,
                 &meta[0],
@@ -2092,7 +2092,7 @@ fn derive_input_handler(mut ast: DeriveInput) -> syn::Result<proc_macro2::TokenS
     {
         if let Some(meta) = trait_meta_map.get(&Trait::Into) {
             trait_handlers::into::IntoHandler::trait_meta_handler(
-                &mut ast,
+                &ast,
                 &mut token_stream,
                 &traits,
                 meta,
@@ -2102,7 +2102,7 @@ fn derive_input_handler(mut ast: DeriveInput) -> syn::Result<proc_macro2::TokenS
 
     if trait_meta_map.contains_key(&Trait::_Nothing) {
         // avoid unused warnings
-        let _ = &mut ast;
+        let _ = &ast;
         let _ = &mut token_stream;
         let _ = traits;
         unreachable!();
diff --git a/src/trait_handlers/clone/clone_enum.rs b/src/trait_handlers/clone/clone_enum.rs
index 19b4d24..991243a 100644
--- a/src/trait_handlers/clone/clone_enum.rs
+++ b/src/trait_handlers/clone/clone_enum.rs
@@ -11,7 +11,7 @@ pub(crate) struct CloneEnumHandler;
 impl TraitHandler for CloneEnumHandler {
     #[inline]
     fn trait_meta_handler(
-        ast: &mut DeriveInput,
+        ast: &DeriveInput,
         token_stream: &mut proc_macro2::TokenStream,
         traits: &[Trait],
         meta: &Meta,
@@ -239,13 +239,14 @@ impl TraitHandler for CloneEnumHandler {
 
         let ident = &ast.ident;
 
-        let where_clause = ast.generics.make_where_clause();
+        let mut generics = ast.generics.clone();
+        let where_clause = generics.make_where_clause();
 
         for where_predicate in bound {
             where_clause.predicates.push(where_predicate);
         }
 
-        let (impl_generics, ty_generics, where_clause) = ast.generics.split_for_impl();
+        let (impl_generics, ty_generics, where_clause) = generics.split_for_impl();
 
         token_stream.extend(quote! {
             impl #impl_generics ::core::clone::Clone for #ident #ty_generics #where_clause {
diff --git a/src/trait_handlers/clone/clone_struct.rs b/src/trait_handlers/clone/clone_struct.rs
index 12bc279..73aa8fa 100644
--- a/src/trait_handlers/clone/clone_struct.rs
+++ b/src/trait_handlers/clone/clone_struct.rs
@@ -11,7 +11,7 @@ pub(crate) struct CloneStructHandler;
 impl TraitHandler for CloneStructHandler {
     #[inline]
     fn trait_meta_handler(
-        ast: &mut DeriveInput,
+        ast: &DeriveInput,
         token_stream: &mut proc_macro2::TokenStream,
         traits: &[Trait],
         meta: &Meta,
@@ -162,13 +162,14 @@ impl TraitHandler for CloneStructHandler {
 
         let ident = &ast.ident;
 
-        let where_clause = ast.generics.make_where_clause();
+        let mut generics = ast.generics.clone();
+        let where_clause = generics.make_where_clause();
 
         for where_predicate in bound {
             where_clause.predicates.push(where_predicate);
         }
 
-        let (impl_generics, ty_generics, where_clause) = ast.generics.split_for_impl();
+        let (impl_generics, ty_generics, where_clause) = generics.split_for_impl();
 
         token_stream.extend(quote! {
             impl #impl_generics ::core::clone::Clone for #ident #ty_generics #where_clause {
diff --git a/src/trait_handlers/clone/clone_union.rs b/src/trait_handlers/clone/clone_union.rs
index 9b2968c..dc3c729 100644
--- a/src/trait_handlers/clone/clone_union.rs
+++ b/src/trait_handlers/clone/clone_union.rs
@@ -11,7 +11,7 @@ pub(crate) struct CloneUnionHandler;
 
 impl TraitHandler for CloneUnionHandler {
     fn trait_meta_handler(
-        ast: &mut DeriveInput,
+        ast: &DeriveInput,
         token_stream: &mut proc_macro2::TokenStream,
         traits: &[Trait],
         meta: &Meta,
@@ -42,13 +42,14 @@ impl TraitHandler for CloneUnionHandler {
             &[],
         );
 
-        let where_clause = ast.generics.make_where_clause();
+        let mut generics = ast.generics.clone();
+        let where_clause = generics.make_where_clause();
 
         for where_predicate in bound {
             where_clause.predicates.push(where_predicate);
         }
 
-        let (impl_generics, ty_generics, where_clause) = ast.generics.split_for_impl();
+        let (impl_generics, ty_generics, where_clause) = generics.split_for_impl();
 
         token_stream.extend(quote! {
             impl #impl_generics ::core::clone::Clone for #ident #ty_generics #where_clause {
diff --git a/src/trait_handlers/clone/mod.rs b/src/trait_handlers/clone/mod.rs
index 4719dec..8c8a929 100644
--- a/src/trait_handlers/clone/mod.rs
+++ b/src/trait_handlers/clone/mod.rs
@@ -13,7 +13,7 @@ pub(crate) struct CloneHandler;
 impl TraitHandler for CloneHandler {
     #[inline]
     fn trait_meta_handler(
-        ast: &mut DeriveInput,
+        ast: &DeriveInput,
         token_stream: &mut proc_macro2::TokenStream,
         traits: &[Trait],
         meta: &Meta,
diff --git a/src/trait_handlers/copy/mod.rs b/src/trait_handlers/copy/mod.rs
index 02e0e62..e1ce401 100644
--- a/src/trait_handlers/copy/mod.rs
+++ b/src/trait_handlers/copy/mod.rs
@@ -12,7 +12,7 @@ pub(crate) struct CopyHandler;
 impl TraitHandler for CopyHandler {
     #[inline]
     fn trait_meta_handler(
-        ast: &mut DeriveInput,
+        ast: &DeriveInput,
         token_stream: &mut proc_macro2::TokenStream,
         traits: &[Trait],
         meta: &Meta,
@@ -74,13 +74,14 @@ impl TraitHandler for CopyHandler {
                     &[quote! {::core::clone::Clone}],
                 );
 
-            let where_clause = ast.generics.make_where_clause();
+            let mut generics = ast.generics.clone();
+            let where_clause = generics.make_where_clause();
 
             for where_predicate in bound {
                 where_clause.predicates.push(where_predicate);
             }
 
-            let (impl_generics, ty_generics, where_clause) = ast.generics.split_for_impl();
+            let (impl_generics, ty_generics, where_clause) = generics.split_for_impl();
 
             token_stream.extend(quote! {
                 impl #impl_generics ::core::marker::Copy for #ident #ty_generics #where_clause {
diff --git a/src/trait_handlers/debug/debug_enum.rs b/src/trait_handlers/debug/debug_enum.rs
index 6dc3364..1e42381 100644
--- a/src/trait_handlers/debug/debug_enum.rs
+++ b/src/trait_handlers/debug/debug_enum.rs
@@ -8,7 +8,7 @@ pub(crate) struct DebugEnumHandler;
 
 impl TraitHandler for DebugEnumHandler {
     fn trait_meta_handler(
-        ast: &mut DeriveInput,
+        ast: &DeriveInput,
         token_stream: &mut proc_macro2::TokenStream,
         traits: &[Trait],
         meta: &Meta,
@@ -339,13 +339,14 @@ impl TraitHandler for DebugEnumHandler {
             &[],
         );
 
-        let where_clause = ast.generics.make_where_clause();
+        let mut generics = ast.generics.clone();
+        let where_clause = generics.make_where_clause();
 
         for where_predicate in bound {
             where_clause.predicates.push(where_predicate);
         }
 
-        let (impl_generics, ty_generics, where_clause) = ast.generics.split_for_impl();
+        let (impl_generics, ty_generics, where_clause) = generics.split_for_impl();
 
         token_stream.extend(quote! {
             impl #impl_generics ::core::fmt::Debug for #ident #ty_generics #where_clause {
diff --git a/src/trait_handlers/debug/debug_struct.rs b/src/trait_handlers/debug/debug_struct.rs
index 574a1d9..6430480 100644
--- a/src/trait_handlers/debug/debug_struct.rs
+++ b/src/trait_handlers/debug/debug_struct.rs
@@ -11,7 +11,7 @@ pub struct DebugStructHandler;
 
 impl TraitHandler for DebugStructHandler {
     fn trait_meta_handler(
-        ast: &mut DeriveInput,
+        ast: &DeriveInput,
         token_stream: &mut proc_macro2::TokenStream,
         traits: &[Trait],
         meta: &Meta,
@@ -160,13 +160,14 @@ impl TraitHandler for DebugStructHandler {
             &[],
         );
 
-        let where_clause = ast.generics.make_where_clause();
+        let mut generics = ast.generics.clone();
+        let where_clause = generics.make_where_clause();
 
         for where_predicate in bound {
             where_clause.predicates.push(where_predicate);
         }
 
-        let (impl_generics, ty_generics, where_clause) = ast.generics.split_for_impl();
+        let (impl_generics, ty_generics, where_clause) = generics.split_for_impl();
 
         token_stream.extend(quote! {
             impl #impl_generics ::core::fmt::Debug for #ident #ty_generics #where_clause {
diff --git a/src/trait_handlers/debug/debug_union.rs b/src/trait_handlers/debug/debug_union.rs
index 0f9581c..096ea77 100644
--- a/src/trait_handlers/debug/debug_union.rs
+++ b/src/trait_handlers/debug/debug_union.rs
@@ -11,7 +11,7 @@ pub(crate) struct DebugUnionHandler;
 
 impl TraitHandler for DebugUnionHandler {
     fn trait_meta_handler(
-        ast: &mut DeriveInput,
+        ast: &DeriveInput,
         token_stream: &mut proc_macro2::TokenStream,
         traits: &[Trait],
         meta: &Meta,
diff --git a/src/trait_handlers/debug/mod.rs b/src/trait_handlers/debug/mod.rs
index 43f006a..367ddb7 100644
--- a/src/trait_handlers/debug/mod.rs
+++ b/src/trait_handlers/debug/mod.rs
@@ -15,7 +15,7 @@ pub(crate) struct DebugHandler;
 impl TraitHandler for DebugHandler {
     #[inline]
     fn trait_meta_handler(
-        ast: &mut DeriveInput,
+        ast: &DeriveInput,
         token_stream: &mut proc_macro2::TokenStream,
         traits: &[Trait],
         meta: &Meta,
diff --git a/src/trait_handlers/default/default_enum.rs b/src/trait_handlers/default/default_enum.rs
index bac7767..8aa4ec6 100644
--- a/src/trait_handlers/default/default_enum.rs
+++ b/src/trait_handlers/default/default_enum.rs
@@ -11,7 +11,7 @@ pub(crate) struct DefaultEnumHandler;
 
 impl TraitHandler for DefaultEnumHandler {
     fn trait_meta_handler(
-        ast: &mut DeriveInput,
+        ast: &DeriveInput,
         token_stream: &mut proc_macro2::TokenStream,
         traits: &[Trait],
         meta: &Meta,
@@ -169,13 +169,14 @@ impl TraitHandler for DefaultEnumHandler {
             &[],
         );
 
-        let where_clause = ast.generics.make_where_clause();
+        let mut generics = ast.generics.clone();
+        let where_clause = generics.make_where_clause();
 
         for where_predicate in bound {
             where_clause.predicates.push(where_predicate);
         }
 
-        let (impl_generics, ty_generics, where_clause) = ast.generics.split_for_impl();
+        let (impl_generics, ty_generics, where_clause) = generics.split_for_impl();
 
         token_stream.extend(quote! {
             impl #impl_generics ::core::default::Default for #ident #ty_generics #where_clause {
diff --git a/src/trait_handlers/default/default_struct.rs b/src/trait_handlers/default/default_struct.rs
index ece7720..ea25b56 100644
--- a/src/trait_handlers/default/default_struct.rs
+++ b/src/trait_handlers/default/default_struct.rs
@@ -11,7 +11,7 @@ pub(crate) struct DefaultStructHandler;
 
 impl TraitHandler for DefaultStructHandler {
     fn trait_meta_handler(
-        ast: &mut DeriveInput,
+        ast: &DeriveInput,
         token_stream: &mut proc_macro2::TokenStream,
         traits: &[Trait],
         meta: &Meta,
@@ -114,13 +114,14 @@ impl TraitHandler for DefaultStructHandler {
             &[],
         );
 
-        let where_clause = ast.generics.make_where_clause();
+        let mut generics = ast.generics.clone();
+        let where_clause = generics.make_where_clause();
 
         for where_predicate in bound {
             where_clause.predicates.push(where_predicate);
         }
 
-        let (impl_generics, ty_generics, where_clause) = ast.generics.split_for_impl();
+        let (impl_generics, ty_generics, where_clause) = generics.split_for_impl();
 
         token_stream.extend(quote! {
             impl #impl_generics ::core::default::Default for #ident #ty_generics #where_clause {
diff --git a/src/trait_handlers/default/default_union.rs b/src/trait_handlers/default/default_union.rs
index 371d38e..a535c01 100644
--- a/src/trait_handlers/default/default_union.rs
+++ b/src/trait_handlers/default/default_union.rs
@@ -11,7 +11,7 @@ pub(crate) struct DefaultUnionHandler;
 
 impl TraitHandler for DefaultUnionHandler {
     fn trait_meta_handler(
-        ast: &mut DeriveInput,
+        ast: &DeriveInput,
         token_stream: &mut proc_macro2::TokenStream,
         traits: &[Trait],
         meta: &Meta,
@@ -118,13 +118,14 @@ impl TraitHandler for DefaultUnionHandler {
             &[],
         );
 
-        let where_clause = ast.generics.make_where_clause();
+        let mut generics = ast.generics.clone();
+        let where_clause = generics.make_where_clause();
 
         for where_predicate in bound {
             where_clause.predicates.push(where_predicate);
         }
 
-        let (impl_generics, ty_generics, where_clause) = ast.generics.split_for_impl();
+        let (impl_generics, ty_generics, where_clause) = generics.split_for_impl();
 
         token_stream.extend(quote! {
             impl #impl_generics ::core::default::Default for #ident #ty_generics #where_clause {
diff --git a/src/trait_handlers/default/mod.rs b/src/trait_handlers/default/mod.rs
index 1e20da9..5c1eeb8 100644
--- a/src/trait_handlers/default/mod.rs
+++ b/src/trait_handlers/default/mod.rs
@@ -14,7 +14,7 @@ pub(crate) struct DefaultHandler;
 impl TraitHandler for DefaultHandler {
     #[inline]
     fn trait_meta_handler(
-        ast: &mut DeriveInput,
+        ast: &DeriveInput,
         token_stream: &mut proc_macro2::TokenStream,
         traits: &[Trait],
         meta: &Meta,
diff --git a/src/trait_handlers/deref/deref_enum.rs b/src/trait_handlers/deref/deref_enum.rs
index 06dcb55..1c478cc 100644
--- a/src/trait_handlers/deref/deref_enum.rs
+++ b/src/trait_handlers/deref/deref_enum.rs
@@ -12,7 +12,7 @@ pub(crate) struct DerefEnumHandler;
 impl TraitHandler for DerefEnumHandler {
     #[inline]
     fn trait_meta_handler(
-        ast: &mut DeriveInput,
+        ast: &DeriveInput,
         token_stream: &mut proc_macro2::TokenStream,
         traits: &[Trait],
         meta: &Meta,
diff --git a/src/trait_handlers/deref/deref_struct.rs b/src/trait_handlers/deref/deref_struct.rs
index 6a94e90..8c97130 100644
--- a/src/trait_handlers/deref/deref_struct.rs
+++ b/src/trait_handlers/deref/deref_struct.rs
@@ -15,7 +15,7 @@ pub(crate) struct DerefStructHandler;
 impl TraitHandler for DerefStructHandler {
     #[inline]
     fn trait_meta_handler(
-        ast: &mut DeriveInput,
+        ast: &DeriveInput,
         token_stream: &mut proc_macro2::TokenStream,
         traits: &[Trait],
         meta: &Meta,
diff --git a/src/trait_handlers/deref/mod.rs b/src/trait_handlers/deref/mod.rs
index d162f0d..1a3263c 100644
--- a/src/trait_handlers/deref/mod.rs
+++ b/src/trait_handlers/deref/mod.rs
@@ -13,7 +13,7 @@ pub(crate) struct DerefHandler;
 impl TraitHandler for DerefHandler {
     #[inline]
     fn trait_meta_handler(
-        ast: &mut DeriveInput,
+        ast: &DeriveInput,
         token_stream: &mut proc_macro2::TokenStream,
         traits: &[Trait],
         meta: &Meta,
diff --git a/src/trait_handlers/deref_mut/deref_mut_enum.rs b/src/trait_handlers/deref_mut/deref_mut_enum.rs
index d5464f9..6ba2f2e 100644
--- a/src/trait_handlers/deref_mut/deref_mut_enum.rs
+++ b/src/trait_handlers/deref_mut/deref_mut_enum.rs
@@ -12,7 +12,7 @@ pub(crate) struct DerefMutEnumHandler;
 impl TraitHandler for DerefMutEnumHandler {
     #[inline]
     fn trait_meta_handler(
-        ast: &mut DeriveInput,
+        ast: &DeriveInput,
         token_stream: &mut proc_macro2::TokenStream,
         traits: &[Trait],
         meta: &Meta,
diff --git a/src/trait_handlers/deref_mut/deref_mut_struct.rs b/src/trait_handlers/deref_mut/deref_mut_struct.rs
index b64db5f..deb5888 100644
--- a/src/trait_handlers/deref_mut/deref_mut_struct.rs
+++ b/src/trait_handlers/deref_mut/deref_mut_struct.rs
@@ -12,7 +12,7 @@ pub(crate) struct DerefMutStructHandler;
 impl TraitHandler for DerefMutStructHandler {
     #[inline]
     fn trait_meta_handler(
-        ast: &mut DeriveInput,
+        ast: &DeriveInput,
         token_stream: &mut proc_macro2::TokenStream,
         traits: &[Trait],
         meta: &Meta,
diff --git a/src/trait_handlers/deref_mut/mod.rs b/src/trait_handlers/deref_mut/mod.rs
index 14a5d71..01f0991 100644
--- a/src/trait_handlers/deref_mut/mod.rs
+++ b/src/trait_handlers/deref_mut/mod.rs
@@ -13,7 +13,7 @@ pub(crate) struct DerefMutHandler;
 impl TraitHandler for DerefMutHandler {
     #[inline]
     fn trait_meta_handler(
-        ast: &mut DeriveInput,
+        ast: &DeriveInput,
         token_stream: &mut proc_macro2::TokenStream,
         traits: &[Trait],
         meta: &Meta,
diff --git a/src/trait_handlers/eq/mod.rs b/src/trait_handlers/eq/mod.rs
index ff722e1..bff020d 100644
--- a/src/trait_handlers/eq/mod.rs
+++ b/src/trait_handlers/eq/mod.rs
@@ -12,7 +12,7 @@ pub(crate) struct EqHandler;
 impl TraitHandler for EqHandler {
     #[inline]
     fn trait_meta_handler(
-        ast: &mut DeriveInput,
+        ast: &DeriveInput,
         token_stream: &mut proc_macro2::TokenStream,
         traits: &[Trait],
         meta: &Meta,
@@ -86,13 +86,14 @@ impl TraitHandler for EqHandler {
                     &[quote! {::core::cmp::PartialEq}],
                 );
 
-            let where_clause = ast.generics.make_where_clause();
+            let mut generics = ast.generics.clone();
+            let where_clause = generics.make_where_clause();
 
             for where_predicate in bound {
                 where_clause.predicates.push(where_predicate);
             }
 
-            let (impl_generics, ty_generics, where_clause) = ast.generics.split_for_impl();
+            let (impl_generics, ty_generics, where_clause) = generics.split_for_impl();
 
             token_stream.extend(quote! {
                 impl #impl_generics ::core::cmp::Eq for #ident #ty_generics #where_clause {
diff --git a/src/trait_handlers/hash/hash_enum.rs b/src/trait_handlers/hash/hash_enum.rs
index 06b04dc..0133702 100644
--- a/src/trait_handlers/hash/hash_enum.rs
+++ b/src/trait_handlers/hash/hash_enum.rs
@@ -12,7 +12,7 @@ pub(crate) struct HashEnumHandler;
 impl TraitHandler for HashEnumHandler {
     #[inline]
     fn trait_meta_handler(
-        ast: &mut DeriveInput,
+        ast: &DeriveInput,
         token_stream: &mut proc_macro2::TokenStream,
         traits: &[Trait],
         meta: &Meta,
@@ -146,13 +146,14 @@ impl TraitHandler for HashEnumHandler {
             &[],
         );
 
-        let where_clause = ast.generics.make_where_clause();
+        let mut generics = ast.generics.clone();
+        let where_clause = generics.make_where_clause();
 
         for where_predicate in bound {
             where_clause.predicates.push(where_predicate);
         }
 
-        let (impl_generics, ty_generics, where_clause) = ast.generics.split_for_impl();
+        let (impl_generics, ty_generics, where_clause) = generics.split_for_impl();
 
         token_stream.extend(quote! {
             impl #impl_generics ::core::hash::Hash for #ident #ty_generics #where_clause {
diff --git a/src/trait_handlers/hash/hash_struct.rs b/src/trait_handlers/hash/hash_struct.rs
index bafb6c5..0444e4b 100644
--- a/src/trait_handlers/hash/hash_struct.rs
+++ b/src/trait_handlers/hash/hash_struct.rs
@@ -12,7 +12,7 @@ pub(crate) struct HashStructHandler;
 impl TraitHandler for HashStructHandler {
     #[inline]
     fn trait_meta_handler(
-        ast: &mut DeriveInput,
+        ast: &DeriveInput,
         token_stream: &mut proc_macro2::TokenStream,
         traits: &[Trait],
         meta: &Meta,
@@ -65,13 +65,14 @@ impl TraitHandler for HashStructHandler {
             &[],
         );
 
-        let where_clause = ast.generics.make_where_clause();
+        let mut generics = ast.generics.clone();
+        let where_clause = generics.make_where_clause();
 
         for where_predicate in bound {
             where_clause.predicates.push(where_predicate);
         }
 
-        let (impl_generics, ty_generics, where_clause) = ast.generics.split_for_impl();
+        let (impl_generics, ty_generics, where_clause) = generics.split_for_impl();
 
         token_stream.extend(quote! {
             impl #impl_generics ::core::hash::Hash for #ident #ty_generics #where_clause {
diff --git a/src/trait_handlers/hash/hash_union.rs b/src/trait_handlers/hash/hash_union.rs
index 53a3ce0..f430c65 100644
--- a/src/trait_handlers/hash/hash_union.rs
+++ b/src/trait_handlers/hash/hash_union.rs
@@ -9,7 +9,7 @@ pub(crate) struct HashUnionHandler;
 impl TraitHandler for HashUnionHandler {
     #[inline]
     fn trait_meta_handler(
-        ast: &mut DeriveInput,
+        ast: &DeriveInput,
         token_stream: &mut proc_macro2::TokenStream,
         traits: &[Trait],
         meta: &Meta,
diff --git a/src/trait_handlers/hash/mod.rs b/src/trait_handlers/hash/mod.rs
index d10e528..c4b07d9 100644
--- a/src/trait_handlers/hash/mod.rs
+++ b/src/trait_handlers/hash/mod.rs
@@ -14,7 +14,7 @@ pub(crate) struct HashHandler;
 impl TraitHandler for HashHandler {
     #[inline]
     fn trait_meta_handler(
-        ast: &mut DeriveInput,
+        ast: &DeriveInput,
         token_stream: &mut proc_macro2::TokenStream,
         traits: &[Trait],
         meta: &Meta,
diff --git a/src/trait_handlers/into/into_enum.rs b/src/trait_handlers/into/into_enum.rs
index 12fcd19..dd4b198 100644
--- a/src/trait_handlers/into/into_enum.rs
+++ b/src/trait_handlers/into/into_enum.rs
@@ -14,7 +14,7 @@ pub(crate) struct IntoEnumHandler;
 impl TraitHandlerMultiple for IntoEnumHandler {
     #[inline]
     fn trait_meta_handler(
-        ast: &mut DeriveInput,
+        ast: &DeriveInput,
         token_stream: &mut proc_macro2::TokenStream,
         traits: &[Trait],
         meta: &[Meta],
diff --git a/src/trait_handlers/into/into_struct.rs b/src/trait_handlers/into/into_struct.rs
index cac39c8..ea13948 100644
--- a/src/trait_handlers/into/into_struct.rs
+++ b/src/trait_handlers/into/into_struct.rs
@@ -14,7 +14,7 @@ pub(crate) struct IntoStructHandler;
 impl TraitHandlerMultiple for IntoStructHandler {
     #[inline]
     fn trait_meta_handler(
-        ast: &mut DeriveInput,
+        ast: &DeriveInput,
         token_stream: &mut proc_macro2::TokenStream,
         traits: &[Trait],
         meta: &[Meta],
diff --git a/src/trait_handlers/into/mod.rs b/src/trait_handlers/into/mod.rs
index 66d6e2b..1f91777 100644
--- a/src/trait_handlers/into/mod.rs
+++ b/src/trait_handlers/into/mod.rs
@@ -14,7 +14,7 @@ pub(crate) struct IntoHandler;
 impl TraitHandlerMultiple for IntoHandler {
     #[inline]
     fn trait_meta_handler(
-        ast: &mut DeriveInput,
+        ast: &DeriveInput,
         token_stream: &mut proc_macro2::TokenStream,
         traits: &[Trait],
         meta: &[Meta],
diff --git a/src/trait_handlers/mod.rs b/src/trait_handlers/mod.rs
index 1c2818f..d82242b 100644
--- a/src/trait_handlers/mod.rs
+++ b/src/trait_handlers/mod.rs
@@ -30,7 +30,7 @@ pub(crate) mod partial_ord;
 pub(crate) trait TraitHandler {
     #[allow(dead_code)]
     fn trait_meta_handler(
-        ast: &mut DeriveInput,
+        ast: &DeriveInput,
         token_stream: &mut proc_macro2::TokenStream,
         traits: &[Trait],
         meta: &Meta,
@@ -40,7 +40,7 @@ pub(crate) trait TraitHandler {
 pub(crate) trait TraitHandlerMultiple {
     #[allow(dead_code)]
     fn trait_meta_handler(
-        ast: &mut DeriveInput,
+        ast: &DeriveInput,
         token_stream: &mut proc_macro2::TokenStream,
         traits: &[Trait],
         meta: &[Meta],
diff --git a/src/trait_handlers/ord/mod.rs b/src/trait_handlers/ord/mod.rs
index 2b37631..89b2e15 100644
--- a/src/trait_handlers/ord/mod.rs
+++ b/src/trait_handlers/ord/mod.rs
@@ -14,7 +14,7 @@ pub(crate) struct OrdHandler;
 impl TraitHandler for OrdHandler {
     #[inline]
     fn trait_meta_handler(
-        ast: &mut DeriveInput,
+        ast: &DeriveInput,
         token_stream: &mut proc_macro2::TokenStream,
         traits: &[Trait],
         meta: &Meta,
diff --git a/src/trait_handlers/ord/ord_enum.rs b/src/trait_handlers/ord/ord_enum.rs
index e9461b9..0edcb89 100644
--- a/src/trait_handlers/ord/ord_enum.rs
+++ b/src/trait_handlers/ord/ord_enum.rs
@@ -14,7 +14,7 @@ pub(crate) struct OrdEnumHandler;
 impl TraitHandler for OrdEnumHandler {
     #[inline]
     fn trait_meta_handler(
-        ast: &mut DeriveInput,
+        ast: &DeriveInput,
         token_stream: &mut proc_macro2::TokenStream,
         traits: &[Trait],
         meta: &Meta,
@@ -248,13 +248,14 @@ impl TraitHandler for OrdEnumHandler {
             &crate::trait_handlers::ord::supertraits(traits),
         );
 
-        let where_clause = ast.generics.make_where_clause();
+        let mut generics = ast.generics.clone();
+        let where_clause = generics.make_where_clause();
 
         for where_predicate in bound {
             where_clause.predicates.push(where_predicate);
         }
 
-        let (impl_generics, ty_generics, where_clause) = ast.generics.split_for_impl();
+        let (impl_generics, ty_generics, where_clause) = generics.split_for_impl();
 
         token_stream.extend(quote! {
             impl #impl_generics ::core::cmp::Ord for #ident #ty_generics #where_clause {
diff --git a/src/trait_handlers/ord/ord_struct.rs b/src/trait_handlers/ord/ord_struct.rs
index 64d6630..fc6c170 100644
--- a/src/trait_handlers/ord/ord_struct.rs
+++ b/src/trait_handlers/ord/ord_struct.rs
@@ -14,7 +14,7 @@ pub(crate) struct OrdStructHandler;
 impl TraitHandler for OrdStructHandler {
     #[inline]
     fn trait_meta_handler(
-        ast: &mut DeriveInput,
+        ast: &DeriveInput,
         token_stream: &mut proc_macro2::TokenStream,
         traits: &[Trait],
         meta: &Meta,
@@ -86,13 +86,14 @@ impl TraitHandler for OrdStructHandler {
             &crate::trait_handlers::ord::supertraits(traits),
         );
 
-        let where_clause = ast.generics.make_where_clause();
+        let mut generics = ast.generics.clone();
+        let where_clause = generics.make_where_clause();
 
         for where_predicate in bound {
             where_clause.predicates.push(where_predicate);
         }
 
-        let (impl_generics, ty_generics, where_clause) = ast.generics.split_for_impl();
+        let (impl_generics, ty_generics, where_clause) = generics.split_for_impl();
 
         token_stream.extend(quote! {
             impl #impl_generics ::core::cmp::Ord for #ident #ty_generics #where_clause {
diff --git a/src/trait_handlers/partial_eq/mod.rs b/src/trait_handlers/partial_eq/mod.rs
index cf036b5..2bf7c72 100644
--- a/src/trait_handlers/partial_eq/mod.rs
+++ b/src/trait_handlers/partial_eq/mod.rs
@@ -14,7 +14,7 @@ pub(crate) struct PartialEqHandler;
 impl TraitHandler for PartialEqHandler {
     #[inline]
     fn trait_meta_handler(
-        ast: &mut DeriveInput,
+        ast: &DeriveInput,
         token_stream: &mut proc_macro2::TokenStream,
         traits: &[Trait],
         meta: &Meta,
diff --git a/src/trait_handlers/partial_eq/partial_eq_enum.rs b/src/trait_handlers/partial_eq/partial_eq_enum.rs
index 905c776..d000f35 100644
--- a/src/trait_handlers/partial_eq/partial_eq_enum.rs
+++ b/src/trait_handlers/partial_eq/partial_eq_enum.rs
@@ -12,7 +12,7 @@ pub(crate) struct PartialEqEnumHandler;
 impl TraitHandler for PartialEqEnumHandler {
     #[inline]
     fn trait_meta_handler(
-        ast: &mut DeriveInput,
+        ast: &DeriveInput,
         token_stream: &mut proc_macro2::TokenStream,
         traits: &[Trait],
         meta: &Meta,
@@ -185,13 +185,14 @@ impl TraitHandler for PartialEqEnumHandler {
             &[],
         );
 
-        let where_clause = ast.generics.make_where_clause();
+        let mut generics = ast.generics.clone();
+        let where_clause = generics.make_where_clause();
 
         for where_predicate in bound {
             where_clause.predicates.push(where_predicate);
         }
 
-        let (impl_generics, ty_generics, where_clause) = ast.generics.split_for_impl();
+        let (impl_generics, ty_generics, where_clause) = generics.split_for_impl();
 
         token_stream.extend(quote! {
             impl #impl_generics ::core::cmp::PartialEq for #ident #ty_generics #where_clause {
diff --git a/src/trait_handlers/partial_eq/partial_eq_struct.rs b/src/trait_handlers/partial_eq/partial_eq_struct.rs
index 0fd6195..7394b8b 100644
--- a/src/trait_handlers/partial_eq/partial_eq_struct.rs
+++ b/src/trait_handlers/partial_eq/partial_eq_struct.rs
@@ -12,7 +12,7 @@ pub(crate) struct PartialEqStructHandler;
 impl TraitHandler for PartialEqStructHandler {
     #[inline]
     fn trait_meta_handler(
-        ast: &mut DeriveInput,
+        ast: &DeriveInput,
         token_stream: &mut proc_macro2::TokenStream,
         traits: &[Trait],
         meta: &Meta,
@@ -70,13 +70,14 @@ impl TraitHandler for PartialEqStructHandler {
             &[],
         );
 
-        let where_clause = ast.generics.make_where_clause();
+        let mut generics = ast.generics.clone();
+        let where_clause = generics.make_where_clause();
 
         for where_predicate in bound {
             where_clause.predicates.push(where_predicate);
         }
 
-        let (impl_generics, ty_generics, where_clause) = ast.generics.split_for_impl();
+        let (impl_generics, ty_generics, where_clause) = generics.split_for_impl();
 
         token_stream.extend(quote! {
             impl #impl_generics ::core::cmp::PartialEq for #ident #ty_generics #where_clause {
diff --git a/src/trait_handlers/partial_eq/partial_eq_union.rs b/src/trait_handlers/partial_eq/partial_eq_union.rs
index b4c20c1..80ac2b7 100644
--- a/src/trait_handlers/partial_eq/partial_eq_union.rs
+++ b/src/trait_handlers/partial_eq/partial_eq_union.rs
@@ -9,7 +9,7 @@ pub(crate) struct PartialEqUnionHandler;
 impl TraitHandler for PartialEqUnionHandler {
     #[inline]
     fn trait_meta_handler(
-        ast: &mut DeriveInput,
+        ast: &DeriveInput,
         token_stream: &mut proc_macro2::TokenStream,
         traits: &[Trait],
         meta: &Meta,
diff --git a/src/trait_handlers/partial_ord/mod.rs b/src/trait_handlers/partial_ord/mod.rs
index 38957a9..c69ff20 100644
--- a/src/trait_handlers/partial_ord/mod.rs
+++ b/src/trait_handlers/partial_ord/mod.rs
@@ -14,7 +14,7 @@ pub(crate) struct PartialOrdHandler;
 impl TraitHandler for PartialOrdHandler {
     #[inline]
     fn trait_meta_handler(
-        ast: &mut DeriveInput,
+        ast: &DeriveInput,
         token_stream: &mut proc_macro2::TokenStream,
         traits: &[Trait],
         meta: &Meta,
diff --git a/src/trait_handlers/partial_ord/partial_ord_enum.rs b/src/trait_handlers/partial_ord/partial_ord_enum.rs
index 3e22a87..c41036f 100644
--- a/src/trait_handlers/partial_ord/partial_ord_enum.rs
+++ b/src/trait_handlers/partial_ord/partial_ord_enum.rs
@@ -14,7 +14,7 @@ pub(crate) struct PartialOrdEnumHandler;
 impl TraitHandler for PartialOrdEnumHandler {
     #[inline]
     fn trait_meta_handler(
-        ast: &mut DeriveInput,
+        ast: &DeriveInput,
         token_stream: &mut proc_macro2::TokenStream,
         traits: &[Trait],
         meta: &Meta,
@@ -253,13 +253,14 @@ impl TraitHandler for PartialOrdEnumHandler {
             &[quote! {::core::cmp::PartialEq}],
         );
 
-        let where_clause = ast.generics.make_where_clause();
+        let mut generics = ast.generics.clone();
+        let where_clause = generics.make_where_clause();
 
         for where_predicate in bound {
             where_clause.predicates.push(where_predicate);
         }
 
-        let (impl_generics, ty_generics, where_clause) = ast.generics.split_for_impl();
+        let (impl_generics, ty_generics, where_clause) = generics.split_for_impl();
 
         token_stream.extend(quote! {
             impl #impl_generics ::core::cmp::PartialOrd for #ident #ty_generics #where_clause {
diff --git a/src/trait_handlers/partial_ord/partial_ord_struct.rs b/src/trait_handlers/partial_ord/partial_ord_struct.rs
index 2fa9e60..7b66644 100644
--- a/src/trait_handlers/partial_ord/partial_ord_struct.rs
+++ b/src/trait_handlers/partial_ord/partial_ord_struct.rs
@@ -14,7 +14,7 @@ pub(crate) struct PartialOrdStructHandler;
 impl TraitHandler for PartialOrdStructHandler {
     #[inline]
     fn trait_meta_handler(
-        ast: &mut DeriveInput,
+        ast: &DeriveInput,
         token_stream: &mut proc_macro2::TokenStream,
         traits: &[Trait],
         meta: &Meta,
@@ -88,13 +88,14 @@ impl TraitHandler for PartialOrdStructHandler {
             &[quote! {::core::cmp::PartialEq}],
         );
 
-        let where_clause = ast.generics.make_where_clause();
+        let mut generics = ast.generics.clone();
+        let where_clause = generics.make_where_clause();
 
         for where_predicate in bound {
             where_clause.predicates.push(where_predicate);
         }
 
-        let (impl_generics, ty_generics, where_clause) = ast.generics.split_for_impl();
+        let (impl_generics, ty_generics, where_clause) = generics.split_for_impl();
 
         token_stream.extend(quote! {
             impl #impl_generics ::core::cmp::PartialOrd for #ident #ty_generics #where_clause {
diff --git a/tests/clone_struct.rs b/tests/clone_struct.rs
index 077d198..c59c602 100644
--- a/tests/clone_struct.rs
+++ b/tests/clone_struct.rs
@@ -199,3 +199,23 @@ fn bound_4() {
     }
     .clone();
 }
+
+#[cfg(feature = "Debug")]
+#[test]
+fn leaking_bounds() {
+    use core::{fmt::Debug, marker::PhantomData};
+
+    #[derive(Educe)]
+    #[educe(Debug(bound(T: Debug)), Clone(bound(T: Clone)))]
+    struct Struct<T> {
+        x: PhantomData<T>,
+    }
+
+    #[derive(Clone)]
+    struct NotDebug;
+
+    let a = Struct {
+        x: PhantomData::<NotDebug>
+    };
+    let _b = a.clone();
+}