From 672e23abcdf4b36bb850f0f4b7a62ab7af4de46b Mon Sep 17 00:00:00 2001
From: Alex Gaynor <alex.gaynor@gmail.com>
Date: Tue, 26 Mar 2024 07:33:02 -0400
Subject: [PATCH] Attempt to mark various generated code with
 `#[automatically_derived]`

fixes #3989
---
 pyo3-macros-backend/src/method.rs  | 4 ++++
 pyo3-macros-backend/src/pyclass.rs | 2 ++
 src/exceptions.rs                  | 1 +
 3 files changed, 7 insertions(+)

diff --git a/pyo3-macros-backend/src/method.rs b/pyo3-macros-backend/src/method.rs
index 1a46d333c3b..30adcbf8e1a 100644
--- a/pyo3-macros-backend/src/method.rs
+++ b/pyo3-macros-backend/src/method.rs
@@ -621,6 +621,7 @@ impl<'a> FnSpec<'a> {
                 let init_holders = holders.init_holders(ctx);
 
                 quote! {
+                    #[automatically_derived]
                     unsafe fn #ident<'py>(
                         py: #pyo3_path::Python<'py>,
                         _slf: *mut #pyo3_path::ffi::PyObject,
@@ -642,6 +643,7 @@ impl<'a> FnSpec<'a> {
                 let check_gil_refs = holders.check_gil_refs();
 
                 quote! {
+                    #[automatically_derived]
                     unsafe fn #ident<'py>(
                         py: #pyo3_path::Python<'py>,
                         _slf: *mut #pyo3_path::ffi::PyObject,
@@ -667,6 +669,7 @@ impl<'a> FnSpec<'a> {
                 let check_gil_refs = holders.check_gil_refs();
 
                 quote! {
+                    #[automatically_derived]
                     unsafe fn #ident<'py>(
                         py: #pyo3_path::Python<'py>,
                         _slf: *mut #pyo3_path::ffi::PyObject,
@@ -693,6 +696,7 @@ impl<'a> FnSpec<'a> {
                 let init_holders = holders.init_holders(ctx);
                 let check_gil_refs = holders.check_gil_refs();
                 quote! {
+                    #[automatically_derived]
                     unsafe fn #ident(
                         py: #pyo3_path::Python<'_>,
                         _slf: *mut #pyo3_path::ffi::PyTypeObject,
diff --git a/pyo3-macros-backend/src/pyclass.rs b/pyo3-macros-backend/src/pyclass.rs
index 5122d205640..a6d6e60b3ea 100644
--- a/pyo3-macros-backend/src/pyclass.rs
+++ b/pyo3-macros-backend/src/pyclass.rs
@@ -1301,10 +1301,12 @@ fn impl_pytypeinfo(
 
     quote! {
         #[allow(deprecated)]
+        #[automatically_derived]
         unsafe impl #pyo3_path::type_object::HasPyGilRef for #cls {
             type AsRefTarget = #pyo3_path::PyCell<Self>;
         }
 
+        #[automatically_derived]
         unsafe impl #pyo3_path::type_object::PyTypeInfo for #cls {
             const NAME: &'static str = #cls_name;
             const MODULE: ::std::option::Option<&'static str> = #module;
diff --git a/src/exceptions.rs b/src/exceptions.rs
index add958257ab..3f00cbbf8d7 100644
--- a/src/exceptions.rs
+++ b/src/exceptions.rs
@@ -103,6 +103,7 @@ macro_rules! import_exception {
             #module=::std::option::Option::Some(stringify!($module))
         );
 
+        #[automatically_derived]
         impl $name {
             fn type_object_raw(py: $crate::Python<'_>) -> *mut $crate::ffi::PyTypeObject {
                 use $crate::sync::GILOnceCell;