From f10c2fdc39f7651b2acf602f41410c1b6e0bb85e Mon Sep 17 00:00:00 2001
From: "Ralf W. Grosse-Kunstleve" <rwgk@google.com>
Date: Fri, 5 Aug 2022 08:09:16 -0700
Subject: [PATCH] Undo attr.h, detail/class.h changes made under PR #3923. See
 https://github.com/python/cpython/issues/92678 for background.

---
 include/pybind11/attr.h         | 4 ----
 include/pybind11/detail/class.h | 4 ----
 2 files changed, 8 deletions(-)

diff --git a/include/pybind11/attr.h b/include/pybind11/attr.h
index db7cd8efff..65e223a36a 100644
--- a/include/pybind11/attr.h
+++ b/include/pybind11/attr.h
@@ -345,11 +345,7 @@ struct type_record {
 
         bases.append((PyObject *) base_info->type);
 
-#if PY_VERSION_HEX < 0x030B0000
         dynamic_attr |= base_info->type->tp_dictoffset != 0;
-#else
-        dynamic_attr |= (base_info->type->tp_flags & Py_TPFLAGS_MANAGED_DICT) != 0;
-#endif
 
         if (caster) {
             base_info->implicit_casts.emplace_back(type, caster);
diff --git a/include/pybind11/detail/class.h b/include/pybind11/detail/class.h
index a98e5e5414..fc6d73f02d 100644
--- a/include/pybind11/detail/class.h
+++ b/include/pybind11/detail/class.h
@@ -524,12 +524,8 @@ extern "C" inline int pybind11_clear(PyObject *self) {
 inline void enable_dynamic_attributes(PyHeapTypeObject *heap_type) {
     auto *type = &heap_type->ht_type;
     type->tp_flags |= Py_TPFLAGS_HAVE_GC;
-#if PY_VERSION_HEX < 0x030B0000
     type->tp_dictoffset = type->tp_basicsize;           // place dict at the end
     type->tp_basicsize += (ssize_t) sizeof(PyObject *); // and allocate enough space for it
-#else
-    type->tp_flags |= Py_TPFLAGS_MANAGED_DICT;
-#endif
     type->tp_traverse = pybind11_traverse;
     type->tp_clear = pybind11_clear;