https://github.com/python/cpython/commit/e329f74e7d24be6ae1782b5ab90e20723aa47bcd
commit: e329f74e7d24be6ae1782b5ab90e20723aa47bcd
branch: main
author: Adam Turner <9087854+aa-tur...@users.noreply.github.com>
committer: AA-Turner <9087854+aa-tur...@users.noreply.github.com>
date: 2025-04-10T01:51:56+01:00
summary:
GH-132330: Synchronise ``Doc/includes/typestruct.h`` with ``PyTypeObject``
(#132332)
files:
M Doc/includes/typestruct.h
diff --git a/Doc/includes/typestruct.h b/Doc/includes/typestruct.h
index ec939c28831c33..0d1d85ce9741b2 100644
--- a/Doc/includes/typestruct.h
+++ b/Doc/includes/typestruct.h
@@ -54,11 +54,11 @@ typedef struct _typeobject {
iternextfunc tp_iternext;
/* Attribute descriptor and subclassing stuff */
- struct PyMethodDef *tp_methods;
- struct PyMemberDef *tp_members;
- struct PyGetSetDef *tp_getset;
+ PyMethodDef *tp_methods;
+ PyMemberDef *tp_members;
+ PyGetSetDef *tp_getset;
// Strong reference on a heap type, borrowed reference on a static type
- struct _typeobject *tp_base;
+ PyTypeObject *tp_base;
PyObject *tp_dict;
descrgetfunc tp_descr_get;
descrsetfunc tp_descr_set;
@@ -70,12 +70,14 @@ typedef struct _typeobject {
inquiry tp_is_gc; /* For PyObject_IS_GC */
PyObject *tp_bases;
PyObject *tp_mro; /* method resolution order */
- PyObject *tp_cache;
- PyObject *tp_subclasses;
- PyObject *tp_weaklist;
+ PyObject *tp_cache; /* no longer used */
+ void *tp_subclasses; /* for static builtin types this is an index */
+ PyObject *tp_weaklist; /* not used for static builtin types */
destructor tp_del;
- /* Type attribute cache version tag. Added in version 2.6 */
+ /* Type attribute cache version tag. Added in version 2.6.
+ * If zero, the cache is invalid and must be initialized.
+ */
unsigned int tp_version_tag;
destructor tp_finalize;
@@ -83,4 +85,11 @@ typedef struct _typeobject {
/* bitset of which type-watchers care about this type */
unsigned char tp_watched;
+
+ /* Number of tp_version_tag values used.
+ * Set to _Py_ATTR_CACHE_UNUSED if the attribute cache is
+ * disabled for this type (e.g. due to custom MRO entries).
+ * Otherwise, limited to MAX_VERSIONS_PER_CLASS (defined elsewhere).
+ */
+ uint16_t tp_versions_used;
} PyTypeObject;
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