update object.h definitions for Python 3.12

Author: davidhewitt

newsfragments/3335.changed.md

@@ -0,0 +1 @@
+Update FFI definitions of `object.h` for Python 3.12 and up.

newsfragments/3335.fixed.md

@@ -0,0 +1 @@
+Fix reference counting of immortal objects on Python 3.12 betas.

pyo3-ffi/src/cpython/object.rs

@@ -1,4 +1,6 @@
 use crate::object;
+#[cfg(Py_3_8)]
+use crate::vectorcallfunc;
 use crate::{PyObject, Py_ssize_t};
 use std::mem;
 use std::os::raw::{c_char, c_int, c_uint, c_ulong, c_void};
@@ -112,14 +114,6 @@ mod bufferinfo {
 #[cfg(not(Py_3_11))]
 pub use self::bufferinfo::*;
 
-#[cfg(Py_3_8)]
-pub type vectorcallfunc = unsafe extern "C" fn(
-    callable: *mut PyObject,
-    args: *const *mut PyObject,
-    nargsf: libc::size_t,
-    kwnames: *mut PyObject,
-) -> *mut PyObject;
-
 #[repr(C)]
 #[derive(Copy, Clone)]
 pub struct PyNumberMethods {
@@ -275,7 +269,7 @@ pub struct PyTypeObject {
     pub tp_version_tag: c_uint,
     pub tp_finalize: Option<object::destructor>,
     #[cfg(Py_3_8)]
-    pub tp_vectorcall: Option<super::vectorcallfunc>,
+    pub tp_vectorcall: Option<vectorcallfunc>,
     #[cfg(Py_3_12)]
     pub tp_watched: c_char,
     #[cfg(any(all(PyPy, Py_3_8, not(Py_3_10)), all(not(PyPy), Py_3_8, not(Py_3_9))))]

pyo3-ffi/src/lib.rs

@@ -274,8 +274,6 @@ macro_rules! addr_of_mut_shim {
 pub use self::abstract_::*;
 pub use self::bltinmodule::*;
 pub use self::boolobject::*;
-#[cfg(Py_3_11)]
-pub use self::buffer::*;
 pub use self::bytearrayobject::*;
 pub use self::bytesobject::*;
 pub use self::ceval::*;
@@ -308,6 +306,8 @@ pub use self::objimpl::*;
 pub use self::osmodule::*;
 #[cfg(not(any(PyPy, Py_LIMITED_API, Py_3_10)))]
 pub use self::pyarena::*;
+#[cfg(Py_3_11)]
+pub use self::pybuffer::*;
 pub use self::pycapsule::*;
 pub use self::pyerrors::*;
 pub use self::pyframe::*;
@@ -335,8 +335,6 @@ mod abstract_;
 // skipped ast.h
 mod bltinmodule;
 mod boolobject;
-#[cfg(Py_3_11)]
-mod buffer;
 mod bytearrayobject;
 mod bytesobject;
 // skipped cellobject.h
@@ -387,8 +385,9 @@ mod osmodule;
 // skipped py_curses.h
 #[cfg(not(any(PyPy, Py_LIMITED_API, Py_3_10)))]
 mod pyarena;
+#[cfg(Py_3_11)]
+mod pybuffer;
 mod pycapsule;
-// skipped pydecimal.h
 // skipped pydtrace.h
 mod pyerrors;
 // skipped pyexpat.h
@@ -402,6 +401,7 @@ mod pylifecycle;
 mod pymem;
 mod pyport;
 mod pystate;
+// skipped pystats.h
 mod pythonrun;
 // skipped pystrhex.h
 // skipped pystrcmp.h