ffi: small corrections

CHANGELOG.md

@@ -36,6 +36,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Fix "raw-ident" structs (e.g. `#[pyclass] struct r#RawName`) incorrectly having `r#` at the start of the class name created in Python. [#2395](https://github.com/PyO3/pyo3/pull/2395)
 - Fix case where `ValueError` without message could be raised by the `#[derive(FromPyObject)]` generated implementation for a tuple struct. [#2414](https://github.com/PyO3/pyo3/pull/2414)
 - Fix compile failure when using `#[pyo3(from_py_with = "pouf")]` in on a field in a `#[derive(FromPyObject)]` struct. [#2414](https://github.com/PyO3/pyo3/pull/2414)
+- Fix FFI definitions `_PyDateTime_BaseTime` lacking leading underscores in their names. [#2421](https://github.com/PyO3/pyo3/pull/2421)
+- Remove FFI definition `PyArena` on Python 3.10 and up. [#2421](https://github.com/PyO3/pyo3/pull/2421)
 
 ## [0.16.5] - 2022-05-15
 

pyo3-ffi/src/datetime.rs

@@ -42,7 +42,7 @@ pub struct PyDateTime_Delta {
 #[repr(C)]
 #[derive(Debug, Copy, Clone)]
 /// Structure representing a `datetime.time` without a `tzinfo` member.
-pub struct PyDateTime_BaseTime {
+pub struct _PyDateTime_BaseTime {
     pub ob_base: PyObject,
     #[cfg(not(PyPy))]
     pub hashcode: Py_hash_t,
@@ -60,7 +60,7 @@ pub struct PyDateTime_BaseTime {
 /// # Safety
 ///
 /// Care should be taken when reading the `tzinfo` field of this type. If the time does not have a
-/// tzinfo then the Python interpreter is free to allocate it as a [PyDateTime_BaseTime].
+/// tzinfo then the Python interpreter is free to allocate it as a [_PyDateTime_BaseTime].
 pub struct PyDateTime_Time {
     pub ob_base: PyObject,
     #[cfg(not(PyPy))]
@@ -87,7 +87,7 @@ pub struct PyDateTime_Date {
 #[repr(C)]
 #[derive(Debug, Copy, Clone)]
 /// Structure representing a `datetime.datetime` without a `tzinfo` member.
-pub struct PyDateTime_BaseDateTime {
+pub struct _PyDateTime_BaseDateTime {
     pub ob_base: PyObject,
     #[cfg(not(PyPy))]
     pub hashcode: Py_hash_t,
@@ -105,7 +105,7 @@ pub struct PyDateTime_BaseDateTime {
 /// # Safety
 ///
 /// Care should be taken when reading the `tzinfo` field of this type. If the datetime does not have a
-/// tzinfo then the Python interpreter is free to allocate it as a [PyDateTime_BaseDateTime].
+/// tzinfo then the Python interpreter is free to allocate it as a [_PyDateTime_BaseDateTime].
 pub struct PyDateTime_DateTime {
     pub ob_base: PyObject,
     #[cfg(not(PyPy))]

pyo3-ffi/src/lib.rs

@@ -316,7 +316,7 @@ pub use self::moduleobject::*;
 pub use self::object::*;
 pub use self::objimpl::*;
 pub use self::osmodule::*;
-#[cfg(not(Py_LIMITED_API))]
+#[cfg(not(any(Py_LIMITED_API, Py_3_10)))]
 pub use self::pyarena::*;
 pub use self::pycapsule::*;
 pub use self::pyerrors::*;
@@ -399,7 +399,7 @@ mod osmodule;
 // skipped picklebufobject.h
 // skipped pyctype.h
 // skipped py_curses.h
-#[cfg(not(Py_LIMITED_API))]
+#[cfg(not(any(Py_LIMITED_API, Py_3_10)))]
 mod pyarena;
 mod pycapsule;
 // skipped pydecimal.h

src/marker.rs

@@ -184,7 +184,7 @@ mod negative_impls {
     impl !Ungil for crate::ffi::PyCodeObject {}
     #[cfg(not(Py_LIMITED_API))]
     impl !Ungil for crate::ffi::PyDictKeysObject {}
-    #[cfg(not(Py_LIMITED_API))]
+    #[cfg(not(any(Py_LIMITED_API, Py_3_10)))]
     impl !Ungil for crate::ffi::PyArena {}
 }