PyO3 · davidhewitt · May 13, 2026 · May 12, 2026 · May 12, 2026 · May 12, 2026
diff --git a/newsfragments/6036.removed.md b/newsfragments/6036.removed.md
@@ -0,0 +1 @@
+Remove private FFI definitions `_PyFloat_CAST`, `_PyRun_SimpleFileObject`, `_PyRun_AnyFileObject`, `_PyRun_InteractiveLoopObject`, `_PyUnicode_CheckConsistency`, `_PyUnicode_COMPACT_DATA`, `_PyUnicode_NONCOMPACT_DATA`, `_PyUnicode_Ready`, and `_Py_HashBytes`.
diff --git a/pyo3-ffi-check/macro/src/lib.rs b/pyo3-ffi-check/macro/src/lib.rs
@@ -441,15 +441,6 @@ const EXCLUDED_SYMBOLS: &[&str] = &[
     "_PyEval_RequestCodeExtraIndex",
     // FIXME: probably outdated definitions that fail to build, need investigation,
     // temporarily here to make the build pass to get CI running
-    "_PyFloat_CAST",
-    "_PyObject_MakeTpCall",
-    "_PyRun_AnyFileObject",
-    "_PyRun_InteractiveLoopObject",
-    "_PyRun_SimpleFileObject",
-    "_PySequence_IterSearch",
-    "_PySet_NextEntry",
-    "_PyUnicode_CheckConsistency",
-    "_Py_CheckFunctionResult",
     "PyCode_New",
     "PyCode_NewWithPosOnlyArgs",
     "PyCFunction_New",
@@ -474,7 +465,6 @@ const EXCLUDED_SYMBOLS: &[&str] = &[
     "PyUnicode_EncodeUnicodeEscape",
     "PyUnicode_TransformDecimalToASCII",
     "PyUnicode_TranslateCharmap",
-    "_Py_HashBytes",
     // This symbol was not in headers but still public until Python 3.10,
     // should be able to remove this exclusion once support for 3.9 dropped
     "Py_GetArgcArgv",
@@ -491,10 +481,6 @@ const EXCLUDED_SYMBOLS: &[&str] = &[
     "PyOS_BeforeFork",
     "PyOS_AfterFork_Parent",
     "PyOS_AfterFork_Child",
-    // Private symbols that pyo3-ffi should stop exporting
-    "_PyUnicode_COMPACT_DATA",
-    "_PyUnicode_NONCOMPACT_DATA",
-    "_PyUnicode_Ready",
     // See https://github.com/python/cpython/pull/139166/changes#r3214904694
     "Py_IS_TYPE",
     "Py_SIZE",

diff --git a/pyo3-ffi/src/cpython/floatobject.rs b/pyo3-ffi/src/cpython/floatobject.rs
@@ -1,6 +1,8 @@
 #[cfg(GraalPy)]
 use crate::PyFloat_AsDouble;
-use crate::{PyFloat_Check, PyObject};
+#[cfg(not(GraalPy))]
+use crate::PyFloat_Check;
+use crate::PyObject;
 use core::ffi::c_double;
 
 #[repr(C)]
@@ -10,7 +12,8 @@ pub struct PyFloatObject {
 }
 
 #[inline]
-pub unsafe fn _PyFloat_CAST(op: *mut PyObject) -> *mut PyFloatObject {
+#[cfg(not(GraalPy))]
+unsafe fn _PyFloat_CAST(op: *mut PyObject) -> *mut PyFloatObject {
     debug_assert_eq!(PyFloat_Check(op), 1);
     op.cast()
 }

diff --git a/pyo3-ffi/src/cpython/pythonrun.rs b/pyo3-ffi/src/cpython/pythonrun.rs
@@ -9,24 +9,12 @@ use libc::FILE;
 
 extern_libpython! {
     pub fn PyRun_SimpleStringFlags(arg1: *const c_char, arg2: *mut PyCompilerFlags) -> c_int;
-    pub fn _PyRun_SimpleFileObject(
-        fp: *mut FILE,
-        filename: *mut PyObject,
-        closeit: c_int,
-        flags: *mut PyCompilerFlags,
-    ) -> c_int;
     pub fn PyRun_AnyFileExFlags(
         fp: *mut FILE,
         filename: *const c_char,
         closeit: c_int,
         flags: *mut PyCompilerFlags,
     ) -> c_int;
-    pub fn _PyRun_AnyFileObject(
-        fp: *mut FILE,
-        filename: *mut PyObject,
-        closeit: c_int,
-        flags: *mut PyCompilerFlags,
-    ) -> c_int;
     pub fn PyRun_SimpleFileExFlags(
         fp: *mut FILE,
         filename: *const c_char,
@@ -48,11 +36,6 @@ extern_libpython! {
         filename: *const c_char,
         flags: *mut PyCompilerFlags,
     ) -> c_int;
-    pub fn _PyRun_InteractiveLoopObject(
-        fp: *mut FILE,
-        filename: *mut PyObject,
-        flags: *mut PyCompilerFlags,
-    ) -> c_int;
 
     #[cfg(not(any(PyPy, GraalPy, Py_3_10)))]
     pub fn PyParser_ASTFromString(
@@ -94,9 +77,7 @@ extern_libpython! {
         errcode: *mut c_int,
         arena: *mut PyArena,
     ) -> *mut _mod;
-}
 
-extern_libpython! {
     #[cfg_attr(PyPy, link_name = "PyPyRun_StringFlags")]
     pub fn PyRun_StringFlags(
         arg1: *const c_char,
@@ -151,8 +132,6 @@ pub unsafe fn Py_CompileStringFlags(
     Py_CompileStringExFlags(string, p, s, f, -1)
 }
 
-// skipped _Py_SourceAsString
-
 extern_libpython! {
     #[cfg_attr(PyPy, link_name = "PyPyRun_String")]
     pub fn PyRun_String(

diff --git a/pyo3-ffi/src/cpython/unicodeobject.rs b/pyo3-ffi/src/cpython/unicodeobject.rs
@@ -458,11 +458,6 @@ pub struct PyUnicodeObject {
     pub data: PyUnicodeObjectData,
 }
 
-extern_libpython! {
-    #[cfg(not(any(PyPy, GraalPy)))]
-    pub fn _PyUnicode_CheckConsistency(op: *mut PyObject, check_content: c_int) -> c_int;
-}
-
 // skipped PyUnicode_GET_SIZE
 // skipped PyUnicode_GET_DATA_SIZE
 // skipped PyUnicode_AS_UNICODE
@@ -540,7 +535,7 @@ pub unsafe fn PyUnicode_KIND(op: *mut PyObject) -> c_uint {
 
 #[cfg(not(any(GraalPy, Py_3_14)))]
 #[inline]
-pub unsafe fn _PyUnicode_COMPACT_DATA(op: *mut PyObject) -> *mut c_void {
+unsafe fn _PyUnicode_COMPACT_DATA(op: *mut PyObject) -> *mut c_void {
     if PyUnicode_IS_ASCII(op) != 0 {
         (op as *mut PyASCIIObject).offset(1) as *mut c_void
     } else {
@@ -550,7 +545,7 @@ pub unsafe fn _PyUnicode_COMPACT_DATA(op: *mut PyObject) -> *mut c_void {
 
 #[cfg(not(any(GraalPy, PyPy)))]
 #[inline]
-pub unsafe fn _PyUnicode_NONCOMPACT_DATA(op: *mut PyObject) -> *mut c_void {
+unsafe fn _PyUnicode_NONCOMPACT_DATA(op: *mut PyObject) -> *mut c_void {
     debug_assert!(!(*(op as *mut PyUnicodeObject)).data.any.is_null());
 
     (*(op as *mut PyUnicodeObject)).data.any
@@ -628,7 +623,7 @@ extern_libpython! {
     #[cfg_attr(PyPy, link_name = "PyPyUnicode_New")]
     pub fn PyUnicode_New(size: Py_ssize_t, maxchar: Py_UCS4) -> *mut PyObject;
     #[cfg_attr(PyPy, link_name = "_PyPyUnicode_Ready")]
-    pub fn _PyUnicode_Ready(unicode: *mut PyObject) -> c_int;
+    fn _PyUnicode_Ready(unicode: *mut PyObject) -> c_int;
 
     // skipped _PyUnicode_Copy
 

diff --git a/pyo3-ffi/src/impl_/macros.rs b/pyo3-ffi/src/impl_/macros.rs
@@ -110,30 +110,6 @@ macro_rules! extern_libpython_maybe_private_fn {
     ) => {
         extern_libpython_cpython_private_fn! { $(#[$attrs])* $vis $name($($args)*) $(-> $ret)? }
     };
-    (
-        [_PyRun_AnyFileObject]
-        $(#[$attrs:meta])* $vis:vis fn $name:ident($($args:tt)*) $(-> $ret:ty)?
-    ) => {
-        extern_libpython_cpython_private_fn! { $(#[$attrs])* $vis $name($($args)*) $(-> $ret)? }
-    };
-    (
-        [_PyRun_InteractiveLoopObject]
-        $(#[$attrs:meta])* $vis:vis fn $name:ident($($args:tt)*) $(-> $ret:ty)?
-    ) => {
-        extern_libpython_cpython_private_fn! { $(#[$attrs])* $vis $name($($args)*) $(-> $ret)? }
-    };
-    (
-        [_PyRun_SimpleFileObject]
-        $(#[$attrs:meta])* $vis:vis fn $name:ident($($args:tt)*) $(-> $ret:ty)?
-    ) => {
-        extern_libpython_cpython_private_fn! { $(#[$attrs])* $vis $name($($args)*) $(-> $ret)? }
-    };
-    (
-        [_PyUnicode_CheckConsistency]
-        $(#[$attrs:meta])* $vis:vis fn $name:ident($($args:tt)*) $(-> $ret:ty)?
-    ) => {
-        extern_libpython_cpython_private_fn! { $(#[$attrs])* $vis $name($($args)*) $(-> $ret)? }
-    };
     (
         [_PyUnicode_Ready]
         $(#[$attrs:meta])* $vis:vis fn $name:ident($($args:tt)*) $(-> $ret:ty)?

diff --git a/pyo3-ffi/src/pyhash.rs b/pyo3-ffi/src/pyhash.rs
@@ -1,6 +1,6 @@
-#[cfg(not(any(Py_LIMITED_API, PyPy)))]
+#[cfg(not(any(Py_LIMITED_API, PyPy, Py_3_14)))]
 use crate::pyport::{Py_hash_t, Py_ssize_t};
-#[cfg(not(any(Py_LIMITED_API, PyPy)))]
+#[cfg(not(any(Py_LIMITED_API, PyPy, Py_3_14)))]
 use core::ffi::c_void;
 
 use core::ffi::{c_int, c_ulong};
@@ -10,8 +10,8 @@ extern_libpython! {
     // skipped non-limited _Py_HashPointer
     // skipped non-limited _Py_HashPointerRaw
 
-    #[cfg(not(any(Py_LIMITED_API, PyPy)))]
-    pub fn _Py_HashBytes(src: *const c_void, len: Py_ssize_t) -> Py_hash_t;
+    #[cfg(not(any(Py_LIMITED_API, PyPy, Py_3_14)))]
+    pub(crate) fn _Py_HashBytes(src: *const c_void, len: Py_ssize_t) -> Py_hash_t;
 }
 
 pub const _PyHASH_MULTIPLIER: c_ulong = 1000003;
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		Remove private FFI definitions `_PyFloat_CAST`, `_PyRun_SimpleFileObject`, `_PyRun_AnyFileObject`, `_PyRun_InteractiveLoopObject`, `_PyUnicode_CheckConsistency`, `_PyUnicode_COMPACT_DATA`, `_PyUnicode_NONCOMPACT_DATA`, `_PyUnicode_Ready`, and `_Py_HashBytes`.