bpo-39245: Switch to public API for Vectorcall (GH-18460)

The bulk of this patch was generated automatically with:

    for name in \
        PyObject_Vectorcall \
        Py_TPFLAGS_HAVE_VECTORCALL \
        PyObject_VectorcallMethod \
        PyVectorcall_Function \
        PyObject_CallOneArg \
        PyObject_CallMethodNoArgs \
        PyObject_CallMethodOneArg \
    ;
    do
        echo $name
        git grep -lwz _$name | xargs -0 sed -i "s/\b_$name\b/$name/g"
    done

    old=_PyObject_FastCallDict
    new=PyObject_VectorcallDict
    git grep -lwz $old | xargs -0 sed -i "s/\b$old\b/$new/g"

and then cleaned up:

- Revert changes to in docs & news
- Revert changes to backcompat defines in headers
- Nudge misaligned comments

1 files changed, 8 insertions, 8 deletions

diff --git a/Modules/_io/iobase.c b/Modules/_io/iobase.c
index d51fc94..1ff3564 100644
--- a/Modules/_io/iobase.c
+++ b/Modules/_io/iobase.c
@@ -235,7 +235,7 @@ _io__IOBase_close_impl(PyObject *self)
         Py_RETURN_NONE;
     }
 
-    res = _PyObject_CallMethodNoArgs(self, _PyIO_str_flush);
+    res = PyObject_CallMethodNoArgs(self, _PyIO_str_flush);
 
     PyErr_Fetch(&exc, &val, &tb);
     rc = _PyObject_SetAttrId(self, &PyId___IOBase_closed, Py_True);
@@ -281,7 +281,7 @@ iobase_finalize(PyObject *self)
            finalization process. */
         if (_PyObject_SetAttrId(self, &PyId__finalizing, Py_True))
             PyErr_Clear();
-        res = _PyObject_CallMethodNoArgs((PyObject *)self, _PyIO_str_close);
+        res = PyObject_CallMethodNoArgs((PyObject *)self, _PyIO_str_close);
         /* Silencing I/O errors is bad, but printing spurious tracebacks is
            equally as bad, and potentially more frequent (because of
            shutdown issues). */
@@ -382,7 +382,7 @@ _io__IOBase_seekable_impl(PyObject *self)
 PyObject *
 _PyIOBase_check_seekable(PyObject *self, PyObject *args)
 {
-    PyObject *res  = _PyObject_CallMethodNoArgs(self, _PyIO_str_seekable);
+    PyObject *res  = PyObject_CallMethodNoArgs(self, _PyIO_str_seekable);
     if (res == NULL)
         return NULL;
     if (res != Py_True) {
@@ -415,7 +415,7 @@ _io__IOBase_readable_impl(PyObject *self)
 PyObject *
 _PyIOBase_check_readable(PyObject *self, PyObject *args)
 {
-    PyObject *res = _PyObject_CallMethodNoArgs(self, _PyIO_str_readable);
+    PyObject *res = PyObject_CallMethodNoArgs(self, _PyIO_str_readable);
     if (res == NULL)
         return NULL;
     if (res != Py_True) {
@@ -448,7 +448,7 @@ _io__IOBase_writable_impl(PyObject *self)
 PyObject *
 _PyIOBase_check_writable(PyObject *self, PyObject *args)
 {
-    PyObject *res = _PyObject_CallMethodNoArgs(self, _PyIO_str_writable);
+    PyObject *res = PyObject_CallMethodNoArgs(self, _PyIO_str_writable);
     if (res == NULL)
         return NULL;
     if (res != Py_True) {
@@ -477,7 +477,7 @@ iobase_enter(PyObject *self, PyObject *args)
 static PyObject *
 iobase_exit(PyObject *self, PyObject *args)
 {
-    return _PyObject_CallMethodNoArgs(self, _PyIO_str_close);
+    return PyObject_CallMethodNoArgs(self, _PyIO_str_close);
 }
 
 /* Lower-level APIs */
@@ -556,7 +556,7 @@ _io__IOBase_readline_impl(PyObject *self, Py_ssize_t limit)
         PyObject *b;
 
         if (peek != NULL) {
-            PyObject *readahead = _PyObject_CallOneArg(peek, _PyLong_One);
+            PyObject *readahead = PyObject_CallOneArg(peek, _PyLong_One);
             if (readahead == NULL) {
                 /* NOTE: PyErr_SetFromErrno() calls PyErr_CheckSignals()
                    when EINTR occurs so we needn't do it ourselves. */
@@ -655,7 +655,7 @@ iobase_iter(PyObject *self)
 static PyObject *
 iobase_iternext(PyObject *self)
 {
-    PyObject *line = _PyObject_CallMethodNoArgs(self, _PyIO_str_readline);
+    PyObject *line = PyObject_CallMethodNoArgs(self, _PyIO_str_readline);
 
     if (line == NULL)
         return NULL;