Fix documented signatures for C API functions. (GH-11236)
diff --git a/Doc/c-api/tuple.rst b/Doc/c-api/tuple.rst
index a66832c..20bf9f0 100644
--- a/Doc/c-api/tuple.rst
+++ b/Doc/c-api/tuple.rst
@@ -209,7 +209,7 @@
This function "steals" a reference to *o*.
-.. c:function:: PyObject* PyStructSequence_SET_ITEM(PyObject *p, Py_ssize_t *pos, PyObject *o)
+.. c:function:: void PyStructSequence_SET_ITEM(PyObject *p, Py_ssize_t *pos, PyObject *o)
Macro equivalent of :c:func:`PyStructSequence_SetItem`.
diff --git a/Doc/c-api/unicode.rst b/Doc/c-api/unicode.rst
index 92e22b1..39c067d 100644
--- a/Doc/c-api/unicode.rst
+++ b/Doc/c-api/unicode.rst
@@ -935,7 +935,7 @@
Return *NULL* on failure.
-.. c:function:: Py_ssize_t PyUnicode_AsWideChar(PyUnicodeObject *unicode, wchar_t *w, Py_ssize_t size)
+.. c:function:: Py_ssize_t PyUnicode_AsWideChar(PyObject *unicode, wchar_t *w, Py_ssize_t size)
Copy the Unicode object contents into the :c:type:`wchar_t` buffer *w*. At most
*size* :c:type:`wchar_t` characters are copied (excluding a possibly trailing
@@ -1346,7 +1346,7 @@
.. c:function:: PyObject* PyUnicode_EncodeRawUnicodeEscape(const Py_UNICODE *s, \
- Py_ssize_t size, const char *errors)
+ Py_ssize_t size)
Encode the :c:type:`Py_UNICODE` buffer of the given *size* using Raw-Unicode-Escape
and return a bytes object. Return *NULL* if an exception was raised by the codec.
@@ -1515,8 +1515,8 @@
Return *NULL* if an exception was raised by the codec.
-.. c:function:: PyObject* PyUnicode_DecodeMBCSStateful(const char *s, int size, \
- const char *errors, int *consumed)
+.. c:function:: PyObject* PyUnicode_DecodeMBCSStateful(const char *s, Py_ssize_t size, \
+ const char *errors, Py_ssize_t *consumed)
If *consumed* is *NULL*, behave like :c:func:`PyUnicode_DecodeMBCS`. If
*consumed* is not *NULL*, :c:func:`PyUnicode_DecodeMBCSStateful` will not decode