Use Py_ssize_t type for number of arguments

Issue #27848: use Py_ssize_t rather than C int for the number of function
positional and keyword arguments.

1 files changed, 7 insertions, 2 deletions

diff --git a/Objects/methodobject.c b/Objects/methodobject.c
index edb2fc013c..394f1f4502 100644
--- a/Objects/methodobject.c
+++ b/Objects/methodobject.c
@@ -146,15 +146,20 @@ PyCFunction_Call(PyObject *func, PyObject *args, PyObject *kwds)
 }
 
 PyObject *
-_PyCFunction_FastCallDict(PyObject *func_obj, PyObject **args, int nargs,
+_PyCFunction_FastCallDict(PyObject *func_obj, PyObject **args, Py_ssize_t nargs,
                           PyObject *kwargs)
 {
-    PyCFunctionObject* func = (PyCFunctionObject*)func_obj;
+    PyCFunctionObject *func = (PyCFunctionObject*)func_obj;
     PyCFunction meth = PyCFunction_GET_FUNCTION(func);
     PyObject *self = PyCFunction_GET_SELF(func);
     PyObject *result;
     int flags;
 
+    assert(func != NULL);
+    assert(nargs >= 0);
+    assert(nargs == 0 || args != NULL);
+    assert(kwargs == NULL || PyDict_Check(kwargs));
+
     /* _PyCFunction_FastCallDict() must not be called with an exception set,
        because it may clear it (directly or indirectly) and so the
        caller loses its exception */