[Python-checkins] bpo-20291: Fix MSVC warnings in getargs.c (GH-27211)

[isidentical]

https://github.com/python/cpython/commit/f88e138a1aa3b9a9e013963e4fd7d5cce6a0b85c
commit: f88e138a1aa3b9a9e013963e4fd7d5cce6a0b85c
branch: main
author: Ken Jin <28750310+Fidget-Spinner at users.noreply.github.com>
committer: isidentical <isidentical at gmail.com>
date: 2021-07-17T14:09:18+03:00
summary:

bpo-20291: Fix MSVC warnings in getargs.c (GH-27211)

* Fix MSVC warnings in getargs.c

* apply suggestions

Co-Authored-By: Batuhan Taskaya <batuhan at python.org>

Co-authored-by: Batuhan Taskaya <batuhan at python.org>

files:
M Python/getargs.c

diff --git a/Python/getargs.c b/Python/getargs.c
index 330f2b456b387..3fab3b5efefc2 100644
--- a/Python/getargs.c
+++ b/Python/getargs.c
@@ -2552,7 +2552,8 @@ _PyArg_UnpackKeywordsWithVararg(PyObject *const *args, Py_ssize_t nargs,
     }
 
     /* copy keyword args using kwtuple to drive process */
-    for (i = Py_MAX((int)nargs, posonly) - varargssize; i < maxargs; i++) {
+    for (i = Py_MAX((int)nargs, posonly) -
+         Py_SAFE_DOWNCAST(varargssize, Py_ssize_t, int); i < maxargs; i++) {
         if (nkwargs) {
             keyword = PyTuple_GET_ITEM(kwtuple, i - posonly);
             if (kwargs != NULL) {