From: Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com>
Date: Wed, 5 Oct 2022 10:20:32 +0000 (-0700)
Subject: gh-97758: Fix a crash in getpath_joinpath() called without arguments (GH-97759)
X-Git-Tag: v3.11.1~365
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=73e3510bdb2762e371e8545f1a4c68b821fcdcf2;p=thirdparty%2FPython%2Fcpython.git

gh-97758: Fix a crash in getpath_joinpath() called without arguments (GH-97759)

(cherry picked from commit f8cbd79d328d90443acabc41d246332c302c815a)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
---

diff --git a/Modules/getpath.c b/Modules/getpath.c
index be704adbde94..ceacf36d8968 100644
--- a/Modules/getpath.c
+++ b/Modules/getpath.c
@@ -261,7 +261,7 @@ getpath_joinpath(PyObject *Py_UNUSED(self), PyObject *args)
     }
     Py_ssize_t n = PyTuple_GET_SIZE(args);
     if (n == 0) {
-        return PyUnicode_FromString(NULL);
+        return PyUnicode_FromStringAndSize(NULL, 0);
     }
     /* Convert all parts to wchar and accumulate max final length */
     wchar_t **parts = (wchar_t **)PyMem_Malloc(n * sizeof(wchar_t *));