From: Dong-hee Na <donghee.na@python.org>
Date: Mon, 11 Oct 2021 11:08:38 +0000 (+0900)
Subject: Handle error when PyUnicode_GetLength returns a negative value. (GH-28859)
X-Git-Tag: v3.11.0a2~247
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=560a79f94e94de66a18f2a5e4194c2fe51e2adf1;p=thirdparty%2FPython%2Fcpython.git

Handle error when PyUnicode_GetLength returns a negative value. (GH-28859)
---

diff --git a/Python/importdl.c b/Python/importdl.c
index 27ffc6428409..3d9cd1ac8673 100644
--- a/Python/importdl.c
+++ b/Python/importdl.c
@@ -42,6 +42,9 @@ get_encoded_name(PyObject *name, const char **hook_prefix) {
 
     /* Get the short name (substring after last dot) */
     name_len = PyUnicode_GetLength(name);
+    if (name_len < 0) {
+        return NULL;
+    }
     lastdot = PyUnicode_FindChar(name, '.', 0, name_len, -1);
     if (lastdot < -1) {
         return NULL;