From 6e56143bd3f265c454daf7ba1eee8c4e73f89886 Mon Sep 17 00:00:00 2001
From: Victor Stinner <vstinner@python.org>
Date: Wed, 5 Nov 2025 20:41:43 +0100
Subject: [PATCH] gh-83714: Fix stat_nanosecond_timestamp() for 32-bit time_t

---
 Modules/posixmodule.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
index ecda75ec6ab775..6390f1fc5fe24f 100644
--- a/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@ -2634,13 +2634,14 @@ _posix_free(void *module)
 static PyObject *
 stat_nanosecond_timestamp(_posixstate *state, time_t sec, unsigned long nsec)
 {
-#if SIZEOF_LONG >= 8
+#if SIZEOF_TIME_T == 4
+    return PyLong_FromLongLong(sec * SEC_TO_NS + nsec);
+#else
     /* 1677-09-21 00:12:44 to 2262-04-11 23:47:15 UTC inclusive */
     if ((LLONG_MIN/SEC_TO_NS) <= sec && sec <= (LLONG_MAX/SEC_TO_NS - 1)) {
         return PyLong_FromLongLong(sec * SEC_TO_NS + nsec);
     }
     else
-#endif
     {
         PyObject *ns_total = NULL;
         PyObject *s_in_ns = NULL;
@@ -2663,6 +2664,7 @@ stat_nanosecond_timestamp(_posixstate *state, time_t sec, unsigned long nsec)
         Py_XDECREF(s_in_ns);
         return ns_total;
     }
+#endif
 }
 
 static int