https://github.com/python/cpython/commit/dbe5e3925ba23b5f79667f1995ccf175e6a588d6
commit: dbe5e3925ba23b5f79667f1995ccf175e6a588d6
branch: 3.13
author: Miss Islington (bot) <[email protected]>
committer: serhiy-storchaka <[email protected]>
date: 2025-09-15T14:29:57Z
summary:

[3.13] gh-138779: Use the dev_t converter for st_rdev (GH-138780) (GH-138927)

This allows to support device numbers larger than 2**63-1.
(cherry picked from commit 43013f72f0aadc5ee428aa5bdf6d949b4e79779a)

Co-authored-by: Serhiy Storchaka <[email protected]>

files:
A Misc/NEWS.d/next/Library/2025-09-11-11-09-28.gh-issue-138779.TNZnLr.rst
M Modules/posixmodule.c

diff --git 
a/Misc/NEWS.d/next/Library/2025-09-11-11-09-28.gh-issue-138779.TNZnLr.rst 
b/Misc/NEWS.d/next/Library/2025-09-11-11-09-28.gh-issue-138779.TNZnLr.rst
new file mode 100644
index 00000000000000..d54f21ffb89669
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2025-09-11-11-09-28.gh-issue-138779.TNZnLr.rst
@@ -0,0 +1,3 @@
+Support device numbers larger than ``2**63-1`` for the
+:attr:`~os.stat_result.st_rdev` field of the :class:`os.stat_result`
+structure.
diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
index 90d91c28fd28a4..b7d128b81304b0 100644
--- a/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@ -2666,7 +2666,7 @@ _pystat_fromstructstat(PyObject *module, STRUCT_STAT *st)
     SET_ITEM(ST_BLOCKS_IDX, PyLong_FromLong((long)st->st_blocks));
 #endif
 #ifdef HAVE_STRUCT_STAT_ST_RDEV
-    SET_ITEM(ST_RDEV_IDX, PyLong_FromLong((long)st->st_rdev));
+    SET_ITEM(ST_RDEV_IDX, _PyLong_FromDev(st->st_rdev));
 #endif
 #ifdef HAVE_STRUCT_STAT_ST_GEN
     SET_ITEM(ST_GEN_IDX, PyLong_FromLong((long)st->st_gen));

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