https://github.com/python/cpython/commit/92c5de73b8d7526326c865b1a669b868f0d40c1e
commit: 92c5de73b8d7526326c865b1a669b868f0d40c1e
branch: main
author: Ayappan Perumal <[email protected]>
committer: serhiy-storchaka <[email protected]>
date: 2025-11-19T09:37:09+02:00
summary:
gh-141659: Fix bad file descriptor error in subprocess on AIX (GH-141660)
/proc/self does not exist on AIX.
files:
A
Misc/NEWS.d/next/Core_and_Builtins/2025-11-17-08-16-30.gh-issue-141659.QNi9Aj.rst
M Modules/_posixsubprocess.c
diff --git
a/Misc/NEWS.d/next/Core_and_Builtins/2025-11-17-08-16-30.gh-issue-141659.QNi9Aj.rst
b/Misc/NEWS.d/next/Core_and_Builtins/2025-11-17-08-16-30.gh-issue-141659.QNi9Aj.rst
new file mode 100644
index 00000000000000..eeb055c6012a12
--- /dev/null
+++
b/Misc/NEWS.d/next/Core_and_Builtins/2025-11-17-08-16-30.gh-issue-141659.QNi9Aj.rst
@@ -0,0 +1 @@
+Fix bad file descriptor errors from ``_posixsubprocess`` on AIX.
diff --git a/Modules/_posixsubprocess.c b/Modules/_posixsubprocess.c
index 0219a3360fd6b1..6f0a6d1d4e37fe 100644
--- a/Modules/_posixsubprocess.c
+++ b/Modules/_posixsubprocess.c
@@ -514,7 +514,13 @@ _close_open_fds_maybe_unsafe(int start_fd, int
*fds_to_keep,
proc_fd_dir = NULL;
else
#endif
+#if defined(_AIX)
+ char fd_path[PATH_MAX];
+ snprintf(fd_path, sizeof(fd_path), "/proc/%ld/fd", (long)getpid());
+ proc_fd_dir = opendir(fd_path);
+#else
proc_fd_dir = opendir(FD_DIR);
+#endif
if (!proc_fd_dir) {
/* No way to get a list of open fds. */
_close_range_except(start_fd, -1, fds_to_keep, fds_to_keep_len,
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