https://github.com/python/cpython/commit/59ab1edb0046addf7ff621cc293d2b19bf275cf5 commit: 59ab1edb0046addf7ff621cc293d2b19bf275cf5 branch: 3.14 author: Miss Islington (bot) <[email protected]> committer: gpshead <[email protected]> date: 2025-11-23T10:17:20Z summary:
[3.14] gh-98552: Revert (unneeded, already done elsewhere) "flush std streams in the multiprocessing forkserver before fork (GH-141849)" (GH-141871) (#141872) gh-98552: Revert (unneeded, already done elsewhere) "flush std streams in the multiprocessing forkserver before fork (GH-141849)" (GH-141871) Revert (unneeded, already done elsewhere) "gh-98552: flush std streams in the multiprocessing forkserver before fork (GH-141849)" This reverts commit 58badb1711e12b6e8b5240ab96cdd01b95012de7. (cherry picked from commit 614a28b3da1c898f29c34c14f59bf2d496dbd31d) Co-authored-by: Gregory P. Smith <[email protected]> files: D Misc/NEWS.d/next/Library/2025-11-22-18-00-38.gh-issue-98552.d5KNy-.rst M Lib/multiprocessing/forkserver.py diff --git a/Lib/multiprocessing/forkserver.py b/Lib/multiprocessing/forkserver.py index 8a4e8d835b0c91..cc8947c5e04fb1 100644 --- a/Lib/multiprocessing/forkserver.py +++ b/Lib/multiprocessing/forkserver.py @@ -326,7 +326,6 @@ def sigchld_handler(*_unused): len(fds))) child_r, child_w, *fds = fds s.close() - util._flush_std_streams() pid = os.fork() if pid == 0: # Child diff --git a/Misc/NEWS.d/next/Library/2025-11-22-18-00-38.gh-issue-98552.d5KNy-.rst b/Misc/NEWS.d/next/Library/2025-11-22-18-00-38.gh-issue-98552.d5KNy-.rst deleted file mode 100644 index 37a71ac1fff3f3..00000000000000 --- a/Misc/NEWS.d/next/Library/2025-11-22-18-00-38.gh-issue-98552.d5KNy-.rst +++ /dev/null @@ -1,4 +0,0 @@ -The :mod:`multiprocessing` forkserver process now flushes stdout and stderr -before it forks to avoid the confusion children inheriting any buffered but -not yet written output data. Normally there is none, but when using -:func:`multiprocessing.set_forkserver_preload` there *could* be. _______________________________________________ Python-checkins mailing list -- [email protected] To unsubscribe send an email to [email protected] https://mail.python.org/mailman3//lists/python-checkins.python.org Member address: [email protected]
