``test_os`` raises a ``DeprecationWarning``

[Eclips4]

Bug report

Bug description:

Trace:

 ./python.exe -m test -R 3:3 test_os
Using random seed: 650307952
0:00:00 load avg: 1.89 Run 1 test sequentially
0:00:00 load avg: 1.89 [1/1] test_os
beginning 6 repetitions
123456
/Users/admin/Projects/cpython/Lib/os.py:861: DeprecationWarning: This process (pid=49784) is multi-threaded, use of fork() may lead to deadlocks in the child.
  pid = fork()
./Users/admin/Projects/cpython/Lib/os.py:861: DeprecationWarning: This process (pid=49784) is multi-threaded, use of fork() may lead to deadlocks in the child.
  pid = fork()
./Users/admin/Projects/cpython/Lib/os.py:861: DeprecationWarning: This process (pid=49784) is multi-threaded, use of fork() may lead to deadlocks in the child.
  pid = fork()
./Users/admin/Projects/cpython/Lib/os.py:861: DeprecationWarning: This process (pid=49784) is multi-threaded, use of fork() may lead to deadlocks in the child.
  pid = fork()
./Users/admin/Projects/cpython/Lib/os.py:861: DeprecationWarning: This process (pid=49784) is multi-threaded, use of fork() may lead to deadlocks in the child.
  pid = fork()
./Users/admin/Projects/cpython/Lib/os.py:861: DeprecationWarning: This process (pid=49784) is multi-threaded, use of fork() may lead to deadlocks in the child.
  pid = fork()
.

== Tests result: SUCCESS ==

1 test OK.

Total duration: 10.0 sec
Total tests: run=265 skipped=84
Total test files: run=1/1
Result: SUCCESS

CPython versions tested on:

CPython main branch

Operating systems tested on:

macOS

Linked PRs

• gh-114199: Run some tests in new process to dismiss deprecated warning #116108

[mtelka]

I think this is a duplicate of #114041.

[StanFromIreland]

I can no longer reproduce:

$ ./python -m test -R 3:3 test_os
Using random seed: 1246237566
0:00:00 load avg: 0.48 Run 1 test sequentially in a single process
0:00:00 load avg: 0.48 [1/1] test_os
beginning 6 repetitions. Showing number of leaks (. for 0 or less, X for 10 or more)
123:456
XX. ...
0:01:19 load avg: 0.38 [1/1] test_os passed in 1 min 19 sec

== Tests result: SUCCESS ==

1 test OK.

Total duration: 1 min 19 sec
Total tests: run=376 (filtered) skipped=55
Total test files: run=1/1 (filtered)
Result: SUCCESS