pypy/module/_posixsubprocess/test/apptest_subprocess.py::test_close_fds_true

def test_close_fds_true():
        fds = os.pipe()
    
        open_fds = set(fds)
        # add a bunch more fds
        for _ in range(9):
            fd = os.open("/dev/null", os.O_RDONLY)
            open_fds.add(fd)
    
        p = subprocess.Popen(['/usr/bin/env', 'python', os.path.join(directory, 'fd_status.py')], stdout=subprocess.PIPE, close_fds=True)
        output, ignored = p.communicate()
>       remaining_fds = set(map(int, output.split(b',')))
E       (application-level) ValueError: invalid literal for int() with base 10: b''

module/_posixsubprocess/test/apptest_subprocess.py:33: ValueError

builder: own-macos-arm64 build #1203

test: pypy/module/_posixsubprocess/test/apptest_subprocess/py/test_close_fds_true