Problem Description

The compiled PyPy interpreter is having problem executing subprocess.Popen(). The function calls os.fork(), then os.execvp() in the child process. Though a second process is forked, the execution seems to halt and not making any progress after that (CPU usage become 0).

Following test exposes the problem:

def test_subproc():
    import sys
    import subprocess

    target = sys.executable
    proc = subprocess.Popen(['file', target],
                            stdout=subprocess.PIPE,
                            stderr=subprocess.STDOUT)
    output = proc.communicate()[0]
    print output

    rc = proc.wait()
    assert rc == 0