I think this bug should be closed as invalid. There is a subtle point involving the FD_CLOEXEC flag, which newer versions of Python seem to be setting on all file descriptors. This appears to defeat the “close_fds” and “pass_fds” arguments to subprocess.Popen, leading to the apparent bug: the file descriptors are being passed intact to the child process, but are then immediately closed when another program is exec’d. But of course it is possible to manually clear FD_CLOEXEC yourself, e.g.
fcntl.fcntl(child1.stdin.fileno(), fcntl.F_SETFD, fcntl.fcntl(child1.stdin.fileno(), fcntl.F_GETFD) & ~fcntl.FD_CLOEXEC) and when you do this, the “bug” no longer appears. -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
