Hi Neil, Neil Jerram <[EMAIL PROTECTED]> writes:
> [EMAIL PROTECTED] (Ludovic Courtès) writes: > >> Hello, >> >> That "no duplicate" test in `popen.test' leaves a zombie behind it [0]. >> The fix would be to `waitpid' the process created by `open-input-pipe' >> (see attached patch), but that makes it hang, waiting for "sleep 999" to >> complete. > > I've attached an alternative possible solution, using feedback from > the parent to the child to avoid needing the long sleep. Good idea. It apparently fixes the problem. I think we also need that change in the second "no duplicate" test, don't we? > Unfortunately, though, I didn't manage to observe the zombie process > with the test as it was before. (How do I do this on GNU/Linux?) So > I don't really know whether this is a significant improvement. You can just run "./check-guile && pstree -u $USER". That shows whether there are any processes left (whether zombie or not). "ps" can then tell whether these are zombies, when marked with a `Z'. >> I'm not sure whether it's an indication that the bug was caught, or >> rather an indication that the test is broken, especially since I don't >> fully understand the bug that it's trying to catch. > > If waitpid fixes it, doesn't that point to the test being broken? Hmm, I don't know, why? Thanks, Ludovic.
