Description of problem:

Calls to getppid() are cached. If the parent pid changes, new calls to getppid() does not show this.

Version-Release number of selected component (if applicable):

perl-5.8.0-88

How reproducible:


Steps to Reproduce:
1. fork, then let parent wait()
2. let child fork
3. child #2 calls getppid(). Returns pid of child #1, as expected.
4. child #2 exits. This will also exit the parent and set parent pid of child #2 to 1
5. child #2 calls getppid(). It still returns the same parent pid.
    
Actual results:

Old parent pid is returned from getppid() even when the parent pid has changed.

Expected results:

When the parent pid has changed, so should the return value from getppid()

Additional info: