documentation tweaks from M. J. T. Guy, Micheal Schwern, and

Tim Meadowcroft

p4raw-id: //depot/perl@4666

1 files changed, 4 insertions, 0 deletions

diff --git a/pod/perlipc.pod b/pod/perlipc.pod
index e687304510..3034197e14 100644
--- a/pod/perlipc.pod
+++ b/pod/perlipc.pod
@@ -152,6 +152,10 @@ Here's an example:
     };
     if ($@ and $@ !~ /alarm clock restart/) { die }
 
+If the operation being timed out is system() or qx(), this technique
+is liable to generate zombies.    If this matters to you, you'll
+need to do your own fork() and exec(), and kill the errant child process.
+
 For more complex signal handling, you might see the standard POSIX
 module.  Lamentably, this is almost entirely undocumented, but
 the F<t/lib/posix.t> file from the Perl source distribution has some