select() portability nit.

p4raw-id: //depot/perl@16807

diff --git a/pod/perlfunc.pod b/pod/perlfunc.pod
index bfb91bb..0b40eb7 100644 (file)
--- a/pod/perlfunc.pod
+++ b/pod/perlfunc.pod
@@ -4251,6 +4251,9 @@ You can effect a sleep of 250 milliseconds this way:
 
     select(undef, undef, undef, 0.25);
 
+Note that whether C<select> gets restarted after signals (say, SIGALRM)
+is implementation-dependent.
+
 B<WARNING>: One should not attempt to mix buffered I/O (like C<read>
 or <FH>) with C<select>, except as permitted by POSIX, and even
 then only on POSIX systems.  You have to use C<sysread> instead.