Safe temp file handling in perl?

[Steve McIntyre <stevem@chiark.greenend.org.uk>]

I've got a bug against netpbm for unsafe temporary file handling in
one of its utilities, which has prompted me to start to audit the rest
of the package. I can fairly easily make the shell scripts and C
programs it uses safe, but I don't see an obvious way to do it for the
perl scripts. I _could_ do something grotty using system() and
tempfile, but I'm hoping there's a better way.

Help, please?

-- 
Steve McIntyre, Cambridge, UK.                   stevem@chiark.greenend.org.uk
  Getting a SCSI chain working is perfectly simple if you remember that there
  must be exactly three terminations: one on one end of the cable, one on the
  far end, and the goat, terminated over the SCSI chain with a silver-handled
  knife whilst burning *black* candles. --- Anthony DeBoer