http://www.perlmonks.org?node_id=241444


in reply to Re: special magic in "%!" ?
in thread special magic in "%!" ?

The reference to %! requires Errno.pmc, then if that fails, Errno.pm.

Compare:

perl -le 'print for keys ::'
to
perl -le 'print for keys(%!); print for keys ::'
update: This is perl, v5.8.0 built for i686-linux