$ usr/perlbrew/perls/5.10t/bin/perl -Mv5.10 -e'
   open FOO, "<", ".bashrc" or die $!;
   opendir FOO, "." or die $!;
   print "File: ", scalar( <FOO> );
   say "Dir: ", scalar( readdir( FOO ) );
'
File: # If not running interactively, don't do anything
Dir: .gitconfig

$ usr/perlbrew/perls/5.10t/bin/perl -Mv5.10 -we'
   open FOO, "<", ".bashrc" or die $!;
   opendir FOO, "." or die $!;
   print "File: ", scalar( <FOO> );
   say "Dir: ", scalar( readdir( FOO ) );
'
Opening filehandle FOO also as a directory at -e line 3.
File: # If not running interactively, don't do anything
Dir: .gitconfig

$ usr/perlbrew/perls/5.12t/bin/perl -Mv5.10 -e'
   open FOO, "<", ".bashrc" or die $!;
   opendir FOO, "." or die $!;
   print "File: ", scalar( <FOO> );
   say "Dir: ", scalar( readdir( FOO ) );
'
Opening filehandle FOO also as a directory at -e line 3.
File: # If not running interactively, don't do anything
Dir: .gitconfig

$ usr/perlbrew/perls/5.24t/bin/perl -Mv5.10 -e'
   open FOO, "<", ".bashrc" or die $!;
   opendir FOO, "." or die $!;
   print "File: ", scalar( <FOO> );
   say "Dir: ", scalar( readdir( FOO ) );
'
Opening filehandle FOO also as a directory at -e line 3.
File: # If not running interactively, don't do anything
Dir: .python_history

$ usr/perlbrew/perls/5.26t/bin/perl -Mv5.10 -e'
   open FOO, "<", ".bashrc" or die $!;
   opendir FOO, "." or die $!;
   print "File: ", scalar( <FOO> );
   say "Dir: ", scalar( readdir( FOO ) );
'
Opening filehandle FOO also as a directory. This will be a fatal error in Perl 5.28 at -e line 3.
File: # If not running interactively, don't do anything
Dir: .gitconfig

$ usr/perlbrew/perls/5.28t/bin/perl -Mv5.10 -e'
   open FOO, "<", ".bashrc" or die $!;
   opendir FOO, "." or die $!;
   print "File: ", scalar( <FOO> );
   say "Dir: ", scalar( readdir( FOO ) );
'
Cannot open FOO as a dirhandle: it is already open as a filehandle at -e line 3.