Since upgrading to Mac OS X Yosemite (perl 5.18), the perl debugger crashes when I try to use the tab completion on variable names. To test, run perl -d -e '42', and then at the debug prompt type x @A followed by a TAB character. The debug session will die with below error. Any idea what going on? This used to work fine on Mavericks (perl 5.16).

$ perl -d -e '42'

Loading DB routines from perl5db.pl version 1.39_10
Editor support available.

Enter h or 'h h' for help, or 'man perldebug' for more help.

main::(-e:1):    42
  DB<1> x @ACan't use string ("::") as a HASH ref while "strict refs" 
+in use at /System/Library/Perl/5.18/perl5db.pl line 9513.   
 at /System/Library/Perl/5.18/perl5db.pl line 9513.
    DB::db_complete('@A', 'x @A', 2) called at sub readline::completio
+n_matches line 10
    readline::completion_matches('CODE(0x7fcfa1bb1988)', '@A', 'x @A',
+ 2) called at sub readline::complete_internal line 27
    readline::complete_internal('\x{9}') called at sub readline::F_Com
+plete line 16
    readline::F_Complete(1, 9) called at /Library/Perl/5.18/Term/ReadL
+ine/readline.pm line 1669
    readline::readline('  DB<1> ') called at /Library/Perl/5.18/Term/R
+eadLine/Perl.pm line 11
    Term::ReadLine::Perl::readline('Term::ReadLine::Perl=ARRAY(0x7fcfa
+182c4b8)', '  DB<1> ') called at /System/Library/Perl/5.18/perl5db.pl
+ line 7281
    DB::readline('  DB<1> ') called at /System/Library/Perl/5.18/perl5
+db.pl line 1831
    DB::_DB__read_next_cmd(undef) called at /System/Library/Perl/5.18/
+perl5db.pl line 2741
    DB::DB called at -e line 1
Debugged program terminated.  Use q to quit or R to restart,
use o inhibit_exit to avoid stopping after program termination,
h q, h R or h o to get additional info.
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