The questions will be:

  1. Why is this generating a diagnostic warning?
  2. What can I do about it?

I've inherited a huge thing that uses lots of dbmopen() and dbmclose(). I know this is now superceded by tie(), but I'd like to understand what is going on before I decide to go changing things willy-nilly.

The following snippet demonstrates something I'm running into when I turn on WARNINGS:

      
#!/usr/bin/perl -w

use strict;

my   $TSTFNM = "test-dbm-data";
my   $TSTACC = 0666;

my $opnret = dbmopen(my %TSTDBM, $TSTFNM, $TSTACC);
print "DBM Open:  '$opnret'\n";
my $cloret = dbmclose(%TSTDBM);

exit;

__END__

[download]

I get the following results:

      
DBM Open:  'AnyDBM_File=SCALAR(0x1982e8c)'
<BR>untie attempted while 1 inner references still exist at D:\Steve\D
+ev\test-dbm.pl line 10.

[download]

If I take out the perl -w, no problems reported.

  1. Why is this generating a diagnostic warning?
  2. What can I do about it?

I've poked around Google and done a search here at PerlMonks and I'm landing on neither a useful problem description nor a useful solution.

So I thought I'd pray for divine intervention. :-)

Many thanks for your time and assistance.

- Steven K. Mariner

In reply to Perl Warning On dbmclose() by marinersk

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