#!/usr/bin/perl --
use strict; use warnings;
use File::Temp ();
use DB_File;

Main( @ARGV );
exit( 0 );

sub Main {
    my $temp = File::Temp->new()->filename;
    
    HitAndQuit( $temp, $_ ) for 1,2,3,4;
    HitAndQuit( $temp )     for 1 .. 1 + rand 12;
    
    unlink $temp or die "unlink $temp: $!";
}

sub HitAndQuit {
    my $file = shift;
    
    my $recno = DB_File::RECNOINFO->new();
    $recno->{flags} |= R_FIXEDLEN;
    $recno->{reclen} = 100;

    my $ofoo = tie my(@foo),
                    'DB_File',
                    $file,
                    O_RDWR|O_CREAT,
                    0600,
                    $recno
            or die "Cannot tie ($file): $!";
    
    @_ and push @foo, @_;
    
    print "length ", $ofoo->length, " scalar ", scalar @foo, "\n";
    
    undef $ofoo;
    untie @foo;
    return;
}