Yes, it should work; but, strangely, it doesn’t:

#! perl
use strict;
use warnings;
use Data::Dump;
use Win32API::File qw(getLogicalDrives GetVolumeInformation);

my @drives = getLogicalDrives();

for my $d (@drives)
{
#   my @x = (undef) x 7;
    my @x;
    $#x = 6;
#   dd \@x;
    GetVolumeInformation($d, @x);
    print "$d $x[0] ($x[5])\n";
}

[download]

Output:

 1:16 >perl 1442_SoPW.pl
Modification of a read-only value attempted at C:/Perl/Strawberry/stra
+wberry-perl-5.22.0.1-64bit-PDL/perl/lib/Win32API/File.pm line 269.

 1:16 >

[download]

But with the line dd \@x; uncommented, it does work:

 1:16 >perl 1442_SoPW.pl
[undef, undef, undef, undef, undef, undef, undef]
C:\  (NTFS)
[undef, undef, undef, undef, undef, undef, undef]
D:\  ()
[undef, undef, undef, undef, undef, undef, undef]
E:\  ()

 1:16 >

[download]

What’s going on?

Athanasius <°(((>< contra mundum Iustus alius egestas vitae, eros Piratica,

In reply to Re^2: What does my @x= (undef)x7; do? by Athanasius
in thread What does my @x= (undef)x7; do? by gepebril69

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