There's a bunch of things you're doing incorrectly:

• you my a global @fields and another within your while loop.
• you split your CSV into the local-to-the-while @fields and then push something onto it (remember, this @fields is going to "go away" when the while finishes.
• you split the input line (already parsed with Text::CSV_XS) on /|/. | is special in a regexp anyway (but I don't know why you're doing this anyway)

I'm not sure what output you're expecting, is this program OK?

use Text::CSV_XS;
my @data;

input ();

sub input {
     my @attrs = qw(_status _gwname _ac_ID_field);
     my $csv = Text::CSV_XS->new;
     while ( <DATA> ) {
        chomp;
        next if /^START/;
        $csv->parse($_);
        my @fields = $csv->fields;
        my %rec;
        @rec{@attrs} = @fields;
        push @data, \%rec;
    }
 }

foreach my $info (@data) {
    print "$info->{_status}\n";
}

__DATA__
adfadfasdfadsf,"adsf,asdf,adsf",adfasdf
adsfasdfasdfasdf,asdfasdfasdf,adsfasdf
adsfasdf,"adsf,adsf",adsfadsf
"asdfasdf,asdfasdf",adfasdf,asdfasdf
[download]

Output:

adfadfasdfadsf
adsfasdfasdfasdf
adsfasdf
asdfasdf,asdfasdf
[download]

If you're not already using Data::Dumper, you should be. It'll save you hours of frustration.

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