makamaka / Text-CSV

When a header contains Cyrillic letters, it says the header is empty:

use strict;
use warnings;
use utf8;
# my $hdr = 'test';
my $hdr = 'тест';
open my $h, "<", \$hdr or die $!;

$ perl a.pl
Strings with code points over 0xFF may not be mapped into in-memory file handles
Invalid argument at a.pl line 6.

Line 1087 in e3b394e

open my $h, "<", $hr or croak ($self->SetDiag (1010));

I'm running perl-5.36.0.

Misleading error message (INI - the header is empty)