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    use strict;
use warnings;
...
unix crlf encoding(UTF-16LE) utf8
31 32 33 0d 0a
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    { # 6
    open my $f, '<:pop:pop:unix:encoding(UTF-16LE):crlf', 'test';
...
Use of uninitialized value in unpack at crlf.pl line 49.

refcnt_dec: fd 0: 0 <= 0