That kind of error occurs when one does 
my %hash = (
   'w',
   x => $x,
   y => $y,
   z => $z,
);

[download]
or 
my %hash = (
   w => w(),  # Returns <1 or >1 elements
   x => $x,
   y => $y,
   z => $z,
);

[download]

If so, it should give a "Odd number of elements in hash assignment" warning.

In this case, the following was assigned to the hash: 

(
    size => 374205,                 \ or vice-versa
    type => "image/jpeg",           /

    "charset=utf-8; Content-Transfer-Encoding: binary",  XXX

    headers => $headers,
    tempname => "/tmp/5xSW7Swasp",
    filename => "aaa.jpg",
)

[download]

In reply to Re: Catalyst::Request::Upload inside-out-object weirdness by ikegami
in thread Catalyst::Request::Upload inside-out-object weirdness by andye

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