Similar behavior when you try to auto-open a string ref via @ARGV 
my $header_line = "Prepend this\n";
unshift @ARGV, \ $header_line;
print while <>;

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results in 
Can't open SCALAR(0x816411c): No such file or directory at ...

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Anno

In reply to Re: Clash between IO layers and "in memory" files? by Anno
in thread Clash between IO layers and "in memory" files? by blazar

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