That's a fun one -
Yes - I was tempted to conclude that it must have been an insidious DOS attack launched by the sadistically evil and ever resourceful Anonymous Monk ;-)
I eventually found the answer to the question I was going to ask, with the aid of the perlapi documentation (last resort).
A pretty dumb question, anyway: "When is the condition
(SvTYPE(sv) == SVt_IV && !SvIOK(sv)) ever true ?"
Naively, I was thinking that if the SV is of type SVt_IV, then its IOK flag will inevitably be set.
(Not so, of course.)
Cheers,
Rob
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