Thanks. I just reported it with perlbug half an hour ago at https://rt.perl.org/rt3/Ticket/Display.html?id=114984. I'll try your patch.

In reply to Re^2: "double free or corruption" in Perl 5.16.0 but not in 5.14.2 by mje
in thread "double free or corruption" in Perl 5.16.0 but not in 5.14.2 by mje

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