It looks like this bug has been fixed with List::Util 1.14_1.

Interestingly, it was fixed by removing the call to SvREFCNT_inc(cv), and adding a LEAVESUB(cv) at the end of first() and reduce() subs. Can anyone shed some light on the reason why this works?

https://rt.perl.org/rt3/Ticket/Display.html?id=34267
(perl.org credentials required)

In reply to Re^3: Massive memory leak (AS 810) by cosimo
in thread Massive memory leak (AS 810) by BrowserUk

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