Re^2: Strange behavior with List::Util qw{first} on perl >= 5.20

A git bisect appears to confirm that. The bug also still appears to be present in the latest v5.22.0-RC2.

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Re^3: Strange behavior with List::Util qw{first} on perl >= 5.20 by ikegami (Patriarch) on May 27, 2015 at 14:42 UTC
There's something fishy about `$_`. It's a TEMP with REFCNT=1. I believe that means it's a mortal. If so, that means noone claims a reference to `$_`, but `first` still uses it after the callback returns. This points to a bug in List::Util. That said, the inplace `lc($_)`^[1] should probably only happen in void context. This is the first I've ever heard about this!	[reply] [d/l] [select]