in reply to Re^2: Need help on hashes.
in thread Need help on hashes.

It's funny, I've gotten so accustomed to this behavior I'd stopped thinking of it as a special case, though I think you could make an argument that it the behavior itself isn't actually, though maybe the lack of warning is.

Let's be clear about what we mean by "recent" though. The behavior is both present and documented in Perl 5.00503 which was released in 1999.