Re^3: Spot the bug!

[tlm]

Agreed. But what about just using @_ = @_ instead of local @_? Assignment to @_ is what the docs prescribe for breaking the aliasing. Any reason for preferring one approach over the other?

[diotalevi]

I said local $@, not @_. There's no point to localizing @_, that's your input! You'd copy stuff out of it if you needed that behavior.