lldb input issue

Hi,

I'm seeing an issue with lldb: when I start it (without arguments) and
try to type commands, it looks like this:

$  lldb
(lldb) \U+7F68\U+7F65\U+7F6C\U+7F70\U+7F0A

So, basically, I cannot execute any command and cannot even exit from
its shell, only by ctrl-z and killing it.

This happens to me on today's -CURRENT / amd64.

I was wondering if that's an issue with my user's locale, but the
behavior is same for root.

Also, I can see exactly the same behavior with lldb on FreeBSD.

Is that some known issue or maybe configuration problem?

Thanks,

Roman Bogorodskiy