From @samcv

"A-B C".split([" ", "-"]) when it tries
to swap something going via the IB2 sub. It gets a BOOTIntArray but
expects the arguments to be at least Any.

One further problem is that code like this causes a X​::Binding​::TypeCheck
exception that fails to generate its method due to the very lowlevel object
being used less-than-carefully.

This bug was introduced with this commit a day ago​:
rakudo/rakudo@9d497e9

timotimo has done some work on fixing part of this issue here​:
rakudo/rakudo@4707360a68

From @lizmat

Fixed completely with da99402e6cca51fea1 , seems samcv++ already made tests. So can be closed.

On 3 Mar 2017, at 07​:39, Samantha McVey (via RT) <perl6-bugs-followup@​perl.org> wrote​:

# New Ticket Created by Samantha McVey
# Please include the string​: [perl #​130904]
# in the subject line of all future correspondence about this issue.
# <URL​: https://rt-archive.perl.org/perl6/Ticket/Display.html?id=130904 >

"A-B C".split([" ", "-"]) when it tries
to swap something going via the IB2 sub. It gets a BOOTIntArray but
expects the arguments to be at least Any.

One further problem is that code like this causes a X​::Binding​::TypeCheck
exception that fails to generate its method due to the very lowlevel object
being used less-than-carefully.

This bug was introduced with this commit a day ago​:
rakudo/rakudo@9d497e9

timotimo has done some work on fixing part of this issue here​:
rakudo/rakudo@4707360a68

The RT System itself - Status changed from 'new' to 'open'

@zoffixznet - Status changed from 'open' to 'resolved'