From @smls

`rotor` accepts an infinite Range or Array as the cycle​:

  say <a b c d e f>.rotor​: 1..*; # prints ((a) (b c) (d e f))
  say <a b c d e f>.rotor​: (1...*).Array; # prints ((a) (b c) (d e f))

But when given an infinite Seq or List, it hangs indefinitely​:

  say <a b c d e f>.rotor​: 1...*; # hangs
  say <a b c d e f>.rotor​: (1...*).List; # hangs

From @zoffixznet

To add, the cause is .is-lazy on slurpy args seems to attempt to reify the entire sequence​:

-> *@​a { @​a.is-lazy.say }(1…∞) # hangs

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

From @zoffixznet

On Sat, 03 Sep 2016 21​:03​:12 -0700, cpan@​zoffix.com wrote​:

To add, the cause is .is-lazy on slurpy args seems to attempt to reify
the entire sequence​:

-> *@​a { @​a.is-lazy.say }(1…∞) # hangs

The rotor hang fixed in rakudo/rakudo@d7b82149d31da0
The slurpy hang fixed in rakudo/rakudo@51b0aba8e8f

Marking testsneeded.

From @smls

bisectable revealed that the rotor issue was fixed by​:

  rakudo/rakudo@d7b8214

and the general *@​ slurpy issue was fixed by​:

  rakudo/rakudo@51b0aba

Both probably need tests.

From @zoffixznet

Tests​:
Raku/roast@846e330d96
Raku/roast@3fdfcc0ca3

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