[perl #54004] odd rakudo test failures

# New Ticket Created by  Chris Fields
# Please include the string:  [perl #54004]
# in the subject line of all future correspondence about this issue.
# <URL: http://rt.perl.org/rt3/Ticket/Display.html?id=54004 >


r27449 and r27451, Mac OS X 10.5, Intel.  Appears possibly related to
GC issues.

cjfields:perl6 cjfields$ perl6 t/01-sanity/07-for.t
1..9
ok 1
ok 2
ok 3
ok 4
ok 5
ok 6
Bus error

cjfields:perl6 cjfields$ parrot -G perl6.pbc t/01-sanity/07-for.t
1..9
ok 1
ok 2
ok 3
ok 4
ok 5
ok 6
ok 7
ok 8
ok 9

Hangs with 'parrot --runcore=gcdebug perl6.pbc t/01-sanity/07-for.t'.
This worked in previous day's checkout (before r27449).