bisectable6

query

old=2018.01 my @a = 3, 4, 5; @a[-5..*]:delete; say @a; say @a.elems

result

Bisecting: 2510 revisions left to test after this (roughly 11 steps)
[edb530815508ea40f388df4714e304879d60ce69] Remove unnecessary comma
»»»»» Testing edb530815508ea40f388df4714e304879d60ce69
»»»»» Script output:
[3 4 5]
3

»»»»» Script exit code: 0
»»»»» Bisecting by output
»»»»» Output on “old” revision is:
[]
0

»»»»» The output is different
»»»»» Therefore, marking this revision as “new”
»»»»» -------------------------------------------------------------------------
»»»»» Testing bc2ca535f1a394dc6e71af9cbba370fe1f89c96b
»»»»» Script output:
[3 4 5]
3

»»»»» Script exit code: 0
»»»»» Bisecting by output
»»»»» Output on “old” revision is:
[]
0

»»»»» The output is different
»»»»» Therefore, marking this revision as “new”
»»»»» -------------------------------------------------------------------------
»»»»» Testing 344a64e9876c587b5c97c6bf007f29af370a4867
»»»»» Script output:
[3 4 5]
3

»»»»» Script exit code: 0
»»»»» Bisecting by output
»»»»» Output on “old” revision is:
[]
0

»»»»» The output is different
»»»»» Therefore, marking this revision as “new”
»»»»» -------------------------------------------------------------------------
»»»»» Testing 79a95b49a33b460d9c425bd71b316ac313bef9c5
»»»»» Script output:
[3 4 5]
3

»»»»» Script exit code: 0
»»»»» Bisecting by output
»»»»» Output on “old” revision is:
[]
0

»»»»» The output is different
»»»»» Therefore, marking this revision as “new”
»»»»» -------------------------------------------------------------------------
»»»»» Testing abea32429be3c04379d731299cc4d5fd67471aed
»»»»» Script output:
[3 4 5]
3

»»»»» Script exit code: 0
»»»»» Bisecting by output
»»»»» Output on “old” revision is:
[]
0

»»»»» The output is different
»»»»» Therefore, marking this revision as “new”
»»»»» -------------------------------------------------------------------------
»»»»» Testing 646266ae70a6b759637e5a9da6fcf8778840fb1d
»»»»» Script output:
[]
0

»»»»» Script exit code: 0
»»»»» Bisecting by output
»»»»» Output on “old” revision is:
[]
0

»»»»» The output is identical
»»»»» Therefore, marking this revision as “old”
»»»»» -------------------------------------------------------------------------
»»»»» Testing 02d2e2cafd06d6793a8a80f06a071bdc36d14526
»»»»» Script output:
[]
0

»»»»» Script exit code: 0
»»»»» Bisecting by output
»»»»» Output on “old” revision is:
[]
0

»»»»» The output is identical
»»»»» Therefore, marking this revision as “old”
»»»»» -------------------------------------------------------------------------
»»»»» Testing eca2bb999edb6f6f0d9894997ecd81f50a8927c9
»»»»» Script output:
[]
0

»»»»» Script exit code: 0
»»»»» Bisecting by output
»»»»» Output on “old” revision is:
[]
0

»»»»» The output is identical
»»»»» Therefore, marking this revision as “old”
»»»»» -------------------------------------------------------------------------
»»»»» Testing 314eae348da4fca218dad38cadc91822e578684f
»»»»» Script output:
[]
0

»»»»» Script exit code: 0
»»»»» Bisecting by output
»»»»» Output on “old” revision is:
[]
0

»»»»» The output is identical
»»»»» Therefore, marking this revision as “old”
»»»»» -------------------------------------------------------------------------
»»»»» Testing 94a3fdb824e346e605349b04b2f3a4ae25fe2d1a
»»»»» Script output:
[3 4 5]
3

»»»»» Script exit code: 0
»»»»» Bisecting by output
»»»»» Output on “old” revision is:
[]
0

»»»»» The output is different
»»»»» Therefore, marking this revision as “new”
»»»»» -------------------------------------------------------------------------
»»»»» Testing a4aceb08ca2f30714f674fd8ef04c43e1e17a4aa
»»»»» Script output:
[3 4 5]
3

»»»»» Script exit code: 0
»»»»» Bisecting by output
»»»»» Output on “old” revision is:
[]
0

»»»»» The output is different
»»»»» Therefore, marking this revision as “new”
»»»»» -------------------------------------------------------------------------
»»»»» Testing f330d7fc44d76258e651c9114360d08f929b25b9
»»»»» Script output:
[3 4 5]
3

»»»»» Script exit code: 0
»»»»» Bisecting by output
»»»»» Output on “old” revision is:
[]
0

»»»»» The output is different
»»»»» Therefore, marking this revision as “new”
f330d7fc44d76258e651c9114360d08f929b25b9 is the first new commit
commit f330d7fc44d76258e651c9114360d08f929b25b9
Author: Zoffix Znet <cpan@zoffix.com>
Date:   Thu Feb 8 19:53:39 2018 -0500

    Fix drift when reusing lazy iterables for indexing
    
    Phixes https://github.com/rakudo/rakudo/issues/1320
    
    Currently, we .push-until-lazy before we begin checking whether
    for existence of elements to know when to stop. However, this
    causes a "drift" when the lazy iterable is reused as .push-until-lazy
    reifies an extra element each time to figure out if it's still lazy.
    The next time we re-use this iterable for indexing, that extra element
    ends up being past end of the iterable we're indexing; with an extra
    such element added on each reuse.
    
    Fix by checking if iterable is lazy and checking all positions for
    existence for such iterables each time.

:040000 040000 b836629bb233c3c18ede3e828ee6bde293a9022b 19a52013967212b8ee4a2da216902b43100be38c M	src