From @usev6

Maybe this should be merged into https://rt-archive.perl.org/perl6/Ticket/Display.html?id=75002?

From @usev6

Most of the tests in S02-types/array-shapes.t pass now (unfudged/adjusted with commit Raku/roast@4a5edf73db).

Maybe the other tests should be reviewed?

@usev6 - Status changed from 'new' to 'open'

From @usev6

On Sat, 21 Nov 2015 01​:18​:15 -0800, bartolin@​gmx.de wrote​:

Most of the tests in S02-types/array-shapes.t pass now
(unfudged/adjusted with commit
Raku/roast@4a5edf73db).

Maybe the other tests should be reviewed?

For the record​: These are the two remaining tests fudged with this ticket number ('todo')​:

$ ./perl6-m -e 'use Test; throws-like q[my @​arr.[8]], Exception, "array with dot form dies"'
  1..2
  not ok 1 - 'my @​arr.[8]' died
  # Failed test ''my @​arr.[8]' died'
  # at -e line 1
  ok 2 - # SKIP Code did not die, can not check exception
  # Looks like you failed 1 test of 2
not ok 1 - array with dot form dies
# Failed test 'array with dot form dies'
# at -e line 1

$ $ ./perl6-m -e 'use Test; throws-like q[my @​arr\ .[8]], Exception, "array with dot form and unspace dies"'
  1..2
  not ok 1 - 'my @​arr\ .[8]' died
  # Failed test ''my @​arr\ .[8]' died'
  # at -e line 1
  ok 2 - # SKIP Code did not die, can not check exception
  # Looks like you failed 1 test of 2
not ok 1 - array with dot form and unspace dies
# Failed test 'array with dot form and unspace dies'
# at -e line 1

I took a closer look at the two still failing tests today and I think they are wrong.

The tests were added to cover S09/Fixed-size arrays from the Synopsis back in 2008-07 with Raku/roast@3547fffe14.

I wasn't able to track the synopsis document back to 2008-07, but on 2008-11-26 the relevant text looked like this (cmp. https://github.com/Raku/old-design-docs/blob/68d062fcaa/S09.pod?plain=1#L191-L195):

Note that the square brackets are a compile-time declarator, not a run-time
operator, so you can't use the "dotted" form either:

my @values.[10];          # Error
my @keys\ .[10];          # Error

Only in 2010-09 the following clarification was done: Raku/old-design-docs@e8527c2291

commit e8527c229122b5e2f8ae581f3716bc99a5fd3118
Author: Carl Masak <cmasak@gmail.com>
Date:   Wed Sep 29 07:51:17 2010 +0200

    [S09] be more clear about what's an error
    
    Two of the three examples marked with "Error" turned out to actually
    be logical maybe-not-what-I-meant errors. Marked them as such.

diff --git a/S09-data.pod b/S09-data.pod
index 0a4ba5d..fcad94d 100644
--- a/S09-data.pod
+++ b/S09-data.pod
@@ -207,8 +207,8 @@ specification, but "unspace" is allowed:
 Note that the square brackets are a compile-time declarator, not a run-time
 operator, so you can't use the "dotted" form either:
 
-    my @values.[10];          # Error
-    my @keys\ .[10];          # Error
+    my @values.[10];          # An indexing, not a fixed-size declaration
+    my @keys\ .[10];          # Ditto
 
 Attempting to access an index outside an array's defined range will fail:

And it looks like the code from the two tests indeed just does an indexing operation (calling &postcircumfix:<[ ]> on the freshly initialized array), e.g.

$ ./rakudo-m -e 'my @arr.[2] = 42; dd @arr'
Array @arr = [Any, Any, 42]
$ ./rakudo-m -e 'my @arr\ .[2] = 42; dd @arr'
Array @arr = [Any, Any, 42]

Those are not shaped arrays at all.

I'll make a PR for roast to adjust the tests.
Edit: PR exists now: Raku/roast#841

I've merged the mentioned PR, so I'll close this issue as "resolved".