[perl #127653] [BUG] Could not find symbol '&EXPORT'

[Brian S. Julin via RT]

On Sun, 10 Jul 2016 16:19:34 -0700, c...@zoffix.com wrote:
> Not sure if it's a bug, but it's still present in Rakudo version
> 2016.06-154-g55c359e built on MoarVM version 2016.06-9-g8fc21d5
> 
> I tried using $module instead of module and this was the result:
> 
> zoffix@VirtualBox:/tmp/tmp.yz8WXXEuu2$ cat x.p6
> use v6;
> use Test;
> module Foo::Bar {
>    sub first is export {};
>    sub second is export {};
> }
> 
> plan 2;
> 
> is Foo::Bar::EXPORT::ALL::.elems, 2;
> 
> my $module = Foo::Bar;
> 
> is Foo::Bar::.keys, $module::.keys;
> 
> diag $module::EXPORT::.keys;
>  zoffix@VirtualBox:/tmp/tmp.yz8WXXEuu2$ perl6 x.p6
> 1..2
>  ok 1 -
>  not ok 2 -
> 
> # Failed test at x.p6 line 15
> # expected: ''
> #      got: 'EXPORT'
> 
> # Looks like you failed 1 test of 2
>  zoffix@VirtualBox:/tmp/tmp.yz8WXXEuu2$


Is $module:: valid syntax for that?  Would that not try to look up
a scalar variable in a module called 'module'?

As for the original, it seems the tests succeed (at least on current
rakudo) and the diag complains about EXPORT:

(01:11:53 AM) skids: m: use v6; use Test; module Foo::Bar { sub first is export 
{}; sub second is export {}; }; plan 2; is Foo::Bar::EXPORT::ALL::.elems, 2; my 
\module = Foo::Bar; is Foo::Bar::.keys, module::.keys; diag 
module::EXPORT::.keys; say Foo::Bar::EXPORT::ALL::.keys; say Foo::Bar::.keys; 
say module::.keys;
(01:11:54 AM) camelia: rakudo-moar 1aee9a: OUTPUT: «1..2␤ok 1 - ␤ok 2 - ␤Could 
not find symbol '&EXPORT'␤  in block <unit> at <tmp> line 1␤␤»

...and it quite possibly should.  I don't think that constant definitions
are so macroish that they get resolved as name parts:

$ perl6 -e 'use v6; module Foo { our constant Bar = 42 }; Foo::Bar.say; my 
\module = Foo; module::<Bar>.say; module::Bar.say'
42
42
Could not find symbol '&Bar'
  in block <unit> at -e line 1

...the postfix :: may be a special case, but I can't seem to find where that 
might be specced.
Perhaps safest to stick to .WHO.