`Pair.kv`/`.keys`/.`values` dies if either the key or the value is `Mu`

[p6rt]

Migrated from rt.perl.org#131962 (status was 'resolved')

Searchable as RT131962$

[p6rt]

From @smls

  ➜ say (4 => Mu).kv;
  Type check failed in binding to parameter 'val2';
  expected Any but got Mu (Mu)

  ➜ say ((Mu) => 4).kv;
  Type check failed in binding to parameter 'val1';
  expected Any but got Mu (Mu)

  ➜ say ((Mu) => Mu).kv;
  Type check failed in binding to parameter 'val1';
  expected Any but got Mu (Mu)

`Pair` methods that are affected​:
  .kv
  .keys
  .values

`Pair` methods that NOT are affected​:
  .key
  .value
  .pairs
  .antipairs
  .Str
  .gist
  .perl

bisectable finds that this was broken two weeks ago​:

  https://gist.github.com/Whateverable/03a10377df0b3e0409eaa69330750868

rakudo/rakudo@30584da

[p6rt]

From @lizmat

Fixed with a5014fd0855545cc083b3590 , tests needed.

On 26 Aug 2017, at 13​:10, Sam S. (via RT) <perl6-bugs-followup@​perl.org> wrote​:

# New Ticket Created by Sam S.
# Please include the string​: [perl #​131962]
# in the subject line of all future correspondence about this issue.
# <URL​: https://rt-archive.perl.org/perl6/Ticket/Display.html?id=131962 >

➜  say \(4 => Mu\)\.kv;
Type check failed in binding to parameter 'val2';
expected Any but got Mu \(Mu\)

➜  say \(\(Mu\) => 4\)\.kv;
Type check failed in binding to parameter 'val1';
expected Any but got Mu \(Mu\)

➜  say \(\(Mu\) => Mu\)\.kv;
Type check failed in binding to parameter 'val1';
expected Any but got Mu \(Mu\)

`Pair` methods that are affected​:
.kv
.keys
.values

`Pair` methods that NOT are affected​:
.key
.value
.pairs
.antipairs
.Str
.gist
.perl

bisectable finds that this was broken two weeks ago​:

https://gist.github.com/Whateverable/03a10377df0b3e0409eaa69330750868

rakudo/rakudo@30584da

[p6rt]

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

[p6rt]

From @skids

On Sat, 26 Aug 2017 06​:17​:15 -0700, elizabeth wrote​:

Fixed with a5014fd0855545cc083b3590 , tests needed.

On 26 Aug 2017, at 13​:10, Sam S. (via RT) <perl6-bugs-
followup@​perl.org> wrote​:

# New Ticket Created by Sam S.
# Please include the string​: [perl #​131962]
# in the subject line of all future correspondence about this issue.
# <URL​: https://rt-archive.perl.org/perl6/Ticket/Display.html?id=131962 >

➜ say (4 => Mu).kv;
Type check failed in binding to parameter 'val2';
expected Any but got Mu (Mu)

➜ say ((Mu) => 4).kv;
Type check failed in binding to parameter 'val1';
expected Any but got Mu (Mu)

➜ say ((Mu) => Mu).kv;
Type check failed in binding to parameter 'val1';
expected Any but got Mu (Mu)

`Pair` methods that are affected​:
.kv
.keys
.values

`Pair` methods that NOT are affected​:
.key
.value
.pairs
.antipairs
.Str
.gist
.perl

bisectable finds that this was broken two weeks ago​:

https://gist.github.com/Whateverable/03a10377df0b3e0409eaa69330750868

rakudo/rakudo@30584da

Tests added in roast 8fdce37ba, so resolving.

[p6rt]

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