From @smls

Example​:

  sub f (*%args) {
  say .perl for %args.keys
  }
 
  my %typedhash := :{ a => 1, b => 2 };
 
  f |%typedhash;

Ouput​:

  "Str|a"
  "Str|b"

Expected output​:

  "a"
  "b"

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

From @smls

This bug is still present in

Rakudo version 2017.08-8-g753c9a5ea built on MoarVM version 2017.08.1-19-g151a2563
implementing Perl 6.c.

From @smls

Shorter test-case​:

  ➜ say :{ a => 1, b => 2 }.FLATTENABLE_HASH;
  {Str|a => a => 1, Str|b => b => 2}

Compare to a normal Hash which works fine​:

  ➜ say { a => 1, b => 2 }.FLATTENABLE_HASH;
  {a => 1, b => 2}

From @lizmat

Fixed with 6cec6b7218650aff1780a4dd , tests needed

On 26 Aug 2017, at 10​:35, Sam S. via RT <perl6-bugs-followup@​perl.org> wrote​:

Shorter test-case​:

➜ say :{ a => 1, b => 2 }.FLATTENABLE_HASH;
{Str|a => a => 1, Str|b => b => 2}

Compare to a normal Hash which works fine​:

➜ say { a => 1, b => 2 }.FLATTENABLE_HASH;
{a => 1, b => 2}

From @smls

Test added​: Raku/roast@8773139c37

Closing.

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