From krunen@gmail.com

krunen@​server​:~/src/rakudo$ ./perl6 -v
This is perl6 version 2014.08-6-gc793d80 built on MoarVM version
2014.08-37-g74883b4

krunen@​server​:~/src/rakudo$ ./perl6 -e "sub a{...}; sub a{42};"
===SORRY!=== Error while compiling -e
Redeclaration of routine a
at -e​:1

Had a look in Actions.nqp where the exception is thrown (line 2586++)​:

  if $outer.symbol($name) {
  $*W.throw($/, ['X', 'Redeclaration'],
  symbol => ~$<deflongname>.ast,
  what => 'routine',
  );
  }

There is no test for if the previous declaration was stubbed.

--
Rune Nilsen
+47 90856985

From @niner

Implemented in Rakudo commit rakudo/rakudo@d28c37dda9
Tests in roast​: Raku/roast@ce9d2a5f6a

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

From @niner

Marking resolved.

Thanks for the report and the hint on where to implement it!

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