From @raiph

What I did

use experimental :macros;
macro m { quasi {} }
m

What I got

rakudo-moar e071e4​: OUTPUT«Weird node visited​: QAST​::BVal␤»

What I expected

No output or Nil used in sink context or somesuch.

Why the message appears

TimToady added this error message to Rakudo's Optimizer.nqp as part of his Great Sink Refactor commit rakudo/rakudo@f95c144

The error message is the last else in an if/elsif chain that deals with all but two -- BVal and CompUnit -- of the 15 QAST node types mentioned in https://github.com/perl6/nqp/blob/66da2a28b644f0a535f448fb62b4720b0b1201c4/docs/qast.markdown

Perhaps we just need to add BVal and CompUnit to the final elsif at rakudo/rakudo@f95c144#diff-c6d4338f0fe083856631860c53453281R1943

Or perhaps proper sink handling requires one or both of these to be individually processed.

From @coke

On Sun Jun 26 11​:42​:10 2016, raiph wrote​:

What I did

use experimental :macros;
macro m { quasi {} }
m

What I got

rakudo-moar e071e4​: OUTPUT«Weird node visited​: QAST​::BVal␤»

What I expected

No output or Nil used in sink context or somesuch.

Why the message appears

TimToady added this error message to Rakudo's Optimizer.nqp as part of
his Great Sink Refactor commit
rakudo/rakudo@f95c144

The error message is the last else in an if/elsif chain that deals
with all but two -- BVal and CompUnit -- of the 15 QAST node types
mentioned in
https://github.com/perl6/nqp/blob/66da2a28b644f0a535f448fb62b4720b0b1201c4/docs/qast.markdown

Perhaps we just need to add BVal and CompUnit to the final elsif at
rakudo/rakudo@f95c144#diff-
c6d4338f0fe083856631860c53453281R1943

Or perhaps proper sink handling requires one or both of these to be
individually processed.

macros are experimental and development on them is currently stalled.

Marking ticket as 'stalled'

--
Will "Coke" Coleda

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

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