id,summary,reporter,owner,description,type,status,priority,milestone,component,version,severity,resolution,keywords,cc,lang,patch,platform
1029,taillcall into PIR compiler broken,coke,whiteknight,"See [http://rt.perl.org/rt3/Ticket/Display.html?id=51206 Original RT]

If you apply this patch to parrot: 

{{{
index 776a062..4f1486f 100644
--- a/compilers/pct/src/PCT/HLLCompiler.pir
+++ b/compilers/pct/src/PCT/HLLCompiler.pir
@@ -512,8 +512,7 @@ Transform PAST C<source> into POST.
     .param pmc adverbs         :slurpy :named
 
     $P0 = compreg 'PIR'
-    $P1 = $P0(source)
-    .return ($P1)
+    .tailcall $P0(source)
 .end
}}}

This causes failures in rakudo. For example, ""class {}"" without the patch returns nothing in interactive mode, but with the patch, it returns a failure regarding the # of arguments expected.

A simple test of the tailcall (below) doesn't show this behavior.

{{{
.sub main 
  $P1 = elm()
  $P1()
.end

.sub elm

  $P1 = compreg 'PIR'
  $S0 =<<'END_PIR'
.sub foo
say 'ok'
.end
END_PIR
  .tailcall $P1($S0)
.end
}}}",bug,closed,normal,,none,trunk,high,fixed,,,perl6,,all