-c bug to report

[ToddAndMargo]

Dear Developers,

$ perl6 -v
This is Rakudo version 2018.05 built on MoarVM version 2018.05
implementing Perl 6.c.

`Perl6 -c xxx.pl6` passes

     if IsCurrentRevNewer ( $OldRev, $NewRev, $SubName, "no", "quiet" )

when the sub it calls only has three variables in it header, not five:

     sub IsCurrentRevNewer(
        $Caller,      # who called this function
        $LatestRev,   # Latest Revision
        $OldRev ) {   # Old Revision


-T