[perl #127482] Compilation check says Syntax OK but program gets error

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# New Ticket Created by  James E Keenan 
# Please include the string:  [perl #127482]
# in the subject line of all future correspondence about this issue. 
# <URL: https://rt.perl.org/Ticket/Display.html?id=127482 >


The following program passes a compilation check but fails to run.

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$ cat attempted_printf.pl6 
#!/usr/bin/env perl6

my $integer = 6;

printf("%-20s%-20s%-20s\n" => $integer, $integer.WHAT, $integer.perl);

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$ perl6 -c attempted_printf.pl6 
Syntax OK

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$ perl6 attempted_printf.pl6 
Type check failed in binding $format; expected Cool but got Pair
  in block <unit> at attempted_printf.pl6 line 5

#####

Feature or bug?

#####

$ perl6 -v
This is Rakudo version 2016.01.1 built on MoarVM version 2016.01
implementing Perl 6.c.

Thank you very much.

-- 
James E Keenan (jkee...@cpan.org)