rakudo on MoarVM crashes with : Segmentation fault: 11

unclosed-begin.p6

# When writing code to test rakudo hanging on an unclosed =begin
# I run into : A segmentation fault.
# Also when supressing the last two lines and replacing the EVALed code by one that
# does not compile, this is CATCHed,the ok is printed but I still get a stacktrace even
# with the try in addition to the catch.

use Test;
my $thread = Thread.start({
   try {
        CATCH { ok 1, 'non closed "=begin whatever" should fail instead of hanging' }
        EVAL q:to<END>;
        =begin pod
        bleck
        END
   }
});
sleep 1;
$thread.finish;