From @moritz

$ ./perl6-m --version
This is perl6 version 2014.04-86-gf724dd5 built on MoarVM version
2014.04-28-geadd2c8$
$ echo 'foo' > input
$ cat input | ./perl6-m -e '.say for lines()' # as expected
foo
$ ./perl6-m -e '.say for lines()' < input |head -n 20|wc -l
20

WTF? Supplying the input through a redirect instead of a pipe causes
rakudo-m to ready infintely many empty strings from lines().

From @FROGGS

That shows the problem I think​:

cat input | perl6-m -e 'my $fh = open("-", :r); say $fh.get.defined; say $fh.get.defined'
True
False

perl6-m -e 'my $fh = open("-", :r); say $fh.get.defined; say $fh.get.defined' < input
True
True

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

From @FROGGS

Fixed at MoarVM/MoarVM@a109e8d765
NQP/Rakudo got bumped, so this patch is included in rakudo HEAD.

@FROGGS - Status changed from 'open' to 'resolved'