Closing this myself in favor of this ticket: https://github.com/perl6/doc/issues/1567
On 2017-07-17 23:51:21, alex.jakime...@gmail.com wrote: > Alright, it seems that rakudo is not entirely incorrect here. See this > discussion: https://irclog.perlgeek.de/perl6-dev/2017-07-18#i_14885863 > > TL;DR, one should use something like this: > > whenever $proc.print(“one\ntwo\nthree\nfour”) { $proc.close-stdin } > > So it seems that it's not a bug, but a trap maybe? > > I'll leave this for somebody else to close. > > On 2017-07-17 22:45:01, alex.jakime...@gmail.com wrote: > > Code: > > > > sub get-output() { > > my $proc = Proc::Async.new: :w, ‘head’, ‘-n’, ‘1’; > > my $success; > > react { > > whenever $proc.stdout { $success = True } > > whenever $proc.start { die ‘FAIL!’ unless $success } > > > > $proc.print: “one\ntwo\nthree\nfour”; > > $proc.close-stdin; > > } > > say $++; > > } > > > > loop { get-output } > > > > > > Again, the result depends on your luck. Ideally it should not “die” > > ever, because there should always be one line in the output and > > therefore $success will be set to true. However, sometimes its stdout > > is empty and therefore it fails. It may fail after 20+ executions, and > > sometimes it fails almost immediately. > > > > Related ticket: https://rt.perl.org/Ticket/Display.html?id=131763
