This PR was squashed before being merged into the 2.8 branch (closes#17253).Discussion----------[Console] HHVM read input stream bug| Q             | A| ------------- | ---| Bug fix?      | [yes]| New feature?  | [no]| BC breaks?    | [no]| Deprecations? | [no]| Tests pass?   | [yes]| License       | MITHHVM readline() function requires a parameter  see:https://github.com/facebook/hhvm/blob/master/hphp/runtime/ext/readline/ext_readline.phpBut the php readline does not require one.```In   Symfony\Component\Console\Helper\QuestionHelper … readFromInput($stream) …```we use readline() without a parameter.HHVM Version:```HipHop VM 3.10.1 (rel)Compiler: tags/HHVM-3.10.1-0-g689b4969a141620ee5a282ce0dbf72278c84d44bRepo schema: 6c99ee1f98340f6f3ef397a332583f0e843a627d```Docker Container:```docker run --rm -it -v `pwd`:`pwd` -w `pwd` brunoric/hhvm:deb hhvm test.php ls```Test.php```<?phpuse Symfony\Component\Console\Application;use Symfony\Component\Console\Input\InputInterface;use Symfony\Component\Console\Input\InputArgument;use Symfony\Component\Console\Input\InputOption;use Symfony\Component\Console\Output\OutputInterface;use Symfony\Component\Console\Question\Question;use Symfony\Component\Console\Helper\QuestionHelper;require_once  "vendor/autoload.php";$console = new Application();$console    ->register('ls')    ->setDescription('Try input')    ->setCode(function (InputInterface $input, OutputInterface $output) {        $question = new Question('Your email address: ');        $question->setValidator(            function ($answer) {                return $answer;            }        );        $question->setMaxAttempts(5);    $helper = new QuestionHelper();      $email = $helper->ask($input, $output, $question);        $output->writeln(sprintf('Email Adress: <info>%s</info>', $email));    });$console->run();```composer.json```{    "require": {        "symfony/console": "^3.0"    }}```Result:No input is possible and you got a warning```Your email address:Warning: readline() expects exactly 1 parameter, 0 given in /clitest/vendor/symfony/console/Helper/QuestionHelper.php on line 436Email Adress:```Fix:Add a empty string parameter to  readline() or use fgets() for hhvm.Commits-------e7f17a7 [Console] HHVM read input stream bug