require_once includes twice

[nicolas-grekas]

HHVM Version

HipHop VM 3.18.1 (rel)
Compiler: tags/HHVM-3.18.1-0-g4f792a827d9b6fcc4bcd7940a1b92280f3fdedc3
Repo schema: b9aebb86bbda024eeeed6f608c9a49076563f9c7

Standalone code, or other way to reproduce the problem

create file foo.php:

<?php class foo {}

create file bug.php:

<?php

require_once 'foo.php';
touch('foo.php');
require_once 'foo.php';

then hhvm bug.php

Expected result

no output, status zero

Actual result

Fatal error: Class already declared: foo in foo.php on line 1

[QuestionPython]

i have a Question : touch(<path_file>) what do?

[nicolas-grekas]

http://php.net/touch