Description:
------------
A class that extends SplFileObject,  specifies its own constructor and is registered with SplFileInfo::setFileClass() will only be instantiated with the first argument passed to SplFileInfo::openFile().

Test script:
---------------
<?php

class FileObject extends \SplFileObject {

	public function __construct($file_name, $open_mode = 'r', $use_include_path = false, $context = null) {
		if (is_resource($context)) {
			parent::__construct($file_name, $open_mode, $use_include_path, $context);
		}
		else {
			parent::__construct($file_name, $open_mode, $use_include_path);
		}
	}
}

$file = new \SplFileInfo(__DIR__ . DIRECTORY_SEPARATOR . 'foo');

$file->setFileClass('FileObject');

$file->openFile('w+');

Expected result:
----------------
File is created

Actual result:
--------------
Fatal error: Uncaught exception 'RuntimeException' with message 'SplFileObject::__construct(/Users/stephen/Projects/Koalephant/Bamboo/tests/foo): failed to open stream: No such file or directory' in /Users/stephen/Projects/Koalephant/Bamboo/tests/SplFileInfoTest.php:10
Stack trace:
#0 /Users/stephen/Projects/Koalephant/Bamboo/tests/SplFileInfoTest.php(10): SplFileObject->__construct('/Users/stephen/...', 'r', false)
#1 [internal function]: FileObject->__construct('/Users/stephen/...', 'r')
#2 /Users/stephen/Projects/Koalephant/Bamboo/tests/SplFileInfoTest.php(19): SplFileInfo->openFile('w+')
#3 {main}
  thrown in /Users/stephen/Projects/Koalephant/Bamboo/tests/SplFileInfoTest.php on line 10