Bug in mysqli after 3.4.7 update

[fatica]

Our custom component's data import process broke after applying this update. I'm not clear yet on the call stack yet, but this was the final error:

2015/12/22 02:57:19 [error] 1828#0: *4119570 FastCGI sent in stderr: "PHP message: PHP Fatal error: Call to a member function stat() on a non-object in /<redacted>/joomla/database/driver/mysqli.php on line 202" while reading response header from upstream, client:

That line references this:

Code: Select all

		if ($this->connection->stat() !== false)

Which used to be this:

Code: Select all

// Close the connection.
		if ($this->connection)
		{
			foreach ($this->disconnectHandlers as $h)
			{
				call_user_func_array($h, array( &$this));
			}

			mysqli_close($this->connection);
		}

		$this->connection = null;

I realize this isn't a very helpful report, but I wanted to bring this up asap since we've never seen any issue like this after a joomla upgrade, and we've been applying them faithfully for many years.

I'll get a full stack trace after I run this at work tomorrow.

The new code presumes that a connection object exists, and has a ->stat() function to call, which isn't the most defensive programming I've ever seen ;-)

[pe7er]

Maybe your issue is related with this known Backward Compatibility issue in Joomla 3.4.7?
https://docs.joomla.org/J3.x:Backward_C ... omla_3.4.7

[pollen8]

a quick fix for that line is to replace it with:

Code: Select all

if ($this->connection && $this->connection->stat() !== false)

[pollen8]

A ticket is already up in JIssues, so if you can report there that you have the same issue we can move forward with fixing it:
https://issues.joomla.org/tracker/joomla-cms/8762