• class ResourceLoaderWikiModule
• protected function getTitleMtimes

		if ( !$batch->isEmpty() ) {
			$res = $dbr->select( 'page',
				array( 'page_namespace', 'page_title', 'page_touched' ),
				$batch->constructSet( 'page', $dbr ),
				__METHOD__
			);
			foreach ( $res as $row ) {

Database::select

• @return ResultWrapper. If the query returned no rows, a ResultWrapper
• with no rows in it will be returned. If there was a query error, a
• DBQueryError exception will be thrown, except if the "ignore errors"
• option was set, in which case false will be returned.

Someone leaks the ignore error option here?

So I did a quick grep on the core, and $db->ignoreErrors() is not called anywhere. The function is literally unused. The only reason I can think of for this error occurring is if DBO_IGNORE is set in the flags for starting the database connection.

On that note, is it really sane to be returning false from $dbr->select()? If the ignore errors flag was set, it means the caller doesn't give a damn about errors whatsoever. I feel like the correct behavior would be to return some sort of empty fake result wrapper.

Removing target milestone that was in the past.

If you want this in a specific release, have a good reason AND you are willing to find resources to fix this bug, feel free to change it to something appropriate.

Does this still occur? Filed over two years ago…