#41833 [Opn->Asn]: addChild() on a non-existent node, no node created, getName() segfaults

ID: 41833 Updated by: tony2001@php.net Reported By: hubert dot roksor at gmail dot com -Status: Open +Status: Assigned Bug Type: SimpleXML related PHP Version: 5CVS-2007-06-28 (snap) -Assigned To: +Assigned To: rrichards Previous Comments: ------------------------------------------------------------------------ [2007-06-28 02:18:58] hubert dot roksor at gmail dot com Description: ------------ addChild() does not behave as expected(?) when used on a node that wasn't previously declared. In the example below, we initialize an empty tree, to which we attempt to add a new node at "/child/grandchild" without previously adding "child" to the tree. addChild() seems to operate on a temporary SimpleXMLElement and the changes are never applied to the original object/tree. I believe that this bug is also responsible of the segfault that happens if getName() is used on the temporary SimpleXMLElement. I was very tempted to file this bug as a reproducible crash, but decided to file it under SimpleXML in case it would help routing it to the maintainer faster. Tested on: PHP 5.2.4-dev (cli) (built: Jun 27 2007 20:04:30) WinXP libxml2 2.6.26 SimpleXML Revision: 1.151.2.22.2.29 PHP 5.2.2-pl1-gentoo (cli) (built: May 24 2007 00:26:35) libxml 2.6.27 SimpleXML Revision: 1.151.2.22.2.26 Reproduce code: --------------- <?php $xml = simplexml_load_string('<?xml version="1.0" encoding="utf-8" ?><root />'); $xml->child->addChild('grandchild'); echo $xml->asXML(); Expected result: ---------------- I expect SimpleXML to create "child" if it does not exist, then add "grandchild" to that node. The output should be: <?xml version="1.0" encoding="utf-8"?> <root><child><grandchild/></child></root> Actual result: -------------- Neither node is added to the tree. The output is: <?xml version="1.0" encoding="utf-8"?> <root/> ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=41833&edit=1