ID: 33299 Updated by: [EMAIL PROTECTED] Reported By: clicknmix at gmail dot com -Status: Feedback +Status: Closed Bug Type: XSLT related Operating System: Linux PHP Version: 5.0.4 New Comment:
This bug has been fixed in CVS. Snapshots of the sources are packaged every three hours; this change will be in the next snapshot. You can grab the snapshot at http://snaps.php.net/. Thank you for the report, and for helping us make PHP better. Previous Comments: ------------------------------------------------------------------------ [2005-06-21 14:39:05] [EMAIL PROTECTED] Rob asked me to look at this... it looks like the variables are not declared properly in ext/dom/xml_common.h. #define PHP_DOM_EXPORT(__type) PHPAPI __type ... PHP_DOM_EXPORT(zend_class_entry *) dom_node_class_entry; results in zend_class_entry *dom_class_entry; rather than the desired extern zend_class_entry *dom_class_entry; when included by xsltprocessor.c. The former just defines a new global variable in the BSS which is not going to work at all. I'm testing a patch. ------------------------------------------------------------------------ [2005-06-19 23:19:17] jon at dsvr dot co dot uk On a hunch, I patched the .spec file from the Redhat-provided RPM to build XSL and DOM support statically, instead of as a shared library, and this test fragment of code works. I hope the debugging I've done gives someone with a bit more knowledge of this code enough information to get this cracked. ------------------------------------------------------------------------ [2005-06-19 16:54:07] jon at dsvr dot co dot uk In fact, something quite strange appears to be happening. instanceof_function is called from xsltprocessor.c:281. At this point dom_node_class_entry is not null. At a breakpoint in instanceof_function (zend_operators.c:1581), instance_ce and ce are equal (we can see therefore that this test should go on to succeed). instanceof_function calls instanceof_function_ex. At a breakpoint in this function, (zend_operators.c:1560), instance_ce has apparently been passed correctly, but ce is now null, and the function goes on to return 0. Looks like there could be some stack breakage going on here. Any suggestions welcome. ------------------------------------------------------------------------ [2005-06-19 16:38:56] jon at dsvr dot co dot uk I've done a bit more digging and poking with gdb. It looks to be the case that when instanceof_function is called from xsltprocessor.c:281, zend_class_entry *ce is NULL, and so the instanceof test fails. Something seems wrong with dom_node_class_entry. ------------------------------------------------------------------------ [2005-06-17 17:41:46] jon at dsvr dot co dot uk The following code: function myxml ($Value="default") { $dom = new domdocument(); $dom->loadXML("<root>this is from an external DomDocument - $Value</root>"); return $dom; } print debug_zval_dump(myxml('')); yields: object(DOMDocument)#1 (0) refcount(1){ } I haven't yet managed to get gdb attached happily to this build of PHP; having trouble with loadable modules. It's worth noting that the stock PHP 5.0.4 that comes with Fedora Core 4 demonstrates this problem, if anyone's looking for basic install to test with. ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at http://bugs.php.net/33299 -- Edit this bug report at http://bugs.php.net/?id=33299&edit=1