#31829 [Fbk->NoF]: Schema Validation Infinite Loop

ID: 31829 Updated by: sniper@php.net Reported By: lphuberdeau at phpquebec dot org -Status: Feedback +Status: No Feedback Bug Type: *XML functions Operating System: Windows 2000 PHP Version: 5.0.3 New Comment: No feedback was provided. The bug is being suspended because we assume that you are no longer experiencing the problem. If this is not the case and you are able to provide the information that was requested earlier, please do so and change the status of the bug back to "Open". Thank you. Previous Comments: ------------------------------------------------------------------------ [2005-02-03 19:12:49] chregu@php.net Most certainly a libxml2 bug. PHP has nothing to do with the actual parsing and validation. Can you check with xmllint, if that has the same problem? And update to the latest libxml2 libraries, they were quite some fixes lately regarding XSDs. ------------------------------------------------------------------------ [2005-02-03 16:02:19] lphuberdeau at phpquebec dot org Description: ------------ When validating an XML document using a schema with references to other schemas, the validation falls in a loop until the script dies due to insufficient memory. Seems like there is no check to verify if the file has already been included. This bug might actually be located in libxml2. I was able to avoid the problem by only placing includes in the primary XSD. Reproduce code: --------------- Validate a DOM tree with a schema (schema1.xsd) with the following structure: schema1.xsd: include schema2.xsd include schema3.xsd schema2.xsd: include schema3.xsd schema3.xsd: include schema2.xsd Expected result: ---------------- The file to validate, ignoring any already included files, or at least throw an exception. Actual result: -------------- Using PHP-CLI, the system goes in an infinite loop and uses all available system memory. I would suspect the script to crash in a web environment with a memory limit. ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=31829&edit=1