Bug #72793 [NEW]: xml_parser_free leaks mem when execute xml_set_object

From: daisukeunoz1zi at gmail dot com Operating system: CentOS PHP version: 7.0.9 Package: *XML functions Bug Type: Bug Bug description:xml_parser_free leaks mem when execute xml_set_object Description: ------------ --- From manual page: http://www.php.net/function.xml-parser-free --- The memory usage of the script below goes through the roof. It happen only when execute "xml_set_object". It does not happen when I execute "unset($this->parser);". Test script: --------------- <?php class xml { var $parser; function __construct() { $this->parser = xml_parser_create(); xml_set_object($this->parser, $this); } function parse($data) { xml_parse($this->parser, $data); } function free(){ xml_parser_free($this->parser); //unset($this->parser); } } $xml_test = '<?xml version="1.0" encoding="utf-8"?><test></test>'; for ($i = 0; $i < 100000000; $i++) { $xml_parser = new xml(); $xml_parser->parse($xml_test); $xml_parser->free(); unset($xml_parser); } ?> Expected result: ---------------- Empty output. Actual result: -------------- Out of memory error. -- Edit bug report at https://bugs.php.net/bug.php?id=72793&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=72793&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=72793&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=72793&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=72793&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=72793&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=72793&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=72793&r=needscript Try newer version: https://bugs.php.net/fix.php?id=72793&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=72793&r=support Expected behavior: https://bugs.php.net/fix.php?id=72793&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=72793&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=72793&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=72793&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=72793&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=72793&r=dst IIS Stability: https://bugs.php.net/fix.php?id=72793&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=72793&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=72793&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=72793&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=72793&r=mysqlcfg