Bug #60682 [Bgs]: Infinite recursion through call_user_func causes segmentation fault

Edit report at https://bugs.php.net/bug.php?id=60682&edit=1 ID: 60682 Updated by: laruence@php.net Reported by: charlie at charliesomerville dot com Summary: Infinite recursion through call_user_func causes segmentation fault Status: Bogus Type: Bug Package: Reproducible crash Operating System: Irrelevant PHP Version: 5.3.8 Block user comment: N Private report: N New Comment: sure, that is because there is some improvment in zend_execute which make the function call no-need to call zend_execute recursivly, but call to zend_call_user_function is definitly will be recursivly. thanks Previous Comments: ------------------------------------------------------------------------ [2012-01-09 04:32:20] charlie at charliesomerville dot com I believe a segmentation fault due to a VM stack overflow is *definitely* a bug. You'd be hard-pressed to find another managed language where user code that recurses too deep actually crashes the VM. PHP manages to handle stack overflows just fine in other situations anyway: function f() { f(); } function f() { $a = "f"; $a(); } Neither of those functions will crash the interpreter when called. ------------------------------------------------------------------------ [2012-01-09 04:26:44] laruence@php.net Thank you for taking the time to write to us, but this is not a bug. Please double-check the documentation available at http://www.php.net/manual/ and the instructions on how to report a bug at http://bugs.php.net/how-to-report.php reason is stack overflow, not php issues, but fyi, you can install xdebug to prevent this. ------------------------------------------------------------------------ [2012-01-07 15:49:55] charlie at charliesomerville dot com Description: ------------ The PHP interpreter crashes when a call_user_func recurses too deep, rather than dying with a memory error. Test script: --------------- <?php function f() { call_user_func("f"); } f(); Expected result: ---------------- Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 523800 bytes) in /Users/charlie/crap/notsegfault.php on line 4 Actual result: -------------- Segmentation fault ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=60682&edit=1