#26306 [Bgs]: Recursive function call crashes engine
ID: 26306
User updated by: toolshed51 at yahoo dot com
Reported By: toolshed51 at yahoo dot com
Status: Bogus
Bug Type: Reproducible crash
Operating System: FreeBSD 4.9
PHP Version: 4.3.3
New Comment:
Dear developer, how specific of you...
I expect a scripting language such as php to trap a stack overflow or
whatever I can throw at it.
Previous Comments:
------------------------------------------------------------------------
[2003-11-18 15:06:05] sniper@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
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[2003-11-18 14:23:45] toolshed51 at yahoo dot com
Description:
------------
Engine crashes when passed buggy recursive function calling code.
PHP 4.3.3 (cli) (built: Sep 17 2003 22:54:17)
Copyright (c) 1997-2003 The PHP Group
Zend Engine v1.3.0, Copyright (c) 1998-2003 Zend Technologies
with Zend Optimizer v2.1.0, Copyright (c) 1998-2003, by Zend
Technologies
Reproduce code:
---------------
<?php
function debug ($text='', $level=2, $file='', $line=0) {
if (is_writable ('/logs/error.log')) {
error_log ("$debug_string\n", 3, '/logs/error.log');
} else {
debug ('Error Log Not Writable', 2);
}
}
debug ('Test');
?>
Expected result:
----------------
I expect an out of memory error or something to be caught. Instead it
seems the engine gets caught in an infinite loop like my code and dies
painfully.
Actual result:
--------------
0x28ade8cb in zend_assign_to_variable_reference () from
/usr/local/libexec/apache/ZendOptimizer.so
Or! If I add a call to error_log to count function calls (in my case
it was 8976 before engine crashed)... then I get...
0x81a07c1 in zend_hash_quick_add_or_update () from
/usr/local/libexec/apache/ZendOptimizer.so
If I remove zend_optimzer.so from php.ini I get this error
0x819aa2e in zendi_smart_strcmp ()
Backtrace is thousands and thousands of any of the given above
messages.
------------------------------------------------------------------------
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