ID: 28213
Comment by: wf at bitplan dot com
Reported By: [EMAIL PROTECTED]
Status: Assigned
Bug Type: Zend Engine 2 problem
Operating System: Linux
PHP Version: 5CVS-2004-04-29 (dev)
Assigned To: Andi
New Comment:
Spurious crashes happen also if used like this:
function internal_error($msg) {
global $testmode_errordisplay;
if (isset($testmode_errordisplay)) {
display_error($msg,"ERROR");
if ($testmode_errordisplay=="stacktrace")
printStackTrace();
}
user_error($msg);
}
Previous Comments:
------------------------------------------------------------------------
[2004-04-29 05:38:46] [EMAIL PROTECTED]
Description:
------------
debug_print_backtrace() will crash PHP when called from inside a static
function used as custom error handler function.
Reproduce code:
---------------
<?php
class FooBar { static function error() { debug_print_backtrace(); } }
set_error_handler(array('FooBar', 'error'));
include('foobar.php');
?>
Actual result:
--------------
magnus:crash > php crash.php
#0 FooBar::error() called at
[/home/magnus/Projects/base/tests/crash/crash.php:6]
#1 FooBarSegmentation fault
(gdb) bt
#0 0x40d4cb53 in strlen () from /lib/libc.so.6
#1 0x0839a0a9 in zif_debug_print_backtrace (ht=0,
return_value=0x40e24720, this_ptr=0x0, return_value_used=0)
at /mnt/data1/Apps/CVS/PHP/php5/Zend/zend_builtin_functions.c:1549
#2 0x083b53a8 in zend_do_fcall_common_helper (execute_data=0xbfffc9d0,
opline=0x40e25584, op_array=0x40e2691c)
at /mnt/data1/Apps/CVS/PHP/php5/Zend/zend_execute.c:2699
#3 0x083b5bbb in zend_do_fcall_handler (execute_data=0xbfffc9d0,
opline=0x40e25584, op_array=0x40e2691c)
at /mnt/data1/Apps/CVS/PHP/php5/Zend/zend_execute.c:2828
#1 0x0839a0a9 in zif_debug_print_backtrace (ht=0,
return_value=0x40e24720, this_ptr=0x0, return_value_used=0)
at /mnt/data1/Apps/CVS/PHP/php5/Zend/zend_builtin_functions.c:1549
ptr = (zend_execute_data *) 0xbfffd060
lineno = 4
function_name = 0x848cf97 "include"
filename = 0x40e23c08
"/home/magnus/Projects/base/tests/crash/crash.php"
class_name = 0x40e25070 "FooBar"
call_type = 0x0
include_filename = 0x40e23c08
"/home/magnus/Projects/base/tests/crash/crash.php"
arg_array = (zval *) 0x40e2481c
cur_arg_pos = (void **) 0x40e13c90
args = (void **) 0x40e13c74
arg_stack_consistent = 1
frames_on_stack = 1
indent = 1
#2 0x083b53a8 in zend_do_fcall_common_helper (execute_data=0xbfffc9d0,
opline=0x40e25584, op_array=0x40e2691c)
at /mnt/data1/Apps/CVS/PHP/php5/Zend/zend_execute.c:2699
original_return_value = (zval **) 0x3f7
current_scope = (zend_class_entry *) 0x853e4d8
current_this = (zval *) 0x0
return_value_used = 0
should_change_scope = 0 '\0'
#3 0x083b5bbb in zend_do_fcall_handler (execute_data=0xbfffc9d0,
opline=0x40e25584, op_array=0x40e2691c)
at /mnt/data1/Apps/CVS/PHP/php5/Zend/zend_execute.c:2828
fname = (zval *) 0x40e255a0
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=28213&edit=1
