ID: 23505
Updated by: derick@php.net
Reported By: alan at akbkhome dot com
-Status: Open
+Status: Analyzed
Bug Type: Scripting Engine problem
Operating System: linux
PHP Version: 4.3.2RC2
New Comment:
Full backtrace, it simply shows that the function name is already freed
when we try to strdup it. I couldn't find the cause though...
#0 0x4072567b in strlen (str=0x5a5a5a5a <Address 0x5a5a5a5a out of
bounds>)
at ../sysdeps/i386/strlen.c:28
str = 0x5a5a5a5a <Address 0x5a5a5a5a out of bounds>
cnt = -1
#1 0x08222aa1 in add_assoc_string_ex (arg=0x83b8c54,
key=0x82a4e23 "function", key_len=9,
str=0x5a5a5a5a <Address 0x5a5a5a5a out of bounds>, duplicate=1)
at /dat/dev/php/php-4.3.0dev/Zend/zend_API.c:668
__s = 0x5a5a5a5a <Address 0x5a5a5a5a out of bounds>
tmp = (zval *) 0x83c5b3c
#2 0x0822c33c in zif_debug_backtrace (ht=0, return_value=0x83c560c,
this_ptr=0x0, return_value_used=0)
at /dat/dev/php/php-4.3.0dev/Zend/zend_builtin_functions.c:1239
ptr = (zend_execute_data *) 0xbfffd620
lineno = 10
function_name = 0x5a5a5a5a <Address 0x5a5a5a5a out of bounds>
filename = 0x83c39dc "/tmp/test.php.txt"
class_name = 0x83c49f4 "test"
call_type = 0x82a4e2f "->"
include_filename = 0x0
stack_frame = (zval *) 0x83b8c54
cur_arg_pos = (void **) 0x83b9744
args = (void **) 0x83b973c
arg_stack_consistent = 1
frames_on_stack = 1
#3 0x082316ab in execute (op_array=0x83c5cf4)
at /dat/dev/php/php-4.3.0dev/Zend/zend_execute.c:1606
original_return_value = (zval **) 0x83c4ee4
return_value_used = 0
execute_data = {opline = 0x83c4ecc, function_state = {
function_symbol_table = 0x0, function = 0x8303a10, reserved =
{0x83c55e8,
0xc4, 0x830150c, 0xbfffd178}}, fbc = 0x0, ce = 0x0, object = {
ptr = 0x0}, Ts = 0xbfffcf80, original_in_execution = 1 '\001',
op_array = 0x83c5cf4, prev_execute_data = 0xbfffd1f0}
#4 0x08218175 in call_user_function_ex (function_table=0xbfffd2c8,
object_pp=0xbfffd3ac, function_name=0xbfffd390,
retval_ptr_ptr=0xbfffd3b8,
param_count=3, params=0xbfffd360, no_separation=0,
symbol_table=0x0)
at /dat/dev/php/php-4.3.0dev/Zend/zend_execute_API.c:559
i = 3
original_return_value = (zval **) 0xbfffd694
calling_symbol_table = (HashTable *) 0x830124c
original_function_state_ptr = (zend_function_state *) 0xbfffd624
original_op_array = (zend_op_array *) 0x83bf8cc
original_opline_ptr = (zend_op **) 0xbfffd620
orig_free_op1 = 0
orig_free_op2 = 0
orig_unary_op = (int (*)()) 0
orig_binary_op = (int (*)()) 0
function_name_copy = {value = {lval = 138165884,
dval = 1.2800237762503321e-313, str = {val = 0x83c3e7c "__call",
len = 6},
ht = 0x83c3e7c, obj = {ce = 0x83c3e7c, properties = 0x6}},
type = 3 '\003', is_ref = 0 '\0', refcount = 1}
execute_data = {opline = 0x0, function_state = {
function_symbol_table = 0xbfffd330, function = 0x83c5cf4, reserved
= {
0x8210159, 0x83c56ac, 0x0, 0x20}}, fbc = 0x0, ce = 0x0, object =
{
ptr = 0x83beda4}, Ts = 0x0, original_in_execution = 69 'E',
op_array = 0x0, prev_execute_data = 0xbfffd620}
#5 0x08130f16 in overload_call_method (ht=0, return_value=0x83c52f4,
this_ptr=0x83beda4, return_value_used=1,
property_reference=0xbfffd4a8)
at /dat/dev/php/php-4.3.0dev/ext/overload/overload.c:566
handler_args = {0xbfffd37c, 0xbfffd35c, 0xbfffd33c}
arg_array = (zval *) 0x83c57e4
result = {value = {lval = 137368844, dval = 5.3614447185633565e-269,
str = {val = 0x830150c "", len = 138171136}, ht = 0x830150c, obj =
{
ce = 0x830150c, properties = 0x83c5300}}, type = 0 '\0',
is_ref = 1 '\001', refcount = 4}
result_ptr = (zval *) 0xbfffd340
temp_ce = {type = 2 '\002', name = 0x83c49f4 "test", name_length = 4,
parent = 0x0, refcount = 0x83c4a94, constants_updated = 1 '\001',
function_table = {nTableSize = 16, nTableMask = 15, nNumOfElements =
1,
nNextFreeElement = 0, pInternalPointer = 0x83c5c94, pListHead =
0x83c5c94,
pListTail = 0x83c5c94, arBuckets = 0x83c4acc,
pDestructor = 0x8219b20 <destroy_zend_function>, persistent = 0
'\0',
nApplyCount = 0 '\0', bApplyProtection = 1 '\001', inconsistent =
0},
default_properties = {nTableSize = 16, nTableMask = 15,
nNumOfElements = 0,
nNextFreeElement = 0, pInternalPointer = 0x0, pListHead = 0x0,
pListTail = 0x0, arBuckets = 0x83c4b3c,
pDestructor = 0x821ff0c <_zval_ptr_dtor_wrapper>, persistent = 0
'\0',
nApplyCount = 0 '\0', bApplyProtection = 1 '\001', inconsistent =
0},
builtin_functions = 0x0, handle_function_call = 0,
handle_property_get = 0,
handle_property_set = 0}
orig_ce = (zend_class_entry *) 0x83c4f80
i = 0
args = (zval ***) 0x83c55dc
retval = (zval *) 0x0
call_result = -1073752624
use_call_handler = 1 '\001'
object = (zval *) 0x83beda4
call_handler = {value = {lval = 136765616,
dval = 1.279954593818955e-313, str = {val = 0x826e0b0 "__call", len
= 6},
ht = 0x826e0b0, obj = {ce = 0x826e0b0, properties = 0x6}},
type = 3 '\003', is_ref = 0 '\0', refcount = 1}
method_name = {value = {lval = 138171068,
dval = 1.0678244532774356e-313, str = {val = 0x83c52bc "hello", len
= 5},
ht = 0x83c52bc, obj = {ce = 0x83c52bc, properties = 0x5}},
type = 3 '\003', is_ref = 0 '\0', refcount = 2}
method_name_ptr = (zval *) 0xbfffd380
method = (zend_overloaded_element *) 0x83c550c
#6 0x0822ec1a in call_overloaded_function (T=0xbfffd49c, arg_count=0,
return_value=0x83c52f4)
at /dat/dev/php/php-4.3.0dev/Zend/zend_execute.c:968
ce = (zend_class_entry *) 0x83c4f80
#7 0x08231a9b in execute (op_array=0x83bf8cc)
at /dat/dev/php/php-4.3.0dev/Zend/zend_execute.c:1672
original_return_value = (zval **) 0x83c3b54
return_value_used = 0
execute_data = {opline = 0x83c3d58, function_state = {
function_symbol_table = 0x0, function = 0x83c5554, reserved =
{0x821936e,
0x83bf954, 0x82a2d60, 0x61}}, fbc = 0x83c5554, ce = 0x0, object =
{
ptr = 0x83beda4}, Ts = 0xbfffd410, original_in_execution = 0 '\0',
op_array = 0x83bf8cc, prev_execute_data = 0x0}
Previous Comments:
------------------------------------------------------------------------
[2003-05-06 03:30:53] alan_k@php.net
ok dericks busy - anyone else want to have a go :)
------------------------------------------------------------------------
[2003-05-06 03:29:37] alan_k@php.net
note this happens when you create a pear error inside the __call
method.
------------------------------------------------------------------------
[2003-05-06 03:28:40] alan at akbkhome dot com
<?php
class test {
function __call($method,$params,&$return) {
debug_backtrace();
}
}
overload('test');
$t = new test; $t->hello();
?>
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=23505&edit=1