Edit report at https://bugs.php.net/bug.php?id=54911&edit=1
ID: 54911
Updated by: larue...@php.net
Reported by: erik at datahack dot se
Summary: Access to a undefined member in inherit SoapClient
may cause Segmentation Fault
Status: Assigned
Type: Bug
Package: Reproducible crash
Operating System: Linux
PHP Version: 5.3.6
Assigned To: dmitry
Block user comment: N
Private report: N
New Comment:
and I can also reproduce this with svn-trunk
and after I undef zend_always_inline, got a more clearly bt:
#0 0x00000000009ffe8c in zval_delref_p (pz=0x5a5a5a5a5a5a5a5a) at
/home/laruence/opensource/php-src/trunk/Zend/zend.h:391
391 return --pz->refcount__gc;
(gdb) bt
#0 0x00000000009ffe8c in zval_delref_p (pz=0x5a5a5a5a5a5a5a5a) at
/home/laruence/opensource/php-src/trunk/Zend/zend.h:391
#1 0x0000000000a00efc in i_zval_ptr_dtor (zval_ptr=0x5a5a5a5a5a5a5a5a,
__zend_filename=0xdb2f28 "/home/laruence/opensource/php-
src/trunk/Zend/zend_execute.h", __zend_lineno=339)
at /home/laruence/opensource/php-src/trunk/Zend/zend_execute.h:82
#2 0x0000000000a0163e in zend_vm_stack_clear_multiple () at
/home/laruence/opensource/php-src/trunk/Zend/zend_execute.h:339
#3 0x0000000000a050f9 in zend_do_fcall_common_helper_SPEC
(execute_data=0x2a95fbc0e8)
at /home/laruence/opensource/php-src/trunk/Zend/zend_vm_execute.h:736
#4 0x0000000000a054c8 in ZEND_DO_FCALL_BY_NAME_SPEC_HANDLER
(execute_data=0x2a95fbc0e8)
at /home/laruence/opensource/php-src/trunk/Zend/zend_vm_execute.h:752
#5 0x0000000000a0427c in execute (op_array=0x2a95ff3828) at
/home/laruence/opensource/php-src/trunk/Zend/zend_vm_execute.h:410
#6 0x00000000009b0c18 in zend_execute_scripts (type=8, retval=0x0,
file_count=3) at /home/laruence/opensource/php-src/trunk/Zend/zend.c:1271
#7 0x00000000008ef5aa in php_execute_script (primary_file=0x7fbffff260) at
/home/laruence/opensource/php-src/trunk/main/main.c:2391
#8 0x0000000000a632c8 in do_cli (argc=2, argv=0x7fbffff548) at
/home/laruence/opensource/php-src/trunk/sapi/cli/php_cli.c:983
#9 0x0000000000a64169 in main (argc=2, argv=0x7fbffff548) at
/home/laruence/opensource/php-src/trunk/sapi/cli/php_cli.c:1356
Previous Comments:
------------------------------------------------------------------------
[2011-09-17 10:29:32] larue...@php.net
assign to dmitry.
------------------------------------------------------------------------
[2011-05-23 19:33:19] erik at datahack dot se
Description:
------------
If you try to access an undefined variable or constant in an extended
SoapClient, it will cause PHP crash due to a Segmentation Fault.
Test script:
---------------
<?php
class XSoapClient extends SoapClient {
function __doRequest($request, $location, $action, $version) {
echo self::$crash;
// echo parent::$crash;
// echo self::crash;
// echo parent::crash;
}
}
$client = new XSoapClient(null, array('uri'=>'', 'location'=>''));
$client->__soapCall('', array());
?>
Expected result:
----------------
An error like, Fatal error: Access to undeclared static property:
XSoapClient::$crash...
Actual result:
--------------
$ sapi/cli/php ../crash.php
Segmentation fault
# gdb backtrace...
Starting program: /home/erik/php-5.3.6/sapi/cli/php ../crash.php
[Thread debugging using libthread_db enabled]
Program received signal SIGSEGV, Segmentation fault.
0x0843c238 in zval_delref_p (zval_ptr=0xbfffcf68, __zend_filename=0x87cc4e8
"/home/erik/php-5.3.6/Zend/zend_vm_execute.h",
__zend_lineno=609) at /home/erik/php-5.3.6/Zend/zend.h:385
385 return --pz->refcount__gc;
(gdb) bt
#0 0x0843c238 in zval_delref_p (zval_ptr=0xbfffcf68, __zend_filename=0x87cc4e8
"/home/erik/php-5.3.6/Zend/zend_vm_execute.h",
__zend_lineno=609) at /home/erik/php-5.3.6/Zend/zend.h:385
#1 _zval_ptr_dtor (zval_ptr=0xbfffcf68, __zend_filename=0x87cc4e8
"/home/erik/php-5.3.6/Zend/zend_vm_execute.h", __zend_lineno=609)
at /home/erik/php-5.3.6/Zend/zend_execute_API.c:437
#2 0x08479ff8 in ZEND_HANDLE_EXCEPTION_SPEC_HANDLER (execute_data=0x8920a60)
at /home/erik/php-5.3.6/Zend/zend_vm_execute.h:609
#3 0x08478793 in execute (op_array=0x88f2be0) at
/home/erik/php-5.3.6/Zend/zend_vm_execute.h:107
#4 0x0844bae6 in zend_execute_scripts (type=8, retval=0x0, file_count=3) at
/home/erik/php-5.3.6/Zend/zend.c:1194
#5 0x083e102e in php_execute_script (primary_file=0xbffff324) at
/home/erik/php-5.3.6/main/main.c:2268
#6 0x08509d35 in main (argc=2, argv=0xbffff4b4) at
/home/erik/php-5.3.6/sapi/cli/php_cli.c:1193
------------------------------------------------------------------------
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Edit this bug report at https://bugs.php.net/bug.php?id=54911&edit=1
