ID: 48591
Updated by: paj...@php.net
Reported By: pforsub at gmail dot com
-Status: Assigned
+Status: Wont fix
Bug Type: Scripting Engine problem
Operating System: Windows 2008
PHP Version: 5.2.9
Assigned To: pajoye
New Comment:
We do not support VC8 (2005) or VC9 (2008) for php 5.2 but VC6 SP6 with
the platform SDK 2003/02.
PHP 5.3 and later support VC9 SP1 (2008) with the SDK 6.1A.
Previous Comments:
------------------------------------------------------------------------
[2009-06-18 15:25:42] johan...@php.net
Without checking: I assume his code crates a memleak, and I think you
will have other issues when mixing different CRTs, Pierre, please
confirm
------------------------------------------------------------------------
[2009-06-18 02:32:21] pforsub at gmail dot com
Description:
------------
Custom PHP extension compiled in Visual Studio 2005. (which means it is
compiled with CRT library msvcr80.dll)
Extension declares internal class for exception. PHP cause crash
(0xc0000005 Access denied) during shutdown of execution.
Problem is that extension allocates string in its own CRT. This string
used then by php5ts without copying content of string (just using
pointer). During shutdown procedure extension is already unloaded, but
php5ts tries to free memory allocated in extension and cause crash.
Reproduce code:
---------------
Declaring exception in ZEND_MINIT_FUNCTION(myownextension):
zend_class_entry ce, *pce;
INIT_CLASS_ENTRY(ce, "MyOwnException", NULL);
pce = zend_register_internal_class_ex(&ce,
zend_exception_get_default(TSRMLS_C), NULL TSRMLS_CC);
Expected result:
----------------
Expected: No crash.
Proposed fix is:
--- Zend/zend_API.c Fri Mar 07 00:28:47 2008
+++ Zend/zend_API.c Thu Jun 18 08:40:53 2009
@@ -1992,6 +1992,7 @@
zend_class_entry *class_entry = malloc(sizeof(zend_class_entry));
char *lowercase_name = malloc(orig_class_entry->name_length + 1);
*class_entry = *orig_class_entry;
+ class_entry->name = strdup(orig_class_entry->name);
class_entry->type = ZEND_INTERNAL_CLASS;
zend_initialize_class_data(class_entry, 0 TSRMLS_CC);
Probably you should change also logic of INIT_CLASS_ENTRY macros to
avoid memory leak.
Actual result:
--------------
Crash occurs at the following call stack:
# ZEND_API void destroy_zend_class(zend_class_entry **pce)
# zend_hash_destroy(compiler_globals->class_table);
# static void compiler_globals_dtor(zend_compiler_globals
*compiler_globals TSRMLS_DC)
Line that cause exception is zend_opcode.c (200):
free(ce->name);
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=48591&edit=1
