php-src/ext/zend_test/php_test.h
Florian Engelhardt 8d2df86b06
Fix invalid opline in OOM handlers within ZEND_FUNC_GET_ARGS and ZEND_BIND_STATIC (#12768)
* fix segfault in `ZEND_BIND_STATIC`

In case a `ZEND_BIND_STATIC` is being executed, while the current chunk is full,
the `zend_array_dup()` call will trigger a OOM in ZendMM which will crash, as
the opline might be a dangling pointer.

* add missing test

* `assert()`ing seems easier than trying to make the compiler to not optimize

* moved from function call to INI setting, so we can use this in other places as well

* make `assert()` work no NDEBUG builds

* document magic number

* fix segfault in `ZEND_FUNC_GET_ARGS`

In case a `ZEND_FUNC_GET_ARGS` is being executed, while the current chunk is
full, the `zend_new_array()` call will trigger a OOM in ZendMM which will crash,
as the opline might be a dangling pointer.

---------

Co-authored-by: Florian Engelhardt <florian@engelhardt.tc>
2023-11-25 00:54:02 +01:00

86 lines
2.7 KiB
C

/*
+----------------------------------------------------------------------+
| Copyright (c) The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| https://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: |
+----------------------------------------------------------------------+
*/
#ifndef PHP_TEST_H
#define PHP_TEST_H
#include "fiber.h"
extern zend_module_entry zend_test_module_entry;
#define phpext_zend_test_ptr &zend_test_module_entry
#define PHP_ZEND_TEST_VERSION "0.1.0"
#ifdef ZTS
#include "TSRM.h"
#endif
#if defined(ZTS) && defined(COMPILE_DL_ZEND_TEST)
ZEND_TSRMLS_CACHE_EXTERN()
#endif
ZEND_BEGIN_MODULE_GLOBALS(zend_test)
int observer_enabled;
int observer_show_output;
int observer_observe_all;
int observer_observe_includes;
int observer_observe_functions;
zend_array *observer_observe_function_names;
int observer_show_return_type;
int observer_show_return_value;
int observer_show_init_backtrace;
int observer_show_opcode;
char *observer_show_opcode_in_user_handler;
int observer_nesting_depth;
int observer_fiber_init;
int observer_fiber_switch;
int observer_fiber_destroy;
int observer_execute_internal;
HashTable global_weakmap;
int replace_zend_execute_ex;
int register_passes;
int observe_opline_in_zendmm;
zend_mm_heap* zend_orig_heap;
zend_mm_heap* zend_test_heap;
zend_test_fiber *active_fiber;
ZEND_END_MODULE_GLOBALS(zend_test)
extern ZEND_DECLARE_MODULE_GLOBALS(zend_test)
#define ZT_G(v) ZEND_MODULE_GLOBALS_ACCESSOR(zend_test, v)
struct bug79096 {
uint64_t a;
uint64_t b;
};
#ifdef PHP_WIN32
# define PHP_ZEND_TEST_API __declspec(dllexport)
#elif defined(__GNUC__) && __GNUC__ >= 4
# define PHP_ZEND_TEST_API __attribute__ ((visibility("default")))
#else
# define PHP_ZEND_TEST_API
#endif
PHP_ZEND_TEST_API int ZEND_FASTCALL bug78270(const char *str, size_t str_len);
PHP_ZEND_TEST_API struct bug79096 bug79096(void);
PHP_ZEND_TEST_API void bug79532(off_t *array, size_t elems);
extern PHP_ZEND_TEST_API int *(*bug79177_cb)(void);
PHP_ZEND_TEST_API void bug79177(void);
#endif