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Date: Thu, 20 Apr 2017 19:27:49 -0300
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Subject: Segmentation fault when try to get the 'current_execute_data' on a
 PHP extension
From: danielgatis@gmail.com (daniel gatis)

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Content-Type: text/plain; charset=UTF-8

I'm trying to develop a php extension for print all functions call like a
backtrace. But when I'm trying to get the current function a segmentation
fault is throw. What is the problem with my code?

My php test code:

function a() {
    b();
}

function b() {
    c();
}

function c() {
    var_dump(hello_world());
}

a();


My extension code:


#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "php.h"
#include "php_ini.h"
#include "ext/standard/info.h"
#include "php_hello_world.h"

PHP_FUNCTION(hello_world)
{
    zend_execute_data *ptr  = NULL;
    ptr = EG(current_execute_data); // <----- Segmentation fault (core
dumped)
}

const zend_function_entry hello_world_functions[] = {
    PHP_FE(hello_world, NULL)
    PHP_FE_END
};

zend_module_entry hello_world_module_entry = {
    STANDARD_MODULE_HEADER,
    "hello_world",
    hello_world_functions,
    NULL,
    NULL,
    NULL,
    NULL,
    NULL,
    PHP_hello_world_VERSION,
    STANDARD_MODULE_PROPERTIES
};

#ifdef COMPILE_DL_hello_world
#ifdef ZTS
ZEND_TSRMLS_CACHE_DEFINE()
#endif
ZEND_GET_MODULE(hello_world)
#endif

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