Segmentation fault after upgrading from v3 to v4

[bobkorinek]

Recently I wanted to upgrade my project running latest Phalcon v3 to Phalcon v4, but I got stuck, when I got segmentation fault.

#0  0x0000562af5805d3a in _emalloc_56 ()
#1  0x0000562af583872d in _zend_new_array_0 ()
#2  0x0000562af5845bde in zend_fetch_debug_backtrace ()
#3  0x0000562af584c3ba in ?? ()
#4  0x0000562af582e939 in object_init_ex ()
#5  0x0000562af567c1d3 in zend_throw_exception ()
#6  0x0000562af5679403 in zend_throw_error ()
#7  0x0000562af5677da9 in ?? ()
#8  0x0000562af5678345 in ?? ()
#9  0x0000562af5893477 in ?? ()
#10 0x0000562af58aeddf in execute_ex ()
#11 0x0000562af58b3778 in execute_ex ()
#12 0x0000562af58b3778 in execute_ex ()
#13 0x0000562af58b3778 in execute_ex ()
#14 0x0000562af58b3778 in execute_ex ()
#15 0x0000562af581df4f in zend_call_function ()
#16 0x00007f4ddb2ba1a3 in zephir_call_user_func_array_noex () from /usr/lib/php/20190902/phalcon.so
#17 0x00007f4ddb3595e1 in zim_Phalcon_Dispatcher_AbstractDispatcher_callActionMethod ()
   from /usr/lib/php/20190902/phalcon.so
#18 0x0000562af581e152 in zend_call_function ()
#19 0x00007f4ddb2c2953 in zephir_call_user_function () from /usr/lib/php/20190902/phalcon.so
#20 0x00007f4ddb2c3257 in zephir_call_class_method_aparams () from /usr/lib/php/20190902/phalcon.so
#21 0x00007f4ddb698603 in zim_Phalcon_Dispatcher_AbstractDispatcher_dispatch ()
   from /usr/lib/php/20190902/phalcon.so
#22 0x0000562af581e152 in zend_call_function ()
#23 0x00007f4ddb2c2953 in zephir_call_user_function () from /usr/lib/php/20190902/phalcon.so
#24 0x00007f4ddb2c3257 in zephir_call_class_method_aparams () from /usr/lib/php/20190902/phalcon.so
#25 0x00007f4ddb5f30e6 in zim_Phalcon_Mvc_Application_handle () from /usr/lib/php/20190902/phalcon.so
#26 0x0000562af58b382b in execute_ex ()
#27 0x0000562af5895274 in ?? ()
#28 0x0000562af58aee1b in execute_ex ()
#29 0x0000562af58b35fe in execute_ex ()
#30 0x0000562af58b661b in zend_execute ()
#31 0x0000562af582cb6c in zend_execute_scripts ()
#32 0x0000562af57cc2a0 in php_execute_script ()
--Type <RET> for more, q to quit, c to continue without paging--
#33 0x0000562af5693a4e in ?? ()
#34 0x00007f4de09a40b3 in __libc_start_main (main=0x562af5692b20, argc=4, argv=0x7ffc6f94f838, 
    init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc6f94f828)
    at ../csu/libc-start.c:308
#35 0x0000562af569484e in _start ()

I tried to refactor all new classes and interfaces that had been changed and after a while I could run some parts of my app. When I was testing the app I discovered that some parts didn't work and stopped due to segmentation fault. I tried to lookup the line, which caused the app to stop and I found a line with fetching some rows from database.

$result = $db->fetchAll($query);

I have tried to change the content of the query, but it didn't have any effect. When I put this line somewhere before the app crashes, It works just fine.

Does anybody have any idea how this could be solved? I am really stuck at this moment.

[Jeckerson]

Hello, how did you installed Phalcon?

[bobkorinek]

First, I tried to install it with apt from the http://ppa.launchpad.net/ondrej/php/ubuntu repository. This I tried with PHP 7.2 and with PHP 7.4 and got same result for both. I also tried to download the apt package from packagecloud directly, but still same. Last thing I tried was to compile it, as described in docs, and manually install it, but nothing there either. All of the installations have been successful, but none of them solved the problem.