how is it a bug when it even tells you that you have a technical incompatible 3rd party extension loaded?

Please provide the list of extensions you have enabled (php -m).

Same problem
php -m output:

$ php -m
PHP Warning:  JIT is incompatible with third party extensions that override zend_execute_ex(). JIT disabled. in Unknown on line 0

Warning: JIT is incompatible with third party extensions that override zend_execute_ex(). JIT disabled. in Unknown on line 0
[PHP Modules]
Core
ctype
curl
date
dom
fileinfo
filter
ftp
hash
iconv
json
libxml
mbstring
mysqlnd
openssl
pcntl
pcov
pcre
PDO
pdo_mysql
pdo_sqlite
Phar
posix
readline
Reflection
session
SimpleXML
sockets
sodium
SPL
sqlite3
standard
tideways_xhprof
tokenizer
xdebug
xml
xmlreader
xmlwriter
Zend OPcache
zip
zlib

[Zend Modules]
Xdebug
Zend OPcache

removing the xdebug ext solved the problem

> removing the xdebug ext solved the problem

Indeed, JIT is incompatible with extensions which setup user
opcode handlers (like Xdebug).  That is supposed to trigger a
warning[1].

Anyhow, let's see whether bahador had the same issue.

[1] <https://github.com/php/php-src/blob/php-8.0.1/ext/opcache/jit/zend_jit.c#L4193>

No feedback was provided. The bug is being suspended because
we assume that you are no longer experiencing the problem.
If this is not the case and you are able to provide the
information that was requested earlier, please do so and
change the status of the bug back to "Re-Opened". Thank you.

I have the same issue on Ubuntu without xdebug ext.

Linux version 5.4.0-1029-aws (buildd@lcy01-amd64-021) (gcc version 7.5.0 (Ubuntu 7.5.0-3ubuntu1~18.04))

PHP Warning:  JIT is incompatible with third party extensions that override zend_execute_ex(). JIT disabled. in Unknown on line 0
[PHP Modules]
apcu
calendar
Core
ctype
curl
date
dom
exif
FFI
fileinfo
filter
ftp
gd
gettext
hash
iconv
igbinary
imagick
json
libxml
mbstring
memcached
msgpack
mysqli
mysqlnd
openssl
pcntl
pcre
PDO
pdo_mysql
Phar
posix
readline
Reflection
session
shmop
SimpleXML
sockets
sodium
SPL
standard
sysvmsg
sysvsem
sysvshm
tideways
tokenizer
xml
xmlreader
xmlwriter
xsl
yaml
Zend OPcache
zlib

Did you try without tideways?  In any way, that would not be a bug
in PHP, but might be improvable according to feature request
#80621.

Hello cmb@php.net,

thanks for your fast answer.
I tried now without tideways and it works.
How can I use JIT with Tideways?
Or dose this currently not work without the feature request
#80621?

Hey Ricardo,

we are working on support for Tideways with the JIT. It requires changing the profiling instrumentation to use an entirely new Zend API (Observer API), but we hope to complete this in February.

Try disabling the XHPROF or Xdebug extension

It's been a few years, but this issue doesn't seem to have a solution yet. I just updated to PHP 8.2 and installed xdebug, and this warning keeps popping up.

Is there a resolution in 2024?

If this is still an issue with any of the actively supported PHP versions[1], please file a ticket at <https://github.com/php/php-src/issues>.

[1] <https://www.php.net/supported-versions>