Description:
------------
I've been trying out preloading, and am running into a segfault using PHP 7.4.2, only when using php-fpm.

I've been using this preload script: https://github.com/brendt/aggregate.stitcher.io/blob/master/preload.php

When using this preload script via PHP's built-in webserver, all works fine. For reference, this is the command I used to test this: `php -c /etc/php/7.4/fpm/php.ini -S aggregate.stitcher.io:8001 -t public -d opcache.preload=preload.php -d opcache.user=forge`

However, when using the same preloading script via php-fpm, a segfault occurs. Here's a snippet from the php-fpm logs, this message gets repeated over and over again:

```
[05-Feb-2020 12:06:01] WARNING: [pool www] child 2961 exited on signal 11 (SIGSEGV - core dumped) after 0.942953 seconds from start
[05-Feb-2020 12:06:01] NOTICE: [pool www] child 2972 started
[05-Feb-2020 12:06:01] WARNING: [pool www] child 2963 exited on signal 11 (SIGSEGV - core dumped) after 0.947206 seconds from start
[05-Feb-2020 12:06:01] NOTICE: [pool www] child 2977 started
[05-Feb-2020 12:06:01] WARNING: [pool www] child 2965 exited on signal 11 (SIGSEGV - core dumped) after 1.009507 seconds from start
[05-Feb-2020 12:06:01] NOTICE: [pool www] child 2979 started
```

Checking php-fpm's status using `sudo service php7.4-fpm status` after restarting it, I get the following output:

```
…
Feb 05 12:04:42 brent php-fpm7.4[2039]: [Preloader] Preloaded `Illuminate\Mail\TransportManager`
Feb 05 12:04:42 brent php-fpm7.4[2039]: [Preloader] Preloaded `Illuminate\Mail\Markdown`
Feb 05 12:04:42 brent php-fpm7.4[2039]: [Preloader] Preloaded 1127 classes
Feb 05 12:04:42 brent systemd[1]: Started The PHP 7.4 FastCGI Process Manager.
```

So php-fpm manages to start, it only crashes as soon as a request arrives at the server. 

Anything I can do to provide more information?