JIT: undefined variable $i

Description

The following code:

<?php
        for ($i = 4; $i > 0; --$i) {
            if ($i > $position) {
                $matches[$i] = $pad;
            } elseif ($i === $position && $increment) {
                $matches[$i] += $increment;
                // If $matches[$i] was 0, carry the decrement
                if ($matches[$i] < 0) {
                    $matches[$i] = $pad;
                    --$position;

                    // Return null on a carry overflow
                    if ($i === 1) {
                        return null;
                    }
                }
            }
        }

Full source: https://github.com/composer/semver/blob/3.4.0/src/VersionParser.php#L541

Resulted in this output:

ErrorException: Uncaught ErrorException (500): Undefined variable $i in /app/vendor/composer/semver/src/VersionParser.php:541

But I expected this output instead:

no error

Full stack trace:

#0 /app/vendor/laravel/framework/src/Illuminate/Foundation/Bootstrap/HandleExceptions.php(255): Illuminate\Foundation\Bootstrap\HandleExceptions->handleError()
#1 /app/vendor/composer/semver/src/VersionParser.php(541): Illuminate\Foundation\Bootstrap\HandleExceptions->Illuminate\Foundation\Bootstrap\{closure}()
#2 /app/vendor/composer/semver/src/VersionParser.php(410): Composer\Semver\VersionParser->manipulateVersionString()
#3 /app/vendor/composer/semver/src/VersionParser.php(276): Composer\Semver\VersionParser->parseConstraint()
#4 /app/vendor/composer/InstalledVersions.php(122): Composer\Semver\VersionParser->parseConstraints()
#5 /app/vendor/maatwebsite/excel/src/Cache/CacheManager.php(43): Composer\InstalledVersions::satisfies()
#6 /app/vendor/laravel/framework/src/Illuminate/Support/Manager.php(106): Maatwebsite\Excel\Cache\CacheManager->createMemoryDriver()
#7 /app/vendor/laravel/framework/src/Illuminate/Support/Manager.php(80): Illuminate\Support\Manager->createDriver()
#8 /app/vendor/maatwebsite/excel/src/SettingsProvider.php(31): Illuminate\Support\Manager->driver()
#9 /app/vendor/maatwebsite/excel/src/SettingsProvider.php(25): Maatwebsite\Excel\SettingsProvider->configureCellCaching()
#10 /app/vendor/maatwebsite/excel/src/ExcelServiceProvider.php(52): Maatwebsite\Excel\SettingsProvider->provide()
#11 /app/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(1073): Maatwebsite\Excel\ExcelServiceProvider->Maatwebsite\Excel\{closure}()
#12 /app/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(1016): Illuminate\Foundation\Application->fireAppCallbacks()
#13 /app/vendor/laravel/framework/src/Illuminate/Foundation/Bootstrap/BootProviders.php(17): Illuminate\Foundation\Application->boot()
#14 /app/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(263): Illuminate\Foundation\Bootstrap\BootProviders->bootstrap()
#15 /app/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(186): Illuminate\Foundation\Application->bootstrapWith()
#16 /app/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(170): Illuminate\Foundation\Http\Kernel->bootstrap()
#17 /app/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(144): Illuminate\Foundation\Http\Kernel->sendRequestThroughRouter()
#18 /app/public/index.php(51): Illuminate\Foundation\Http\Kernel->handle()
#19 {main}

Next Symfony\Component\HttpKernel\Exception\HttpException: Undefined variable $i in /app/vendor/laravel/framework/src/Illuminate/Foundation/Exceptions/Handler.php:646
Stack trace:
#0 /app/vendor/laravel/framework/src/Illuminate/Foundation/Exceptions/Handler.php(556): Illuminate\Foundation\Exceptions\Handler->prepareResponse()
#1 /app/vendor/laravel/framework/src/Illuminate/Foundation/Exceptions/Handler.php(473): Illuminate\Foundation\Exceptions\Handler->renderExceptionResponse()
#2 /app/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(509): Illuminate\Foundation\Exceptions\Handler->render()
#3 /app/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(148): Illuminate\Foundation\Http\Kernel->renderException()
#4 /app/public/index.php(51): Illuminate\Foundation\Http\Kernel->handle()
#5 {main}

It is impossible for this error to happen, but also it happens only intermittently with no re-deployment/code-changes.

I suspect something with opcache, current config:

opcache.memory_consumption = 128
opcache.interned_strings_buffer = 8
opcache.max_accelerated_files = 32531
opcache.validate_timestamps = Off
opcache.jit = "function"
opcache.jit_buffer_size = 128M

It seems to happen more often when vapor-core package is installed - despite not running on vapor.

PHP Version

PHP 8.2.21 + 8.3.9

Operating System

Debian Bookworm