withoutMiddleware and Closure middleware

[dugi-x]

• Laravel Version: 8.23.1
• PHP Version: 7.3
• Database Driver & Version:

Description:

When using the feature withoutMiddleware and have anonymos function as Closure middleware inside the __construct of the controller, The following error is returned:

class_exists() expects parameter 1 to be string, object given
vendor/laravel/framework/src/Illuminate/Routing/Router.php:728

728: if (! class_exists($name)) {
729:      return false;
730: }

the $name variable is Closure($request, $next)

Steps To Reproduce:

app/Http/Controllers/AppController.php

class AppController extends Controller
{
    public function __construct()
    {
        $this->middleware(function ($request, $next) {
            return $next($request);
        });
    }
}

routes/web.php

Route::post('/test', [AppController ::class, 'test'])->withoutMiddleware([\App\Http\Middleware\VerifyCsrfToken::class]));

[derekmd]

#36293 was merged 5 days ago so the fix should be tagged in tomorrow's 8.x release.