Cannot use a callable in _controller request attribute #23456
Description
| Q | A |
|---|---|
| Bug report? | yes |
| Feature request? | no |
| BC Break report? | no |
| RFC? | no |
| Symfony version | 3.3.4 |
ResolveControllerNameSubscriber is not checking for the _controller request attribute to be a string. If a callable (or a closure) is set, it will raise the following error:
strpos() expects parameter 1 to be string, array given