TYPO3 Core

This fails (e.g. in a controller): $this->objectManager->get(MyClass:class, null) if the constructur of MyClass uses __construct(?MyType $foo) - an exception is thrown:

throw new \InvalidArgumentException('not a correct info array of constructor dependencies was passed!', 1476107941);

Changing the ctor to __construct(MyType $foo = null) works, but this means something different. The ? means it is nullable but required, = null means it is nullable but optional. There are common cases where arguments are nullable and required in multi-argument constructors: e.g, where one passes five arguments where only the fifth is optional, but the second is nullable.

PHP allows optional argument declaration in the middle of the arguemnt list, but it is bad practice (and meaningless).

Extbase should support nullable types.

Found on v8, but valid for all others, I assume.