serialize() throws error when object has member of type "float|int|null"

[captain-igloo]

Q	A
Bug report?	yes
Feature request?	no
BC Break report?	yes
RFC?	no

The following code throws an error under version 3.31.0 but not under 3.30.0:

class Foo
{
    public float|int|null $a = 99;
}

$serializer = SerializerBuilder::create()->build();
$serializer->serialize(new Foo(), 'json');

The error is:

In Parser.php line 30:                                                                                       
JMS\Serializer\Type\Parser::parse(): Return value must be of type array, null returned

[kargpfen]

I have the same problem 🙁

[scyzoryck]

Thanks! I will take a look in the evening on this issue.

[KevinMarques]

Same here. Thank you for taking a look ;)