Mismatched nullability of type parameters when using Nullable with third party library that does not have null-safety

[violetagg]

I have a problem when I try to use @Nullable and third party library that does not have null-safety, this snippet:

class B {
	static final AttributeKey<@Nullable Object> RESULT_UPDATER = AttributeKey.valueOf("result");

	final Channel channel = new EmbeddedChannel();

	B() {
		System.out.println("Current Attribute " + channel.attr(RESULT_UPDATER).get());
	}
}

Gives the following error:

/nullaway-mismatched-nullability/src/main/java/org/example/B.java:9: error: [NullAway] Cannot assign from type AttributeKey<Object> to type AttributeKey<@Nullable Object> due to mismatched nullability of type parameters
	static final AttributeKey<@Nullable Object> RESULT_UPDATER = AttributeKey.valueOf("result");
	                                            ^

The repository with the reproducible example can be found here
https://github.com/violetagg/nullaway-mismatched-nullability

[msridhar]

Thanks again for the report! This is again #1075 and you can work around with an explicit type argument to the call. I will report back when we have a fix.

[violetagg]

Thanks