typetools / typetools/checker-framework

Nullness Checker warning about non-null field in top-level lambda

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#5,194 4 comments 1 reaction 1 assignee View on GitHub

@smillst is already working on this.

Since Sep 24, 2023.

Dominant language
Java
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Description

Running the Nullness Checker on this code:

public class LambdaInit {
  String f1;

  Object o =
      new Object() {
        @Override
        public String toString() {
          f1.toString();
          return "";
        }
      };
}

yields

error: (dereference.of.nullable)

at f1.toString(). It should not.

There is a test case in checker/tests/nullness/java8/lambda/LambdaInit.java.

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