checker/tests/nullness/init/Issue779.java

// Test case for Issue #779
// https://github.com/typetools/checker-framework/issues/779

import org.checkerframework.checker.initialization.qual.*;
import org.checkerframework.checker.nullness.qual.*;

class A {
  Object g = new Object();

  A() {
    foo();
  }

  void foo(@UnderInitialization(A.class) A this) {
    System.out.println("foo A " + g.toString());
  }
}

class B extends A {
  Object f = new Object();

  void foo(@UnderInitialization(A.class) B this) {
    // :: error: (dereference.of.nullable)
    System.out.println("foo B " + this.f.toString());
  }
}

public class Issue779 {
  public static void main(String[] args) {
    new B();
  }
}