/*

 * @test /nodynamiccopyright/

 * @bug 8175790

 * @summary field JCVariableDecl.vartype can't be null after post attribution analysis

 * @compile/fail/ref=NPEDueToErroneousLambdaTest.out -XDrawDiagnostics NPEDueToErroneousLambdaTest.java

 */

import java.util.List;

import java.util.function.Function;

public abstract class NPEDueToErroneousLambdaTest {

    interface R {}

    interface A {}

    interface S {}

    abstract <I, O> Function<I, O> p(final Function<I, O> function);

    abstract <I, O> List<O> t(Function<? super I, ? extends O> function);

    public void f() {

        t(p(new Function<A, Object>() {

            public List<Object> apply(A a) throws Exception {

                return t((Function<R, S>)input -> {

                        return t(p((Function<Boolean, S>) i -> null), null);

                });

            }

        }));

    }

}