1 /*

     2  * @test /nodynamiccopyright/

     3  * @bug 8175790

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

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

     6  */

     7 

     8 import java.util.List;

     9 import java.util.function.Function;

    10 

    11 public abstract class NPEDueToErroneousLambdaTest {

    12 

    13     interface R {}

    14     interface A {}

    15     interface S {}

    16 

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

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

    19 

    20     public void f() {

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

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

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

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

    25                 });

    26             }

    27         }));

    28     }

    29 }