aoqi@0: /*
aoqi@0:  * @test /nodynamiccopyright/
aoqi@0:  * @bug 8016177 8016178
aoqi@0:  * @summary structural most specific and stuckness
aoqi@0:  * @compile/fail/ref=T8016177b.out -XDrawDiagnostics T8016177b.java
aoqi@0:  */
aoqi@0: class T8016177b {
aoqi@0:     interface ToIntFunction<X> {
aoqi@0:         int m(X x);
aoqi@0:     }
aoqi@0: 
aoqi@0:     interface Function<X, Y> {
aoqi@0:         Y m(X x);
aoqi@0:     }
aoqi@0: 
aoqi@0:     <U, V> Function<U, V> id(Function<U, V> arg) { return null; }
aoqi@0: 
aoqi@0:     <U, V> Function<U, V> id2(Function<U, V> arg) { return null; }
aoqi@0:     <U> ToIntFunction<U> id2(ToIntFunction<U> arg) { return null; }
aoqi@0: 
aoqi@0: 
aoqi@0:     <X,Y,Z> X f(Y arg, Function<Y, Z> f) { return null; }
aoqi@0: 
aoqi@0:     <X,Y,Z> X f2(Y arg, Function<Y, Z> f) { return null; }
aoqi@0:     <X,Y> X f2(Y arg, ToIntFunction<Y> f) { return null; }
aoqi@0: 
aoqi@0:     <T> T g(T arg) { return null; }
aoqi@0: 
aoqi@0:     void test() {
aoqi@0:         g(f("hi", id(x->1))); //ok
aoqi@0:         g(f("hi", id2(x->1))); //ambiguous
aoqi@0:         g(f2("hi", id(x->1))); //ok
aoqi@0:     }
aoqi@0: }