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/*
* @test /nodynamiccopyright/
* @bug 8016177 8016178
* @summary structural most specific and stuckness
* @compile/fail/ref=T8016177a.out -XDrawDiagnostics T8016177a.java
*/
import java.util.List;
class T8016177a {
interface ToIntFunction<X> {
int m(X x);
}
interface Function<X, Y> {
Y m(X x);
}
<T,R> void m1(List<T> s, Function<T,R> f) { }
<T,R> void m1(List<T> s, ToIntFunction<T> f) { }
<T,R> List<R> m2(List<T> s, Function<T,R> f) { return null; }
<T,R> List<R> m2(List<T> s, ToIntFunction<T> f) { return null; }
<T,R> List<T> m3(List<T> s, Function<T,R> f) { return null; }
<T,R> List<R> m3(List<T> s, ToIntFunction<T> f) { return null; }
<T,R> List<T> m4(List<T> s, Function<T,R> f) { return null; }
<T,R> List<T> m4(List<T> s, ToIntFunction<T> f) { return null; }
<T,R> List<R> m5(List<T> s, Function<T,R> f) { return null; }
<T,R> List<T> m5(List<T> s, ToIntFunction<T> f) { return null; }
<T extends R,R> List<R> m6(List<T> s, Function<T,R> f) { return null; }
<T extends R,R> List<T> m6(List<T> s, ToIntFunction<T> f) { return null; }
void test(List<String> ss) {
m1(ss, s->s.length()); //ambiguous
m2(ss, s->s.length()); //ambiguous
m3(ss, s->s.length()); //ambiguous
m4(ss, s->s.length()); //ambiguous
m5(ss, s->s.length()); //ambiguous
m6(ss, s->s.length()); //ambiguous
}
}
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