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// Test case for Issue 1046:
// https://github.com/typetools/checker-framework/issues/1046
// Additonal test case: checker/tests/nullness/Issue1046.java
import java.util.List;
import java.util.function.Function;
import org.checkerframework.checker.nullness.qual.UnknownKeyFor;
class Issue1046Java8 {
interface EnumMarker {}
enum MyEnum implements EnumMarker {
A,
B;
}
static class NS2Lists {
@SuppressWarnings("nullness")
static <F, T> List<T> transform(List<F> p, Function<? super F, ? extends T> q) {
return null;
}
static <F, T> List<F> transform2(List<F> p, Function<? super F, ? extends T> q) {
return p;
}
}
abstract class NotSubtype2 {
void test(List<MyEnum> p) {
NS2Lists.transform2(p, foo());
NS2Lists.transform(p, foo());
}
abstract Function<? super @UnknownKeyFor EnumMarker, Number> foo();
}
}
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