1 /* 2 * Copyright 2022 The JSpecify Authors. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 import org.jspecify.annotations.NullMarked; 17 import org.jspecify.annotations.Nullable; 18 import org.jspecify.annotations.NullnessUnspecified; 19 20 @NullMarked 21 class SuperVsObject { 22 interface Receiver<T extends @Nullable Object> {} 23 x0(Receiver<Object> r)24 <T extends @Nullable Object> Receiver<? super T> x0(Receiver<Object> r) { 25 // jspecify_nullness_mismatch 26 return r; 27 } 28 x1(Receiver<Object> r)29 <T extends @NullnessUnspecified Object> Receiver<? super T> x1(Receiver<Object> r) { 30 // jspecify_nullness_not_enough_information 31 return r; 32 } 33 x2(Receiver<Object> r)34 <T extends Object> Receiver<? super T> x2(Receiver<Object> r) { 35 return r; 36 } 37 } 38