1 /* 2 * Copyright 2020 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 abstract class NotNullMarkedLocalVariable { 21 @NullMarked 22 interface Super { string()23 String string(); 24 stringUnspec()25 @NullnessUnspecified String stringUnspec(); 26 stringUnionNull()27 @Nullable String stringUnionNull(); 28 } 29 30 abstract class Sub implements Super { go()31 void go() { 32 String string = string(); 33 String stringUnspec = stringUnspec(); 34 String stringUnionNull = stringUnionNull(); 35 36 synchronized (string) { 37 } 38 39 // jspecify_nullness_not_enough_information 40 synchronized (stringUnspec) { 41 } 42 43 // jspecify_nullness_mismatch 44 synchronized (stringUnionNull) { 45 } 46 } 47 } 48 } 49