1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
|
import org.checkerframework.checker.nullness.qual.*;
import org.checkerframework.checker.nullness.qual.EnsuresNonNull;
public class AssertNonNullTest {
public @Nullable String s;
// :: error: (contracts.postcondition.not.satisfied)
public @EnsuresNonNull("s") void makeNN() {
s = null;
}
public static void main(String[] args) {
AssertNonNullTest a = new AssertNonNullTest();
// :: error: (dereference.of.nullable)
a.s.equals("we");
AssertNonNullTest b = new AssertNonNullTest();
b.makeNN();
b.s.equals("we");
}
}
|
