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// Test case for Issue #152
// https://github.com/typetools/checker-framework/issues/152
// @skip-test
import org.checkerframework.checker.lock.qual.GuardedBy;
public class ThisSuper {
class MyClass {
Object field;
}
class LockExample {
protected final Object myLock = new Object();
protected @GuardedBy("myLock") MyClass locked;
@GuardedBy("this.myLock") MyClass m1;
protected @GuardedBy("this.myLock") MyClass locked2;
public void accessLock() {
synchronized (myLock) {
this.locked.field = new Object();
}
}
}
class LockExampleSubclass extends LockExample {
private final Object myLock = new Object();
private @GuardedBy("this.myLock") MyClass locked;
@GuardedBy("this.myLock") MyClass m2;
public LockExampleSubclass() {
final LockExampleSubclass les1 = new LockExampleSubclass();
final LockExampleSubclass les2 = new LockExampleSubclass();
final LockExampleSubclass les3 = les2;
LockExample le1 = new LockExample();
synchronized (super.myLock) {
super.locked.toString();
super.locked2.toString();
// :: error: (contracts.precondition.not.satisfied)
locked.toString();
}
synchronized (myLock) {
// :: error: (contracts.precondition.not.satisfied)
super.locked.toString();
// :: error: (contracts.precondition.not.satisfied)
super.locked2.toString();
locked.toString();
}
// :: error: (assignment.type.incompatible)
les1.locked = le1.locked;
// :: error: (assignment.type.incompatible)
les1.locked = le1.locked2;
// :: error: (assignment.type.incompatible)
les1.locked = les2.locked;
// :: error: (assignment.type.incompatible)
this.locked = super.locked;
// :: error: (assignment.type.incompatible)
this.locked = super.locked2;
// :: error: (assignment.type.incompatible)
m1 = m2;
}
@Override
public void accessLock() {
synchronized (myLock) {
this.locked.field = new Object();
// :: error: (lock.not.held)
super.locked.field = new Object();
System.out.println(
this.locked.field
+ " "
+
// :: error: (lock.not.held)
super.locked.field);
System.out.println(
"Are locks equal? " + (super.locked == this.locked ? "yes" : "no"));
}
}
}
}
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