tests and fix for Bugzilla Bug 39993

   ajc stack trace on declaring hashcode() method in aspect 

added extra error-test for using super inside an inter-type declaration on 
an interface with multiple parents -- the correct parent is either
hard or impossible to determine in that case

1 files changed, 50 insertions, 0 deletions

diff --git a/tests/bugs/OverridingInterfaceObjectMethod.java b/tests/bugs/OverridingInterfaceObjectMethod.java
new file mode 100644
index 000000000..d9ea38b88
--- /dev/null
+++ b/tests/bugs/OverridingInterfaceObjectMethod.java
@@ -0,0 +1,50 @@
+import org.aspectj.testing.Tester;
+
+public class OverridingInterfaceObjectMethod {
+	private static final int VALUE = 10;
+	
+	public static void main(String[] args) {
+		Identifiable i = new C();
+		Tester.checkEqual(i.hashCode(), 42); //System.identityHashCode(i));
+		i.setId(new Id(VALUE));
+		Tester.checkEqual(i.hashCode(), VALUE);
+	}
+}
+
+//TODO explore complicated inheritance hierarchies
+
+class C implements Identifiable {}
+
+interface Base { }
+
+interface Identifiable extends Base {
+	void setId(Id id);
+	Id getId();
+}
+
+class Id {
+	public Id(int value) {
+		this.value = value;
+	}
+	int value;
+}
+ 
+aspect IdentifiableAspect {
+	private Id Identifiable.id = null;
+	public Id Identifiable.getId() {
+       return this.id;
+    }
+	public void Identifiable.setId(Id id) {
+		this.id = id;
+	}
+ 
+	public int Identifiable.hashCode() {
+		return (this.getId() == null)
+			? super.hashCode()
+			: this.getId().value;
+	}
+	
+	public int Base.hashCode() {
+		return 42;
+	}
+}