Proper equality comparison for bound callable references represented as reflection objects

(including references to property accessors).

core/runtime.jvm/src/kotlin/jvm/internal/CallableReference.java

@@ -40,7 +40,7 @@ public abstract class CallableReference implements KCallable {
     private KCallable reflected;
 
     protected final Object receiver$0;
-    private static final Object NO_RECEIVER = new Object();
+    public static final Object NO_RECEIVER = new Object();
 
     public CallableReference() {
         this(NO_RECEIVER);
@@ -52,6 +52,10 @@ public abstract class CallableReference implements KCallable {
 
     protected abstract KCallable computeReflected();
 
+    public Object getBoundReceiver() {
+        return receiver$0;
+    }
+
     public KCallable compute() {
         KCallable result = reflected;
         if (result == null) {

core/runtime.jvm/src/kotlin/jvm/internal/FunctionReference.java

@@ -80,7 +80,7 @@ public class FunctionReference extends CallableReference implements FunctionImpl
             return getOwner().equals(other.getOwner()) &&
                    getName().equals(other.getName()) &&
                    getSignature().equals(other.getSignature()) &&
-                   Intrinsics.areEqual(receiver$0, other.receiver$0);
+                   Intrinsics.areEqual(getBoundReceiver(), other.getBoundReceiver());
         }
         if (obj instanceof KFunction) {
             return obj.equals(compute());

core/runtime.jvm/src/kotlin/jvm/internal/PropertyReference.java

@@ -51,7 +51,7 @@ public abstract class PropertyReference extends CallableReference implements KPr
             return getOwner().equals(other.getOwner()) &&
                    getName().equals(other.getName()) &&
                    getSignature().equals(other.getSignature()) &&
-                   Intrinsics.areEqual(receiver$0, other.receiver$0);
+                   Intrinsics.areEqual(getBoundReceiver(), other.getBoundReceiver());
         }
         if (obj instanceof KProperty) {
             return obj.equals(compute());