Fix for KT-3684: IllegalAccess on a private property of the outer class

#KT-3684 Fixed

compiler/frontend/src/org/jetbrains/jet/lang/resolve/OverrideResolver.java

@@ -252,7 +252,7 @@ public class OverrideResolver {
             @NotNull ClassDescriptor current,
             @NotNull DescriptorSink sink
     ) {
-        Collection<CallableMemberDescriptor> visibleOverridables = filterVisible(current, overridables);
+        Collection<CallableMemberDescriptor> visibleOverridables = filterVisibleFakeOverrides(current, overridables);
         Modality modality = getMinimalModality(visibleOverridables);
         boolean allInvisible = visibleOverridables.isEmpty();
         Collection<CallableMemberDescriptor> effectiveOverridden = allInvisible ? overridables : visibleOverridables;
@@ -277,14 +277,15 @@ public class OverrideResolver {
     }
 
     @NotNull
-    private static Collection<CallableMemberDescriptor> filterVisible(
+    private static Collection<CallableMemberDescriptor> filterVisibleFakeOverrides(
             @NotNull final ClassDescriptor current,
             @NotNull Collection<CallableMemberDescriptor> toFilter
     ) {
         return Collections2.filter(toFilter, new Predicate<CallableMemberDescriptor>() {
             @Override
             public boolean apply(@Nullable CallableMemberDescriptor descriptor) {
-                return Visibilities.isVisible(descriptor, current);
+                //nested class could capture private member, so check for private visibility added
+                return descriptor.getVisibility() != Visibilities.PRIVATE && Visibilities.isVisible(descriptor, current);
             }
         });
     }

compiler/testData/codegen/box/objects/kt3684.kt

@@ -0,0 +1,16 @@
+open class X(private val n: String) {
+
+    fun foo(): String {
+        return object : X("inner") {
+            fun print(): String {
+                return n;
+            }
+        }.print()
+    }
+}
+
+
+fun box() : String {
+  return X("OK").foo()
+}
+

compiler/tests/org/jetbrains/jet/codegen/generated/BlackBoxCodegenTestGenerated.java

@@ -3168,6 +3168,11 @@ public class BlackBoxCodegenTestGenerated extends AbstractBlackBoxCodegenTest {
             doTest("compiler/testData/codegen/box/objects/kt3238.kt");
         }
         
+        @TestMetadata("kt3684.kt")
+        public void testKt3684() throws Exception {
+            doTest("compiler/testData/codegen/box/objects/kt3684.kt");
+        }
+        
         @TestMetadata("kt535.kt")
         public void testKt535() throws Exception {
             doTest("compiler/testData/codegen/box/objects/kt535.kt");