Fixed visibility check on a property with private setter of the subclass

#KT-3689 Fixed

compiler/backend/src/org/jetbrains/kotlin/codegen/context/CodegenContext.java

@@ -609,8 +609,11 @@ public abstract class CodegenContext<T extends DeclarationDescriptor> {
                                                                 withinInliningContext, superCallTarget != null);
 
             PropertySetterDescriptor setter = propertyDescriptor.getSetter();
-            int setterAccessFlag = setter == null ? propertyAccessFlag
-                                                  : propertyAccessFlag | getVisibilityAccessFlag(setter);
+
+            int setterAccessFlag = propertyAccessFlag;
+            if (setter != null && setter.getVisibility().normalize() != Visibilities.INVISIBLE_FAKE) {
+                setterAccessFlag = propertyAccessFlag | getVisibilityAccessFlag(setter);
+            }
             boolean setterAccessorRequired = isAccessorRequired(setterAccessFlag, unwrappedDescriptor, descriptorContext,
                                                                 withinInliningContext, superCallTarget != null);
 

compiler/testData/diagnostics/tests/controlFlowAnalysis/privateSetter.kt

@@ -0,0 +1,17 @@
+open class X(s : String) {
+    public var n: String = s
+        private set
+
+}
+
+class Z : X("subclass") {
+    fun print(): String {
+        <!INVISIBLE_SETTER!>n<!> = n
+        return n;
+    }
+}
+
+
+fun box() : String {
+    return Z().print() //error
+}

compiler/testData/diagnostics/tests/controlFlowAnalysis/privateSetter.txt

@@ -0,0 +1,20 @@
+package
+
+public fun box(): kotlin.String
+
+public open class X {
+    public constructor X(/*0*/ s: kotlin.String)
+    public final var n: kotlin.String
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+public final class Z : X {
+    public constructor Z()
+    public final override /*1*/ /*fake_override*/ var n: kotlin.String
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public final fun print(): kotlin.String
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}

compiler/tests/org/jetbrains/kotlin/checkers/DiagnosticsTestGenerated.java

@@ -3411,6 +3411,12 @@ public class DiagnosticsTestGenerated extends AbstractDiagnosticsTest {
                 doTest(fileName);
             }
 
+            @TestMetadata("privateSetter.kt")
+            public void testPrivateSetter() throws Exception {
+                String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/diagnostics/tests/controlFlowAnalysis/privateSetter.kt");
+                doTest(fileName);
+            }
+
             @TestMetadata("propertiesInitWithOtherInstance.kt")
             public void testPropertiesInitWithOtherInstance() throws Exception {
                 String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/diagnostics/tests/controlFlowAnalysis/propertiesInitWithOtherInstance.kt");

core/descriptors/src/org/jetbrains/kotlin/descriptors/impl/PropertyDescriptorImpl.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2015 JetBrains s.r.o.
+ * Copyright 2010-2016 JetBrains s.r.o.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -259,7 +259,7 @@ public class PropertyDescriptorImpl extends VariableDescriptorWithInitializerImp
         substitutedDescriptor.setType(outType, substitutedTypeParameters, substitutedDispatchReceiver, substitutedReceiverType);
 
         PropertyGetterDescriptorImpl newGetter = getter == null ? null : new PropertyGetterDescriptorImpl(
-                substitutedDescriptor, getter.getAnnotations(), newModality, getter.getVisibility(),
+                substitutedDescriptor, getter.getAnnotations(), newModality, normalizeVisibility(getter.getVisibility(), kind),
                 getter.isDefault(), getter.isExternal(), kind, original == null ? null : original.getGetter(),
                 SourceElement.NO_SOURCE
         );
@@ -269,7 +269,7 @@ public class PropertyDescriptorImpl extends VariableDescriptorWithInitializerImp
             newGetter.initialize(returnType != null ? substitutor.substitute(returnType, Variance.OUT_VARIANCE) : null);
         }
         PropertySetterDescriptorImpl newSetter = setter == null ? null : new PropertySetterDescriptorImpl(
-                substitutedDescriptor, setter.getAnnotations(), newModality, setter.getVisibility(),
+                substitutedDescriptor, setter.getAnnotations(), newModality, normalizeVisibility(setter.getVisibility(), kind),
                 setter.isDefault(), setter.isExternal(), kind, original == null ? null : original.getSetter(),
                 SourceElement.NO_SOURCE
         );
@@ -308,6 +308,13 @@ public class PropertyDescriptorImpl extends VariableDescriptorWithInitializerImp
         return substitutedDescriptor;
     }
 
+    private static Visibility normalizeVisibility(Visibility prev, Kind kind) {
+        if (kind == Kind.FAKE_OVERRIDE && Visibilities.isPrivate(prev.normalize())) {
+            return Visibilities.INVISIBLE_FAKE;
+        }
+        return prev;
+    }
+
     private static FunctionDescriptor getSubstitutedInitialSignatureDescriptor(
             @NotNull TypeSubstitutor substitutor,
             @NotNull PropertyAccessorDescriptor accessorDescriptor