Java 8 rules for method overrides:

- report errors on implementing methods of Any in interfaces
- update testData

~~~

Java 8 override restrictions: interface can't implement a method of 'Any'
- update compiler sources

compiler/testData/diagnostics/tests/java8Overrides/hidingMethodOfAny.kt

@@ -0,0 +1,5 @@
+interface IA {
+    <!VIRTUAL_MEMBER_HIDDEN!>fun toString(): String<!> = "IB"
+
+    override fun equals(other: Any?): Boolean
+}

compiler/testData/diagnostics/tests/java8Overrides/hidingMethodOfAny.txt

@@ -0,0 +1,7 @@
+package
+
+public interface IA {
+    public abstract override /*1*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ fun toString(): kotlin.String
+}

compiler/testData/diagnostics/tests/java8Overrides/implementingMethodOfAny.kt

@@ -0,0 +1,9 @@
+interface IA {
+    <!METHOD_OF_ANY_IMPLEMENTED_IN_INTERFACE!>override fun toString(): String = "IA"<!>
+
+    <!METHOD_OF_ANY_IMPLEMENTED_IN_INTERFACE!>override fun equals(other: Any?): Boolean = <!SUPERCLASS_NOT_ACCESSIBLE_FROM_TRAIT!>super<!>.equals(other)<!>
+
+    <!METHOD_OF_ANY_IMPLEMENTED_IN_INTERFACE!>override fun hashCode(): Int {
+        return 42;
+    }<!>
+}

compiler/testData/diagnostics/tests/java8Overrides/implementingMethodOfAny.txt

@@ -0,0 +1,7 @@
+package
+
+public interface IA {
+    public open override /*1*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ fun toString(): kotlin.String
+}

compiler/testData/diagnostics/tests/java8Overrides/notAMethodOfAny.kt

@@ -0,0 +1,3 @@
+interface IC {
+    fun toString(x: String): String = "IC$x"
+}

compiler/testData/diagnostics/tests/java8Overrides/notAMethodOfAny.txt

@@ -0,0 +1,8 @@
+package
+
+public interface IC {
+    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 open fun toString(/*0*/ x: kotlin.String): kotlin.String
+}

compiler/testData/diagnostics/tests/java8Overrides/overridingMethodOfAnyChain.kt

@@ -0,0 +1,13 @@
+interface IA
+
+interface IB : IA {
+    <!METHOD_OF_ANY_IMPLEMENTED_IN_INTERFACE!>override fun toString(): String = "IB"<!>
+}
+
+interface IC : IB {
+    <!METHOD_OF_ANY_IMPLEMENTED_IN_INTERFACE!>override fun toString(): String = "IC"<!>
+}
+
+interface ID : IC {
+    <!METHOD_OF_ANY_IMPLEMENTED_IN_INTERFACE!>override fun toString(): String = "ID"<!>
+}

compiler/testData/diagnostics/tests/java8Overrides/overridingMethodOfAnyChain.txt

@@ -0,0 +1,25 @@
+package
+
+public interface IA {
+    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 interface IB : IA {
+    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*/ fun toString(): kotlin.String
+}
+
+public interface IC : IB {
+    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*/ fun toString(): kotlin.String
+}
+
+public interface ID : IC {
+    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*/ fun toString(): kotlin.String
+}

compiler/testData/diagnostics/tests/java8Overrides/overridingMethodOfAnyDiamond.kt

@@ -0,0 +1,11 @@
+interface ILeft {
+    override fun toString(): String
+}
+
+interface IRight {
+    override fun toString(): String
+}
+
+interface IDiamond : ILeft, IRight {
+    <!METHOD_OF_ANY_IMPLEMENTED_IN_INTERFACE!>override fun toString(): String = "IDiamond"<!>
+}

compiler/testData/diagnostics/tests/java8Overrides/overridingMethodOfAnyDiamond.txt

@@ -0,0 +1,19 @@
+package
+
+public interface IDiamond : ILeft, IRight {
+    public open override /*2*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*2*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*2*/ fun toString(): kotlin.String
+}
+
+public interface ILeft {
+    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 abstract override /*1*/ fun toString(): kotlin.String
+}
+
+public interface IRight {
+    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 abstract override /*1*/ fun toString(): kotlin.String
+}