REDUNDANT_OPEN_FOR_INTERFACE warning: reported for open members without implementation #KT-12452 Fixed

compiler/testData/diagnostics/tests/delegation/Delegation_MultipleDelegates.kt

@@ -1,10 +1,10 @@
 // !DIAGNOSTICS: -CONFLICTING_JVM_DECLARATIONS
 interface One {
-  public open fun foo() : Int
+  public <!REDUNDANT_OPEN_IN_INTERFACE!>open<!> fun foo() : Int
   private fun boo() = 10
 }
 interface Two {
-  public open fun foo() : Int
+  public <!REDUNDANT_OPEN_IN_INTERFACE!>open<!> fun foo() : Int
 }
 
 interface OneImpl : One {

compiler/testData/diagnostics/tests/modifiers/openInInterface.kt

@@ -0,0 +1,10 @@
+interface My {
+    <!REDUNDANT_OPEN_IN_INTERFACE!>open<!> fun foo()
+    open fun bar() {}
+    <!REDUNDANT_MODIFIER!>open<!> abstract fun baz(): Int
+
+    <!REDUNDANT_OPEN_IN_INTERFACE!>open<!> val x: Int
+    open val y: String
+        get() = ""
+    <!REDUNDANT_MODIFIER!>open<!> abstract val z: Double
+}

compiler/testData/diagnostics/tests/modifiers/openInInterface.txt

@@ -0,0 +1,13 @@
+package
+
+public interface My {
+    public abstract val x: kotlin.Int
+    public open val y: kotlin.String
+    public abstract val z: kotlin.Double
+    public open fun bar(): kotlin.Unit
+    public abstract fun baz(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public abstract fun foo(): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}

compiler/testData/diagnostics/tests/override/kt880.kt

@@ -1,7 +1,7 @@
 // KT-880 Overload resolution ambiguity
 
 public interface I {
-    open fun test() : Unit
+    <!REDUNDANT_OPEN_IN_INTERFACE!>open<!> fun test() : Unit
 }
 
 abstract public class A() {