Generate toArray methods defined in classes inherited from collections as public even if they are declared with different visibility in Kotlin.

compiler/testData/codegen/box/toArray/toArrayShouldBePublicWithJava.kt

@@ -0,0 +1,68 @@
+// TARGET_BACKEND: JVM
+// WITH_RUNTIME
+
+// FILE: SingletonCollection.kt
+package test
+
+open class SingletonCollection<T>(val value: T) : AbstractCollection<T>() {
+    override val size = 1
+    override fun iterator(): Iterator<T> = listOf(value).iterator()
+
+    protected open fun toArray(): Array<Any?> =
+            arrayOf<Any?>(value)
+
+    protected open fun <E> toArray(a: Array<E>): Array<E> {
+        a[0] = value as E
+        return a
+    }
+}
+
+// FILE: JavaSingletonCollection.java
+import test.*;
+
+public class JavaSingletonCollection<T> extends SingletonCollection<T> {
+    public JavaSingletonCollection(T value) {
+        super(value);
+    }
+}
+
+// FILE: JavaSingletonCollection2.java
+import test.*;
+
+public class JavaSingletonCollection2<T> extends SingletonCollection<T> {
+    public JavaSingletonCollection2(T value) {
+        super(value);
+    }
+
+    public Object[] toArray() {
+        return super.toArray();
+    }
+
+    public <E> E[] toArray(E[] arr) {
+        return super.toArray(arr);
+    }
+}
+
+
+// FILE: box.kt
+import test.*
+
+fun box(): String {
+    val jsc = JavaSingletonCollection(42) as java.util.Collection<Int>
+    val test3 = jsc.toArray()
+    if (test3[0] != 42) return "Failed #3"
+
+    val test4 = arrayOf<Any?>(0)
+    jsc.toArray(test4)
+    if (test4[0] != 42) return "Failed #4"
+
+    val jsc2 = JavaSingletonCollection2(42) as java.util.Collection<Int>
+    val test5 = jsc2.toArray()
+    if (test5[0] != 42) return "Failed #5"
+
+    val test6 = arrayOf<Any?>(0)
+    jsc2.toArray(test6)
+    if (test6[0] != 42) return "Failed #6"
+
+    return "OK"
+}