KT-1560

Report warning on extensions shadowed by members.

compiler/testData/diagnostics/tests/extensions/ExtensionFunctions.kt

@@ -51,7 +51,7 @@ import outer.*
           val foo : Int = 0
         }
 
-        fun Any.equals(<!UNUSED_PARAMETER!>other<!> : Any?) : Boolean = true
+        fun Any.<!EXTENSION_SHADOWED_BY_MEMBER!>equals<!>(<!UNUSED_PARAMETER!>other<!> : Any?) : Boolean = true
         fun Any?.equals1(<!UNUSED_PARAMETER!>other<!> : Any?) : Boolean = true
         fun Any.equals2(<!UNUSED_PARAMETER!>other<!> : Any?) : Boolean = true
 

compiler/testData/diagnostics/tests/extensions/ExtensionsCalledOnSuper.kt

@@ -6,12 +6,12 @@ interface T {
 
 fun T.bar() {}
 
-fun T.buzz() {}
+fun T.<!EXTENSION_SHADOWED_BY_MEMBER!>buzz<!>() {}
 fun T.buzz1() {}
 
 class C : T {
     fun test() {
-        fun T.buzz() {}
+        fun T.<!EXTENSION_SHADOWED_BY_MEMBER!>buzz<!>() {}
         fun T.buzz1() {}
         super.foo() // OK
         <!SUPER_CANT_BE_EXTENSION_RECEIVER!>super<!>.bar() // Error