check definite return in local functions

compiler/testData/codegen/box/extensionFunctions/kt4118.kt

@@ -12,7 +12,7 @@ fun Array<String>.test1Nested(): Array<String> {
 fun Array<String>.test2() : Array<String> {
     class Z2() {
         fun run(): Array<String> {
-            this@test2
+            return this@test2
         }
     }
     return Z2().run()
@@ -34,7 +34,7 @@ fun Array<String>.test2Nested() : Array<String> {
 
 fun Array<String>.test3(): Array<String> {
     fun local(): Array<String> {
-        this@test3
+        return this@test3
     }
     return local()
 }
@@ -42,7 +42,7 @@ fun Array<String>.test3(): Array<String> {
 fun Array<String>.test3Nested(): Array<String> {
     fun local(): Array<String> {
         fun local2(): Array<String> {
-            this@test3Nested
+            return this@test3Nested
         }
         return local2()
     }

compiler/testData/codegen/box/functions/kt1038.kt

@@ -39,7 +39,7 @@ fun<TItem> Iterable<TItem>.where(predicate : (TItem)->Boolean) : Iterable<TItem>
                         if (predicate(next))
                             return next
                     }
-                    null
+                    return null
                 }
                     { yielder() }
             }

compiler/testData/diagnostics/tests/controlFlowAnalysis/definiteReturn/ReturnFromFunctionInObject.kt

@@ -0,0 +1,13 @@
+trait X {
+    fun f(): Boolean
+}
+
+val m = object : X {
+    override fun f(): Boolean {
+    <!NO_RETURN_IN_FUNCTION_WITH_BLOCK_BODY!>}<!>
+
+    fun foo() {
+        fun local(): Int {
+        <!NO_RETURN_IN_FUNCTION_WITH_BLOCK_BODY!>}<!>
+    }
+}

compiler/testData/diagnostics/tests/controlFlowAnalysis/definiteReturn/kt3444_ReturnFromLocalFunctions.kt

@@ -0,0 +1,17 @@
+package f
+
+
+//KT-3444 Front-end doesn't check if local function or function of anonymous class returns value
+
+fun box(): Int {
+
+    fun local(): Int {
+    <!NO_RETURN_IN_FUNCTION_WITH_BLOCK_BODY!>}<!>
+
+    return local()
+}
+
+fun main(args: Array<String>) {
+    box()
+}
+