No synthetic properties of type Unit

compiler/frontend.java/src/org/jetbrains/kotlin/synthetic/SyntheticExtensionsScope.kt

@@ -31,6 +31,7 @@ import org.jetbrains.kotlin.resolve.lazy.FileScopeProvider
 import org.jetbrains.kotlin.resolve.scopes.JetScope
 import org.jetbrains.kotlin.storage.StorageManager
 import org.jetbrains.kotlin.types.JetType
+import org.jetbrains.kotlin.types.typeUtil.isUnit
 import org.jetbrains.kotlin.types.typeUtil.makeNotNullable
 import org.jetbrains.kotlin.utils.addIfNotNull
 import java.util.*
@@ -69,6 +70,7 @@ class SyntheticExtensionsScope(storageManager: StorageManager) : JetScope by Jet
         return descriptor.getValueParameters().isEmpty()
                && descriptor.getTypeParameters().isEmpty()
                && descriptor.getVisibility() == Visibilities.PUBLIC //TODO: what about protected and package-local?
+               && !(descriptor.getReturnType()?.isUnit() ?: true)
     }
 
     private fun isGoodSetMethod(descriptor: FunctionDescriptor, propertyType: JetType): Boolean {

compiler/testData/diagnostics/tests/syntheticExtensions/FalseGetters.kt

@@ -3,12 +3,16 @@ fun foo(javaClass: JavaClass) {
     javaClass.<!UNRESOLVED_REFERENCE!>something1<!>
     javaClass.<!UNRESOLVED_REFERENCE!>something2<!>
     javaClass.<!UNRESOLVED_REFERENCE!>somethingStatic<!>
+    javaClass.<!UNRESOLVED_REFERENCE!>somethingVoid<!>
 }
 
 // FILE: JavaClass.java
 public class JavaClass {
     public int getSomething1(int p) { return p; }
+
     public <T> T getSomething2() { return null; }
 
     public static int getSomethingStatic() { return 1; }
-}
+
+    public void getSomethingVoid() { }
+}

compiler/testData/diagnostics/tests/syntheticExtensions/FalseGetters.txt

@@ -7,6 +7,7 @@ public open class JavaClass {
     public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
     public open fun getSomething1(/*0*/ p: kotlin.Int): kotlin.Int
     public open fun </*0*/ T> getSomething2(): T!
+    public open fun getSomethingVoid(): kotlin.Unit
     public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
     public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String