Don't generate generic signature for get/set methods in property reference class

compiler/backend/src/org/jetbrains/kotlin/codegen/PropertyReferenceCodegen.kt

@@ -16,6 +16,7 @@
 
 package org.jetbrains.kotlin.codegen
 
+import org.jetbrains.kotlin.builtins.KotlinBuiltIns
 import org.jetbrains.kotlin.builtins.ReflectionTypes
 import org.jetbrains.kotlin.codegen.AsmUtil.method
 import org.jetbrains.kotlin.codegen.binding.CodegenBinding
@@ -31,10 +32,13 @@ import org.jetbrains.kotlin.psi.KtElement
 import org.jetbrains.kotlin.resolve.DescriptorFactory
 import org.jetbrains.kotlin.resolve.DescriptorUtils
 import org.jetbrains.kotlin.resolve.PropertyImportedFromObject
+import org.jetbrains.kotlin.resolve.descriptorUtil.builtIns
 import org.jetbrains.kotlin.resolve.descriptorUtil.getSuperClassNotAny
 import org.jetbrains.kotlin.resolve.jvm.AsmTypes.*
 import org.jetbrains.kotlin.resolve.jvm.diagnostics.JvmDeclarationOrigin
 import org.jetbrains.kotlin.resolve.jvm.jvmSignature.JvmMethodSignature
+import org.jetbrains.kotlin.types.*
+import org.jetbrains.kotlin.types.typeUtil.builtIns
 import org.jetbrains.kotlin.util.OperatorNameConventions
 import org.jetbrains.kotlin.utils.sure
 import org.jetbrains.org.objectweb.asm.Opcodes.*
@@ -172,6 +176,17 @@ class PropertyReferenceCodegen(
     }
 
     companion object {
+
+        @JvmField
+        val ANY_SUBSTITUTOR = TypeSubstitutor.create(object : TypeSubstitution() {
+            override fun get(key: KotlinType): TypeProjection? {
+                if (KotlinBuiltIns.isUnit(key)) {
+                    return TypeProjectionImpl(key)
+                }
+                return TypeProjectionImpl(key.builtIns.anyType)
+            }
+        })
+
         @JvmStatic
         fun generateCallableReferenceSignature(iv: InstructionAdapter, callable: CallableDescriptor, state: GenerationState) {
             val accessor = when (callable) {
@@ -208,7 +223,8 @@ class PropertyReferenceCodegen(
 
         @JvmStatic
         fun createFakeOpenDescriptor(getFunction: FunctionDescriptor, classDescriptor: ClassDescriptor): FunctionDescriptor {
-            return getFunction.original.copy(classDescriptor, Modality.OPEN, getFunction.visibility, getFunction.kind, false)
+            val copy = getFunction.original.copy(classDescriptor, Modality.OPEN, getFunction.visibility, getFunction.kind, false)
+            return copy.substitute(ANY_SUBSTITUTOR)
         }
 
         @JvmStatic