Fix Kotlin user projects build (#2341)

* Remove @SharedImmutable usages

The annotation is deprecated and has no effect.

* Suppress animal sniffer error in a data class with boolean property

The error is a result of changes in data class hashCode generation.
The generated code now uses the static Boolean.hashCode() to calculate hash code of boolean properties. The static function is available only since Java 1.8.

Author: qurbonzoda

build.gradle

@@ -204,6 +204,8 @@ subprojects {
                 case "kotlinx-serialization-hocon":
                     annotationValue = "kotlinx.serialization.hocon.internal.SuppressAnimalSniffer"
                     break
+                case "kotlinx-serialization-protobuf":
+                    annotationValue = "kotlinx.serialization.protobuf.internal.SuppressAnimalSniffer"
             }
             annotation = annotationValue
         }

core/commonMain/src/kotlinx/serialization/internal/Platform.common.kt

@@ -65,7 +65,6 @@ internal fun SerialDescriptor.cachedSerialNames(): Set<String> {
     return result
 }
 
-@SharedImmutable
 private val EMPTY_DESCRIPTOR_ARRAY: Array<SerialDescriptor> = arrayOf()
 
 /**

core/commonMain/src/kotlinx/serialization/internal/PluginHelperInterfaces.kt

@@ -8,7 +8,6 @@ import kotlinx.serialization.*
 import kotlin.jvm.*
 import kotlin.native.concurrent.*
 
-@SharedImmutable
 @JvmField
 internal val EMPTY_SERIALIZER_ARRAY: Array<KSerializer<*>> = arrayOf()
 

core/commonMain/src/kotlinx/serialization/internal/Primitives.kt

@@ -16,7 +16,6 @@ import kotlin.reflect.*
 import kotlin.time.Duration
 
 @OptIn(ExperimentalUnsignedTypes::class)
-@SharedImmutable
 private val BUILTIN_SERIALIZERS = mapOf(
     String::class to String.serializer(),
     Char::class to Char.serializer(),

core/commonMain/src/kotlinx/serialization/internal/Tuples.kt

@@ -11,7 +11,6 @@ import kotlinx.serialization.descriptors.*
 import kotlinx.serialization.encoding.*
 import kotlin.native.concurrent.*
 
-@SharedImmutable
 private val NULL = Any()
 private const val deprecationMessage =
     "This class is used only by the plugin in generated code and should not be used directly. Use corresponding factory functions instead"

core/commonMain/src/kotlinx/serialization/modules/SerializersModule.kt

@@ -73,7 +73,6 @@ public sealed class SerializersModule {
 /**
  * A [SerializersModule] which is empty and always returns `null`.
  */
-@SharedImmutable
 @Deprecated("Deprecated in the favour of 'EmptySerializersModule()'",
     level = DeprecationLevel.WARNING,
     replaceWith = ReplaceWith("EmptySerializersModule()"))

core/commonTest/src/kotlinx/serialization/PolymorphismTestData.kt

@@ -30,7 +30,6 @@ open class PolyBase(val id: Int) {
 @Serializable
 data class PolyDerived(val s: String) : PolyBase(1)
 
-@SharedImmutable
 val BaseAndDerivedModule = SerializersModule {
     polymorphic(PolyBase::class, PolyBase.serializer()) {
         subclass(PolyDerived.serializer())

core/commonTest/src/kotlinx/serialization/UmbrellaTypes.kt

@@ -67,7 +67,6 @@ data class ArraysUmbrella(
             arrIntData.contentEquals(other.arrIntData)
 }
 
-@SharedImmutable
 val umbrellaInstance = TypesUmbrella(
     Unit, true, 10, 20, 30, 40, 50.1f, 60.1, 'A', "Str0", Attitude.POSITIVE, IntData(70),
     null, null, 11, 21, 31, 41, 51.1f, 61.1, 'B', "Str1", Attitude.NEUTRAL, null,

core/nativeTest/src/kotlinx/serialization/test/CurrentPlatform.kt

@@ -5,7 +5,5 @@
 package kotlinx.serialization.test
 
 import kotlinx.serialization.test.Platform
-import kotlin.native.concurrent.SharedImmutable
 
-@SharedImmutable
 public actual val currentPlatform: Platform = Platform.NATIVE

formats/cbor/commonTest/src/kotlinx/serialization/PolymorphismTestData.kt

@@ -19,7 +19,6 @@ data class SimpleStringInheritor(val s: String, val i: Int) : SimpleAbstract()
 @Serializable
 data class PolyBox(@Polymorphic val boxed: SimpleAbstract)
 
-@SharedImmutable
 val SimplePolymorphicModule = SerializersModule {
     polymorphic(SimpleAbstract::class) {
         subclass(SimpleIntInheritor.serializer())