Sergey.Shanshin
441b22c0fd
Relates #KT-57647 If a serialization descriptor is used in the companion, then when accessing the child elements, an array of cached child serializers may be read. Since the serialization plugin adds its declarations to the class after the declarations from the source code, the initialization of the array of child serializers occurs after the execution of the user code. This can lead to N PE errors when trying to access an unfilled cached child serializer. The solution is to change the order of declarations so that the declaration with the property of cached child serializers comes first. Merge-request: KT-MR-10545 Merged-by: Sergey Shanshin <Sergey.Shanshin@jetbrains.com>
59 lines
1.4 KiB
Kotlin
Vendored
59 lines
1.4 KiB
Kotlin
Vendored
// TARGET_BACKEND: JVM_IR
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// WITH_STDLIB
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import kotlinx.serialization.*
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// Serializers for classes containing themselves as properties should be cached correctly
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@Serializable
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class Plain(val p: Plain? = null)
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@Serializable
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sealed class Sealed(val p: Sealed? = null)
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@Serializable
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open class Open(val p: Open? = null)
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@Serializable
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abstract class Abstract(val p: Abstract? = null)
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@Serializable
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class GenericHolder<T> {
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var value: T? = null
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}
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@Serializable
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sealed class SealedGeneric {
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var holder = GenericHolder<SealedGeneric>()
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}
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@Serializable
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sealed class SealedListGeneric {
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var holder = GenericHolder<GenericHolder<List<SealedListGeneric>>>()
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}
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@Serializable
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class AccessFromCompanion(@Contextual val category: Any) {
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companion object {
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init {
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serializer().descriptor.getElementDescriptor(0).isNullable
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}
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var isNullable = serializer().descriptor.getElementDescriptor(0).isNullable
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val isNullable2 = serializer<AccessFromCompanion>().descriptor.getElementDescriptor(0).isNullable
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}
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}
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fun box(): String {
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// A correctly cached class must be initialized correctly in order to exclude cyclic nesting of caches
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Plain.serializer()
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Sealed.serializer()
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Open.serializer()
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Abstract.serializer()
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SealedGeneric.serializer()
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SealedListGeneric.serializer()
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AccessFromCompanion("any")
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return "OK"
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}
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