Crash in FMovieSceneNumericVariant::Set when loading a Level Sequence with Custom Time Warp on Android

On Android, loading a Level Sequence fatals in the async loading thread:

Assertion failed: (NewValue & ~PAYLOAD_Bits) == 0

MovieSceneNumericVariant.cpp:133

Unable to store a pointer outside of a 48 bit address space in this container

This fires while serializing a UMovieSceneSection whose Time Warp type is Custom (Play Rate Curve / Time Warp Curve). Windows does not hit this.

#00 pc 00000000000898cc /apex/com.android.runtime/lib64/bionic/libc.so (abort+160) [arm64-v8a]
#01 pc 000000000dc0bf40 libUnreal.so FAndroidErrorOutputDevice::Serialize(char16_t const*, ELogVerbosity::Type, FName const&) (D:/data/workspace/nf_common_03/engine_proj/Engine/Source/Runtime/Core/Private/Android/AndroidErrorOutputDevice.cpp:52:4) [arm64-v8a]
#02 pc 000000000e108660 libUnreal.so FOutputDevice::LogfImpl(char16_t const*, ...) (D:/data/workspace/nf_common_03/engine_proj/Engine/Source/Runtime/Core/Private/Misc/OutputDevice.cpp:81)([Inline]bool GrowableLogfV(char16_t const*, std::__va_list, FOutputDevice::LogfImpl(char16_t const*, ...)::$_0 const&) (D:/data/workspace/nf_common_03/engine_proj/Engine/Source/Runtime/Core/Private/Misc/VarargsHelper.h:47))([Inline]FOutputDevice::LogfImpl(char16_t const*, ...)::$_0::operator()(char16_t*) const (D:/data/workspace/nf_common_03/engine_proj/Engine/Source/Runtime/Core/Private/Misc/OutputDevice.cpp:81:2)) [arm64-v8a]
#03 pc 000000000e02c924 libUnreal.so FDebug::CheckVerifyFailedImpl2V(char const*, char const*, int, char16_t const*, std::_va_list) (D:/data/workspace/nf_common_03/engine_proj/Engine/Source/Runtime/Core/Private/Misc/AssertionMacros.cpp:726)([Inline]AssertFailedImplV(char const*, char const*, int, void*, char16_t const*, std::_va_list) (D:/data/workspace/nf_common_03/engine_proj/Engine/Source/Runtime/Core/Private/Misc/AssertionMacros.cpp:175))([Inline]void FOutputDevice::Logf(char16_t const (&) [49], char const*, char const*, int, char16_t*) (D:/data/workspace/nf_common_03/engine_proj/Engine/Source/Runtime/Core/Public/Misc/OutputDevice.h:246:3)) [arm64-v8a]
#04 pc 000000000e0261a8 libUnreal.so FDebug::CheckVerifyFailedImpl2(char const*, char const*, int, char16_t const*, ...) (D:/data/workspace/nf_common_03/engine_proj/Engine/Source/Runtime/Core/Private/Misc/AssertionMacros.cpp:747:17) [arm64-v8a]
#05 pc 0000000012b80790 libUnreal.so UE::Core::Private::Function::TFunctionRefCaller::Call(void*, FArchive&, unsigned char&, void*&) (D:/data/workspace/nf_common_03/engine_proj/Engine/Source/Runtime/Core/Public/Templates/Function.h:292)([Inline]decltype((FMovieSceneTimeWarpVariant::Serialize(FArchive&)::$_0&)(fp)((FArchive&)(fp0), (unsigned char&)(fp0), (void*)(fp0))) Invoke(FMovieSceneTimeWarpVariant::Serialize(FArchive&)::$_0&, FArchive&, unsigned char&, void*&&) (D:/data/workspace/nf_common_03/engine_proj/Engine/Source/Runtime/Core/Public/Templates/Invoke.h:47))([Inline]FMovieSceneTimeWarpVariant::Serialize(FArchive&)::$_0::operator()(FArchive&, unsigned char&, void*) const (D:/data/workspace/nf_common_03/engine_proj/Engine/Source/Runtime/MovieScene/Private/Variants/MovieSceneTimeWarpVariant.cpp:233))([Inline]FMovieSceneNumericVariant::Set(UMovieSceneNumericVariantGetter*) (D:/data/workspace/nf_common_03/engine_proj/Engine/Source/Runtime/MovieScene/Private/Variants/MovieSceneNumericVariant.cpp:133:2)) [arm64-v8a]
#06 pc 0000000012b54498 libUnreal.so FMovieSceneNumericVariant::SerializeCustom(FArchive&, TFunctionRef) (D:/data/workspace/nf_common_03/engine_proj/Engine/Source/Runtime/MovieScene/Private/Variants/MovieSceneNumericVariant.cpp:289)([Inline]UE::Core::Private::Function::TFunctionRefBase::operator()(FArchive&, unsigned char&, void*) const (D:/data/workspace/nf_common_03/engine_proj/Engine/Source/Runtime/Core/Public/Templates/Function.h:414:11)) [arm64-v8a]
#07 pc 0000000012b659b8 libUnreal.so _ZN2UE11CoreUObject7Private16SerializeArchiveI26FMovieSceneTimeWarpVariantQntntsr20TStructOpsTypeTraitsIT_EE14WithSerializerEEbR8FArchivePvP7UStructPKv (D:/data/workspace/nf_common_03/engine_proj/Engine/Source/Runtime/CoreUObject/Public/UObject/Class.h:1280)([Inline]FMovieSceneTimeWarpVariant::Serialize(FArchive&) (D:/data/workspace/nf_common_03/engine_proj/Engine/Source/Runtime/MovieScene/Private/Variants/MovieSceneTimeWarpVariant.cpp:214:17)) [arm64-v8a]
#08 pc 000000000e79d660 libUnreal.so UScriptStruct::SerializeItem(FStructuredArchiveSlot, void*, void const*) (D:/data/workspace/nf_common_03/engine_proj/Engine/Source/Runtime/CoreUObject/Private/UObject/Class.cpp:3427)([Inline]UScriptStruct::ICppStructOps::Serialize(FArchive&, void*, UStruct*, void const*) (D:/data/workspace/nf_common_03/engine_proj/Engine/Source/Runtime/CoreUObject/Public/UObject/Class.h:1826:11)) [arm64-v8a]
#09 pc 000000000ea487c0 libUnreal.so FStructProperty::SerializeItem(FStructuredArchiveSlot, void*, void const*) const (D:/data/workspace/nf_common_03/engine_proj/Engine/Source/Runtime/CoreUObject/Private/UObject/PropertyStruct.cpp:183:10) [arm64-v8a]
#10 pc 000000000e7981a0 libUnreal.so SerializeUnversionedProperties(UStruct const*, FStructuredArchiveSlot, unsigned char*, UStruct const*, unsigned char const*) (D:/data/workspace/nf_common_03/engine_proj/Engine/Source/Runtime/CoreUObject/Private/Serialization/UnversionedPropertySerialization.cpp:1024)([Inline]FUnversionedPropertySerializer::Serialize(FStructuredArchiveSlot, unsigned char*, FDefaultStruct) const (D:/data/workspace/nf_common_03/engine_proj/Engine/Source/Runtime/CoreUObject/Private/Serialization/UnversionedPropertySerialization.cpp:126:14)) [arm64-v8a]
#11 pc 000000000e7bb1d0 libUnreal.so UStruct::SerializeTaggedProperties(FStructuredArchiveSlot, unsigned char*, UStruct const*, unsigned char const*, UObject const*) const (D:/data/workspace/nf_common_03/engine_proj/Engine/Source/Runtime/CoreUObject/Private/UObject/Class.cpp:1530:3) [arm64-v8a]
#12 pc 000000000e79d6e8 libUnreal.so UScriptStruct::SerializeItem(FStructuredArchiveSlot, void*, void const*) (D:/data/workspace/nf_common_03/engine_proj/Engine/Source/Runtime/CoreUObject/Private/UObject/Class.cpp:3453:4) [arm64-v8a]
#13 pc 000000000ea487c0 libUnreal.so FStructProperty::SerializeItem(FStructuredArchiveSlot, void*, void const*) const (D:/data/workspace/nf_common_03/engine_proj/Engine/Source/Runtime/CoreUObject/Private/UObject/PropertyStruct.cpp:183:10) [arm64-v8a]
#14 pc 000000000e7981a0 libUnreal.so SerializeUnversionedProperties(UStruct const*, FStructuredArchiveSlot, unsigned char*, UStruct const*, unsigned char const*) (D:/data/workspace/nf_common_03/engine_proj/Engine/Source/Runtime/CoreUObject/Private/Serialization/UnversionedPropertySerialization.cpp:1024)([Inline]FUnversionedPropertySerializer::Serialize(FStructuredArchiveSlot, unsigned char*, FDefaultStruct) const (D:/data/workspace/nf_common_03/engine_proj/Engine/Source/Runtime/CoreUObject/Private/Serialization/UnversionedPropertySerialization.cpp:126:14)) [arm64-v8a]
#15 pc 000000000e7bb1d0 libUnreal.so UStruct::SerializeTaggedProperties(FStructuredArchiveSlot, unsigned char*, UStruct const*, unsigned char const*, UObject const*) const (D:/data/workspace/nf_common_03/engine_proj/Engine/Source/Runtime/CoreUObject/Private/UObject/Class.cpp:1530:3) [arm64-v8a]
#16 pc 000000000e988960 libUnreal.so UObject::SerializeScriptProperties(FStructuredArchiveSlot) const (D:/data/workspace/nf_common_03/engine_proj/Engine/Source/Runtime/CoreUObject/Private/UObject/Obj.cpp:2021:13) [arm64-v8a]
#17 pc 000000000e988760 libUnreal.so UObject::Serialize(FStructuredArchiveRecord) (D:/data/workspace/nf_common_03/engine_proj/Engine/Source/Runtime/CoreUObject/Private/UObject/Obj.cpp:1784:4) [arm64-v8a]
#18 pc 000000000e97c3fc libUnreal.so UObject::Serialize(FArchive&) (D:/data/workspace/nf_common_03/engine_proj/Engine/Source/Runtime/CoreUObject/Private/UObject/Obj.cpp:1644:1) [arm64-v8a]
#19 pc 000000001294e6ac libUnreal.so UMovieSceneDecorationContainerObject::Serialize(FArchive&) (D:/data/workspace/nf_common_03/engine_proj/Engine/Source/Runtime/MovieScene/Private/Decorations/MovieSceneDecorationContainer.cpp:80:9) [arm64-v8a]
#20 pc 0000000012ac224c libUnreal.so UMovieSceneSection::Serialize(FArchive&) (D:/data/workspace/nf_common_03/engine_proj/Engine/Source/Runtime/MovieScene/Private/MovieSceneSection.cpp:103:9) [arm64-v8a]
#21 pc 000000000ec02d80 libUnreal.so FAsyncPackage2::EventDrivenSerializeExport(FAsyncPackageHeaderData const&, int, FExportArchive*) (D:/data/workspace/nf_common_03/engine_proj/Engine/Source/Runtime/CoreUObject/Private/Serialization/AsyncLoading2.cpp:8860:11) [arm64-v8a]
#22 pc 000000000ebffcc8 libUnreal.so FAsyncPackage2::Event_ProcessExportBundle(FAsyncLoadingThreadState2&, FAsyncPackage2*, int) (D:/data/workspace/nf_common_03/engine_proj/Engine/Source/Runtime/CoreUObject/Private/Serialization/AsyncLoading2.cpp:7989:16) [arm64-v8a]
#23 pc 000000000ebf2358 libUnreal.so FEventLoadNode2::Execute(FAsyncLoadingThreadState2&) (D:/data/workspace/nf_common_03/engine_proj/Engine/Source/Runtime/CoreUObject/Private/Serialization/AsyncLoading2.cpp:5981:12) [arm64-v8a]
#24 pc 000000000ebf3704 libUnreal.so FAsyncLoadEventQueue2::ExecuteSyncLoadEvents(FAsyncLoadingThreadState2&) (D:/data/workspace/nf_common_03/engine_proj/Engine/Source/Runtime/CoreUObject/Private/Serialization/AsyncLoading2.cpp:6187:48) [arm64-v8a]
#25 pc 000000000ec118b4 libUnreal.so FAsyncLoadingThread2::Run() (D:/data/workspace/nf_common_03/engine_proj/Engine/Source/Runtime/CoreUObject/Private/Serialization/AsyncLoading2.cpp:10499:24) [arm64-v8a]
#26 pc 000000000deda2e4 libUnreal.so FRunnableThreadPThread::Run() (D:/data/workspace/nf_common_03/engine_proj/Engine/Source/Runtime/Core/Private/HAL/PThreadRunnableThread.cpp:25:24) [arm64-v8a]
#27 pc 000000000dc4d2d4 libUnreal.so FRunnableThreadPThread::_ThreadProc(void*) (D:/data/workspace/nf_common_03/engine_proj/Engine/Source/Runtime/Core/Private/HAL/PThreadRunnableThread.h:187:15) [arm64-v8a]
#28 pc 000000000009a22c /apex/com.android.runtime/lib64/bionic/libc.so [arm64-v8a]
#29 pc 000000000008ca48 /apex/com.android.runtime/lib64/bionic/libc.so [arm64-v8a]
java: