Exception when writing a JSON column with negative enum value

[MoryakSPb]

When EF try writing a JSON document that contains negative enum value, an System.OverflowException is thrown.

Test project: https://github.com/MoryakSPb/EfEnumJson

Stack trace:

System.OverflowException: Value was either too large or too small for a UInt64.
   at System.Convert.ThrowUInt64OverflowException()
   at System.Int32.System.IConvertible.ToUInt64(IFormatProvider provider)
   at System.Convert.ChangeType(Object value, Type conversionType, IFormatProvider provider)
   at Microsoft.EntityFrameworkCore.Storage.Json.JsonWarningEnumReaderWriter`1.ToJsonTyped(Utf8JsonWriter writer, TEnum value)
   at Microsoft.EntityFrameworkCore.Storage.Json.JsonValueReaderWriter`1.ToJson(Utf8JsonWriter writer, Object value)
   at Microsoft.EntityFrameworkCore.Update.ModificationCommand.WriteJson(Utf8JsonWriter writer, Object navigationValue, IUpdateEntry parentEntry, IEntityType entityType, Nullable`1 ordinal, Boolean isCollection, Boolean isTopLevel)
   at Microsoft.EntityFrameworkCore.Update.ModificationCommand.<GenerateColumnModifications>g__HandleJson|41_4(List`1 columnModifications, <>c__DisplayClass41_0&)
   at Microsoft.EntityFrameworkCore.Update.ModificationCommand.GenerateColumnModifications()
   at Microsoft.EntityFrameworkCore.Update.ModificationCommand.<>c.<get_ColumnModifications>b__33_0(ModificationCommand command)
   at Microsoft.EntityFrameworkCore.Internal.NonCapturingLazyInitializer.EnsureInitialized[TParam,TValue](TValue& target, TParam param, Func`2 valueFactory)
   at Microsoft.EntityFrameworkCore.Update.ModificationCommand.get_ColumnModifications()
   at Microsoft.EntityFrameworkCore.Update.UpdateSqlGenerator.AppendInsertReturningOperation(StringBuilder commandStringBuilder, IReadOnlyModificationCommand command, Int32 commandPosition, Boolean& requiresTransaction)
   at Microsoft.EntityFrameworkCore.Sqlite.Update.Internal.SqliteUpdateSqlGenerator.AppendInsertOperation(StringBuilder commandStringBuilder, IReadOnlyModificationCommand command, Int32 commandPosition, Boolean& requiresTransaction)
   at Microsoft.EntityFrameworkCore.Update.ReaderModificationCommandBatch.AddCommand(IReadOnlyModificationCommand modificationCommand)
   at Microsoft.EntityFrameworkCore.Update.ReaderModificationCommandBatch.TryAddCommand(IReadOnlyModificationCommand modificationCommand)
   at Microsoft.EntityFrameworkCore.Update.Internal.CommandBatchPreparer.CreateCommandBatches(IEnumerable`1 commandSet, Boolean moreCommandSets, Boolean assertColumnModification, ParameterNameGenerator parameterNameGenerator)+MoveNext()
   at Microsoft.EntityFrameworkCore.Update.Internal.CommandBatchPreparer.BatchCommands(IList`1 entries, IUpdateAdapter updateAdapter)+MoveNext()
   at Microsoft.EntityFrameworkCore.Update.Internal.BatchExecutor.ExecuteAsync(IEnumerable`1 commandBatches, IRelationalConnection connection, CancellationToken cancellationToken)
   at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.SaveChangesAsync(IList`1 entriesToSave, CancellationToken cancellationToken)
   at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.SaveChangesAsync(StateManager stateManager, Boolean acceptAllChangesOnSuccess, CancellationToken cancellationToken)
   at Microsoft.EntityFrameworkCore.DbContext.SaveChangesAsync(Boolean acceptAllChangesOnSuccess, CancellationToken cancellationToken)
   at Microsoft.EntityFrameworkCore.DbContext.SaveChangesAsync(Boolean acceptAllChangesOnSuccess, CancellationToken cancellationToken)
   at EfEnumJson.Tests.EnumTests.EnumToJson(MyEnum value) in I:\SourceCodes\EfEnumJson\EfEnumJson.Tests\EnumTest.cs:line 36

Provider and version information

EF Core version: 8.0.0

Database provider: Microsoft.EntityFrameworkCore.Sqlite
(actual for Npgsql.EntityFrameworkCore.PostgreSQL also)

Target framework: .NET 8.0.0

Operating system: Windows 11 22H2 (22621.2861)

IDE: Visual Studio 2022 17.8.3

[roji]

/cc @ajcvickers