Describe the bug JSONDecoder throws an error when the value is decimal but the expected type is Int. In the final release of Swift 5, the error represents the situation correctly, but not in Swift ...

SwiftのJSONDecoder、型定義がIntのところに小数部のある数字が入ってくるとtype mismatchじゃなくてcorrupted dataとしてエラー投げるの何か間違ってないか？