Примеры ошибок, обнаруженных с помощью диагностики V3148

V3148. Casting potential 'null' value to a value type can lead to NullReferenceException.

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V3148 Casting potential 'null' value of 'toSet' to a value type can lead to NullReferenceException. Properties.cs 502

public static string ConstructFromString( .... )
{
  object toSet;
  bool isSerial = IsSerial( type );

  if ( isSerial ) // mutate into int32
    type = m_NumericTypes[4];

  ....
  else if ( value == null )
  {
    toSet = null;
  }
  ....

  if ( isSerial ) // mutate back
    toSet = (Serial)((Int32)toSet);

  constructed = toSet;
  return null;
}