The numberDecimal arm of Value::coerceToLong() ran assertValueInRangeLong against _storage.doubleValue. Because doubleValue aliases the RCDecimal pointer in the storage union, the check was effectively run against raw pointer bits, so out-of-range decimals silently slipped through to Decimal128::toLong() (which saturates without raising). This can lead to misleading downstream errors instead of throwing an error.