RaiseError

pub const UnexpectedError = error{
    /// The Operating System returned an undocumented error code.
    ///
    /// This error is in theory not possible, but it would be better
    /// to handle this error than to invoke undefined behavior.
    ///
    /// When this error code is observed, it usually means the Zig Standard
    /// Library needs a small patch to add the error code to the error set for
    /// the respective function.
    Unexpected,
}