Re: [Boost-users] [Serialization] assertion failure on exit

Subject: Re: [Boost-users] [Serialization] assertion failure on exit
From: Kenny Riddile (kfriddile_at_[hidden])
Date: 2008-12-08 15:35:27

> Do you have the same problem if your destructor is not pure virtual?

Yes, it still asserts if the base class destructor is virtual rather 
than pure-virtual.

> As a side note, why is this destructor pure virtual, rather than just be 
> virtual? Are you trying to make your class not be instantiable directly, but 
> only be instantiable from a derived class? In that case, simply make your 
> constructors protected.

Yes, it is pure-virtual to prevent direct instantiation.  Adding a 
constructor definition and making it protected just seems like a more 
obfuscated, verbose way of achieving the same result.  It isn't even the 
same result either.  With the protected constructor method, someone 
could still add a friend later on which could instantiate a Serializable 
object directly.