Re: Wrong class export/visibility setting for shared libs in many Boost libs

From: Peter Dimov (pdimov_at_[hidden])
Date: 2021-02-02 14:57:47

Niall Douglas wrote:

> So, as I already said, don't do that. Only symbols whose typeinfos need to 
> be seen during RTTI lookup should always be BOOST_SYMBOL_VISIBLE. That is 
> generally types thrown as exceptions, and anything else subject to 
> dynamic_cast.

One problem here is that the library doesn't know which of its types are 
subject to dynamic_cast in user code.