Re: [Boost-users] [Logging] Issues with dlls

From: Martin Ecker (martin.ecker_at_[hidden])
Date: 2005-09-07 11:44:21

Hi,

Paolo Coletta wrote:
> Is this expected to work? I made some tests and I got an access 
> violation when exiting the main app, in the destructor of 
> default_log_manager_impl(). (I can send a simple test case if needed).

With the current implementation this won't work. The problem is that 
the log instances do not unregister themselves from the log manager 
upon destruction. So when the Boost Logging DLL gets unloaded it will 
try to call a virtual destructor on all registered log instances, but 
the corresponding vtable pointers could already be invalid if the DLL 
that contains the logs has already been unloaded.

I've already reported this problem to John. The fix for this is easy, 
you have to unregister logs when they are destroyed, i.e. in their 
destructor, from the log manager.

Best Regards,
Martin