Dynamic loader and virtual functions

[Chris Hennes]

Bjorn et. al,

Thanks for the input, and for the link. Unfortunately, binary 
compatibility does not seem to be the issue here. This problem appears 
even if I change the class to not inherit from anything. I add a virtual 
function in the header and poof! dlsym can't find the extern "C" function.

What's really strange is that this new class is being instantiated as a 
member of the main class for this plugin. In each plugin, this main 
class is derived from a plugin base class in the main application which 
contains virtual functions. The plugin class overrides these virtual 
function (successfully), and this has no effect on dlsym finding the 
LoadPlugin function. Why is this suddenly appearing when I add a new 
class with virtual functions to the .so???

Chris