Hi all, I've been using Boost.Python to expose some instances of a class template to a python module. I ran into a problem with my class's method templates not being instantiated, leading to "undefined symbol" on import. Actually, this message from back in 2004 describes the problem exactly:
http://mail.python.org/pipermail/cplusplus-sig/2004-February/006586.html The advise is to move the method definitions into the header file, but I have some methods I want to ensure are not inlined, so I ended up using explicit template instantiations instead. Kind of a pain. The standard has this to say about function template instantiations: 14.7.1 Implicit instantiation 2. Unless a function template specialization has been explicitly instantiated or explicitly specialized, the function template specialization is implicitly instantiated when the specialization is referenced in a context that requires a function definition to exist. So my question is, why isn't taking the address of some instance of a templatized function and passing it to def() enough to require the function definition to exist? Should this be considered a usability bug in the library, a problem with my compiler, or maybe neither? I'm using gcc 4.4. Thanks, Kyle Cronan _______________________________________________ Cplusplus-sig mailing list Cplusplus-sig@python.org http://mail.python.org/mailman/listinfo/cplusplus-sig
