[GiNaC-list] Problem using a user-defined class on Mac OS X.

[Chris.Dams at mi.infn.it]

Dear all,

I seem to be having a problem with unarchiving a user-defined class on Mac
OS X. The problem is that the static member
class_info<registered_class_options>::first is (besides inside the GiNaC
dynamic library) also created within my executable. This second version is
then used when registering my own class, so that my own class does not
appear in the linked list of which
*(class_info<registered_class_options>::first) is the first element. I
debugged this by printing both the address of first and the name of the
class being registered from the constructor of class_info and the for my
own class the address of first turned out to be different. The consequence
of this is that members of my own class cannot be unarchived. The problem
does not occur on Linux. Anyone any bright ideas? Should this be
considered a bug GiNaC? Does anyone know a combination of linker flags
that can prevent this?

Best wishes,
Chris