[Bug c++/51188] invalid static_cast from type 'XBase' to type 'int'

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51188

--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> 2011-11-17 
15:17:35 UTC ---
(In reply to comment #2)
> There is a strange thing here, if we reach 7 members in a class, things are
> done differently in the compiler.
> 
> Jason, I'd like to run the testsuite without this 7 member rule, how could I 
> do
> that ?

Look for "if (n_fields > 7)" in finish_struct_1.