https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59937
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to Javier V. Gómez from comment #2) > I found another case that worked in G++ 4.8.3 but fails in 4.9: This example is complete nonsense. Why is it split across three files? Why doesn't main.cpp include anything? Why is everything private? Why is 'a' undeclared in B::foo()? Why does the diagnostic talk about 'ndims' which isn't declared anywhere? It's useless as a test or an example of the error.