Can unnamed structures inherit?

Question

The following looks like a compilation error :

struct : Base { };

Yet when used ^[1] it seems to work :

#include <         


        

Answer 1

Your first example, because it doesn't declare anything, shows an attempt at an anonymous struct (which is not allowed - 7/3) rather than an unnamed one (which is).

The grammar in 9/1 of the C++11 standard seems to allow an unnamed class to have a base, so I think your second example is fine.