[Bug c++/57752] during the lookup for a base class name, non-type names should be ignored

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57752

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
There's a cross-reference to [basic.scope.hiding] which explains how a class
name can be hidden by variables, members and enumerators, and it seems that
both G++ and clang interpret [class.derived]/2 to mean only that type of name
hiding is ignored, e.g. the variable x is ignored here:

struct x
{};

namespace
{
    int x = 0;
    struct y : x
    {};
}