gcc/testsuite/g++.old-deja/g++.brendan/visibility6.C

// Build don't link: 
// GROUPS passed visibility
class bottom
{
public:
  int b; // ERROR - private
};
class middle : private bottom
{
public:
  void foo () { b; }
};
class top : public middle
{
public:
  void bar () { b; }// ERROR - .*
};