test/SemaCXX/crash-8124080.cpp

// RUN: %clang_cc1 -fsyntax-only -verify %s

// <rdar://problem/8124080>
template<typename _Alloc> class allocator;
template<class _CharT> struct char_traits;
template<typename _CharT, typename _Traits = char_traits<_CharT>,            
         typename _Alloc = allocator<_CharT> >
class basic_string;
template<typename _CharT, typename _Traits, typename _Alloc>
const typename basic_string<_CharT, _Traits, _Alloc>::size_type   
basic_string<_CharT, _Traits, _Alloc>::_Rep::_S_max_size // expected-error{{no member named '_Rep' in 'basic_string<_CharT, _Traits, _Alloc>'}}
  = (((npos - sizeof(_Rep_base))/sizeof(_CharT)) - 1) / 4; 

// PR7118
template<typename T>
class Foo {
  class Bar;
  void f() {
    Bar i;
  }
};