1// RUN: %clang_cc1 -emit-llvm %s -o -
2// PR954
3
4struct _Refcount_Base   {
5  unsigned long _M_ref_count;
6  int _M_ref_count_lock;
7  _Refcount_Base() : _M_ref_count(0) {}
8};
9
10struct _Rope_RopeRep : public _Refcount_Base
11{
12public:
13  int _M_tag:8;
14};
15
16int foo(_Rope_RopeRep* r) { return r->_M_tag; }
17