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