llvm-6502/test/C++Frontend/2006-10-30-ClassBitfield.cpp

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// RUN: %llvmgxx %s -emit-llvm -S -o -
// PR954
struct _Refcount_Base {
unsigned long _M_ref_count;
int _M_ref_count_lock;
_Refcount_Base() : _M_ref_count(0) {}
};
struct _Rope_RopeRep : public _Refcount_Base
{
public:
int _M_tag:8;
};
int foo(_Rope_RopeRep* r) { return r->_M_tag; }