68 typedef struct sigcontext mcontext_t;  typedef
74   mcontext_t uc_mcontext;
80 typedef struct sigcontext mcontext_t;  typedef
86   mcontext_t uc_mcontext;
111 } mcontext_t;  typedef
117   mcontext_t uc_mcontext;
128 } mcontext_t;  typedef
135   mcontext_t uc_mcontext;
146 } mcontext_t;  typedef
152   mcontext_t uc_mcontext;
371   mcontext_t& mcontext = ucontext->uc_mcontext;  in HandleProfilerSignal()