CALLER_BINDING_CFP 1115 vm_backtrace.c     rb_ary_store(frame, CALLER_BINDING_CFP, GC_GUARDED_PTR(cfp));
CALLER_BINDING_CFP 1130 vm_backtrace.c     rb_ary_store(frame, CALLER_BINDING_CFP, GC_GUARDED_PTR(cfp));