RUBY_EVENT_C_CALL   71 vm_eval.c          EXEC_EVENT_HOOK(th, RUBY_EVENT_C_CALL, calling->recv, ci->mid, cc->me->owner, Qnil);
RUBY_EVENT_C_CALL  120 vm_eval.c          EXEC_EVENT_HOOK(th, RUBY_EVENT_C_CALL, recv, mid, me->owner, Qnil);
RUBY_EVENT_C_CALL 1631 vm_insnhelper.c     EXEC_EVENT_HOOK(th, RUBY_EVENT_C_CALL, recv, me->called_id, me->owner, Qundef);
RUBY_EVENT_C_CALL 1701 vm_insnhelper.c     EXEC_EVENT_HOOK(th, RUBY_EVENT_C_CALL, recv, me->called_id, me->owner, Qnil);
RUBY_EVENT_C_CALL  572 vm_trace.c           case RUBY_EVENT_C_CALL:	return "c-call";
RUBY_EVENT_C_CALL  688 vm_trace.c     	RUBY_EVENT_CALL | RUBY_EVENT_B_CALL | RUBY_EVENT_C_CALL;
RUBY_EVENT_C_CALL 1328 vm_trace.c     	  case RUBY_EVENT_C_CALL: