old_ecf           993 event/ngx_event.c     ngx_event_conf_t     *old_ecf;
old_ecf          1003 event/ngx_event.c         old_ecf = ngx_event_get_conf(cf->cycle->old_cycle->conf_ctx,
old_ecf          1006 event/ngx_event.c         old_ecf = NULL;
old_ecf          1022 event/ngx_event.c                     && old_ecf
old_ecf          1023 event/ngx_event.c                     && old_ecf->use != ecf->use)
old_ecf          1032 event/ngx_event.c                                &value[1], old_ecf->name);