wm_errorcb 1177 third_party/libevent/test/regress.c bev1 = bufferevent_new(pair[0], NULL, wm_writecb, wm_errorcb, NULL); wm_errorcb 1178 third_party/libevent/test/regress.c bev2 = bufferevent_new(pair[1], wm_readcb, NULL, wm_errorcb, NULL);