tls_buffer_data
if (!tls_buffer_data(s->s3->alert_fragment, &cbs))
if (!tls_buffer_data(s->s3->handshake_fragment, &cbs))
if (!tls_buffer_data(s->s3->handshake_fragment, &cbs))
if (!tls_buffer_data(s->s3->handshake_transcript, &cbs))
if (!tls_buffer_data(msg->buf, &cbs))
if (!tls_buffer_data(rec->buf, &cbs))
int tls_buffer_data(struct tls_buffer *buf, CBS *cbs);
if (!tls_buffer_data(buf, &cbs)) {