sldns_buffer_available
if(!sldns_buffer_available(buf, dname_len)) return 0;
if(!sldns_buffer_available(buf, 10)) return 0;
if(!sldns_buffer_available(buf,
if(!sldns_buffer_available(buf, len))
if(!sldns_buffer_available(buf, rdlen)) return 0;
if (sldns_buffer_available(c->buffer, 17) == 0) {
if(!sldns_buffer_available(buf, dname_len)) return 0;
if(!sldns_buffer_available(buf, 10)) return 0;
if(!sldns_buffer_available(buf,
if(!sldns_buffer_available(buf, len))
if(!sldns_buffer_available(buf, rdlen)) return 0;