Bug in dns.c?

Question

My compiler reports W5500/Internet/DNS/dns.c:342:25: warning: argument to ‘sizeof’ in ‘memset’ call is the same expression as the destination; did you mean to dereference it? [-Wsizeof-pointer-memaccess] The code it refers to: /* * PARSE THE DNS REPLY * * Description : This function parses the reply message from DNS server. * Arguments : dhdr - is a pointer to the header for DNS message * buf - is a pointer to the reply message. * len - is the size of reply message. * Returns : -1 - Domain name lenght is too big * 0 - Fail (Timout or parse error) * 1 - Success, */ int8_t parseDNSMSG(struct dhdr * pdhdr, uint8_t * pbuf, uint8_t * ip_from_dns) { uint16_t tmp; uint16_t i; uint8_t * msg; uint8_t * cp; msg = pbuf; memset(pdhdr, 0, sizeof(pdhdr)); Should it be like this? memset(pdhdr, 0, sizeof(dhdr));

Ricky · Answer

hi. the difference between “memset(pdhdr, 0, sizeof(dhdr));” and “memset(pdhdr, 0, sizeof(pdhdr));”, there is almost no effect on the system. but, we will check that and modified.