xiaoxiang781216 commented on a change in pull request #3889:
URL: https://github.com/apache/incubator-nuttx/pull/3889#discussion_r648863070
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File path: libs/libc/netdb/lib_dnsquery.c
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@@ -439,8 +440,11 @@ static int dns_recv_response(int sd, FAR union dns_addr_u
*addr, int naddr,
ninfo("Question: type=%04x, class=%04x\n",
ntohs(que->type), ntohs(que->class));
- if (que->type != qinfo->rectype ||
- que->class != HTONS(DNS_CLASS_IN))
+ /* N.B. Unaligned access may occur here */
+
+ temp = HTONS(DNS_CLASS_IN);
+ if (memcmp(&que->type, &qinfo->rectype, sizeof(uint16_t)) != 0 ||
Review comment:
Ok, but line 440-441 need be removed too.
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