test: clean up some minor warnings

test/ares-test-internal.cc

@@ -736,7 +736,7 @@ TEST_F(LibraryTest, DNSRecord) {
     ares__buf_append_str(printmsg, ares_dns_section_tostr((ares_dns_section_t)i));
     ares__buf_append_str(printmsg, " SECTION:\n");
     for (size_t j = 0; j < ares_dns_record_rr_cnt(dnsrec, (ares_dns_section_t)i); j++) {
-      const ares_dns_rr_t *rr = ares_dns_record_rr_get(dnsrec, (ares_dns_section_t)i, j);
+      rr = ares_dns_record_rr_get(dnsrec, (ares_dns_section_t)i, j);
       ares__buf_append_str(printmsg, ares_dns_rr_get_name(rr));
       ares__buf_append_str(printmsg, ".\t\t\t");
       ares__buf_append_str(printmsg, ares_dns_class_tostr(ares_dns_rr_get_class(rr)));

test/ares-test-mock-et.cc

@@ -142,6 +142,7 @@ TEST_P(MockUDPEventThreadTest, TruncationRetry) {
 static int sock_cb_count = 0;
 static int SocketConnectCallback(ares_socket_t fd, int type, void *data) {
   int rc = *(int*)data;
+  (void)type;
   if (verbose) std::cerr << "SocketConnectCallback(" << fd << ") invoked" << std::endl;
   sock_cb_count++;
   return rc;

test/ares-test.cc

@@ -600,7 +600,7 @@ void MockServer::ProcessFD(ares_socket_t fd) {
   }
   if (fd == tcpfd_) {
     ares_socket_t connfd = accept(tcpfd_, NULL, NULL);
-    if (connfd < 0) {
+    if (connfd == ARES_SOCKET_BAD) {
       std::cerr << "Error accepting connection on fd " << fd << std::endl;
     } else {
       connfds_.insert(connfd);
@@ -1034,7 +1034,10 @@ std::ostream& operator<<(std::ostream& os, const AddrInfo& ai) {
     if(next_cname->name) {
       os << next_cname->name;
     }
-    if((next_cname = next_cname->next))
+
+    next_cname = next_cname->next;
+
+    if (next_cname != NULL)
       os << ", ";
     else
       os << " ";
@@ -1063,7 +1066,8 @@ std::ostream& operator<<(std::ostream& os, const AddrInfo& ai) {
       os << ":" << port;
     }
     os << "]";
-    if((next = next->ai_next))
+    next = next->ai_next;
+    if (next != NULL)
       os << ", ";
   }
   os << '}';