Replace IsNT with IS_NT().

Return correct timeval in windows_port.c.
Squelch gcc warnings:
  use 'ares_socket_t' in ares_fds.c.
  Don't cast a 'lvalue' in ares_init.c.

ares/ares_fds.c

@@ -26,7 +26,8 @@
 int ares_fds(ares_channel channel, fd_set *read_fds, fd_set *write_fds)
 {
   struct server_state *server;
-  int i, nfds;
+  ares_socket_t nfds;
+  int i;
 
   /* No queries, no file descriptors. */
   if (!channel->queries)
@@ -51,5 +52,5 @@ int ares_fds(ares_channel channel, fd_set *read_fds, fd_set *write_fds)
 	    nfds = server->tcp_socket + 1;
 	}
     }
-  return nfds;
+  return (int)nfds;
 }

ares/ares_gethostbyaddr.c

@@ -149,7 +149,7 @@ static int file_lookup(struct in_addr *addr, struct hostent **host)
 #ifdef WIN32
 
   char PATH_HOSTS[MAX_PATH];
-  if (IsNT) {
+  if (IS_NT()) {
 	char tmp[MAX_PATH];
 	HKEY hkeyHosts;
 

ares/ares_gethostbyname.c

@@ -221,7 +221,7 @@ static int file_lookup(const char *name, struct hostent **host)
 
 #ifdef WIN32
   char PATH_HOSTS[MAX_PATH];
-  if (IsNT) {
+  if (IS_NT()) {
 	char tmp[MAX_PATH];
 	HKEY hkeyHosts;
 

ares/ares_init.c

@@ -305,7 +305,8 @@ static int get_iphlpapi_dns_info (char *ret_buf, size_t ret_size)
 {
   FIXED_INFO    *fi   = alloca (sizeof(*fi));
   DWORD          size = sizeof (*fi);
-  DWORD (WINAPI *GetNetworkParams) (FIXED_INFO*, DWORD*);  /* available only on Win-98/2000+ */
+  typedef DWORD (WINAPI* get_net_param_func) (FIXED_INFO*, DWORD*);
+  get_net_param_func GetNetworkParams;  /* available only on Win-98/2000+ */
   HMODULE        handle;
   IP_ADDR_STRING *ipAddr;
   int            i, count = 0;
@@ -321,7 +322,7 @@ static int get_iphlpapi_dns_info (char *ret_buf, size_t ret_size)
   if (!handle)
      return (0);
 
-  (void*)GetNetworkParams = GetProcAddress (handle, "GetNetworkParams");
+  GetNetworkParams = (get_net_param_func) GetProcAddress (handle, "GetNetworkParams");
   if (!GetNetworkParams)
      goto quit;
 
@@ -375,7 +376,7 @@ quit:
 static int init_by_resolv_conf(ares_channel channel)
 {
   char *line = NULL;
-  int status, nservers = 0, nsort = 0;
+  int status = -1, nservers = 0, nsort = 0;
   struct server_state *servers = NULL;
   struct apattern *sortlist = NULL;
 
@@ -421,7 +422,7 @@ DhcpNameServer
       goto okay;
   }
 
-  if (IsNT)
+  if (IS_NT())
   {
     if (RegOpenKeyEx(
           HKEY_LOCAL_MACHINE, WIN_NS_NT_KEY, 0,

ares/windows_port.c

@@ -39,28 +39,34 @@ ares_strcasecmp(const char *a, const char *b)
 }
 #endif
 
+/*
+ * Number of micro-seconds between the beginning of the Windows epoch
+ * (Jan. 1, 1601) and the Unix epoch (Jan. 1, 1970).
+ */
+#if defined(_MSC_VER) || defined(__WATCOMC__)
+#define EPOCH_FILETIME 11644473600000000Ui64
+#else
+#define EPOCH_FILETIME 11644473600000000ULL
+#endif
+
 int
 ares_gettimeofday(struct timeval *tv, struct timezone *tz)
 {
     FILETIME        ft;
     LARGE_INTEGER   li;
     __int64         t;
-    static int      tzflag;
 
     if (tv)
     {
         GetSystemTimeAsFileTime(&ft);
         li.LowPart  = ft.dwLowDateTime;
         li.HighPart = ft.dwHighDateTime;
-        t  = li.QuadPart;       /* In 100-nanosecond intervals */
-#if 0
-        t -= EPOCHFILETIME;     /* Offset to the Epoch time */
-#endif
-        t /= 10;                /* In microseconds */
+        t  = li.QuadPart / 10;   /* In micro-second intervals */
+        t -= EPOCH_FILETIME;     /* Offset to the Epoch time */
         tv->tv_sec  = (long)(t / 1000000);
         tv->tv_usec = (long)(t % 1000000);
     }
-
+    (void) tz;
     return 0;
 }