Fix compiler warning

ares/ares__get_hostent.c

@@ -38,10 +38,10 @@ int ares__get_hostent(FILE *fp, int family, struct hostent **host)
 {
   char *line = NULL, *p, *q, **alias;
   char *txtaddr, *txthost, *txtalias;
-  int status, linesize, addrfam, naliases;
+  int status, addrfam;
+  size_t addrlen, linesize, naliases;
   struct in_addr addr;
   struct in6_addr addr6;
-  size_t addrlen;
   struct hostent *hostent = NULL;
 
   *host = NULL; /* Assume failure */
@@ -194,12 +194,13 @@ int ares__get_hostent(FILE *fp, int family, struct hostent **host)
         memcpy(hostent->h_addr_list[0], &addr6, sizeof(struct in6_addr));
 
       /* Copy aliases. */
-      hostent->h_aliases = malloc((((size_t)naliases) + 1) * sizeof(char *));
+      hostent->h_aliases = malloc((naliases + 1) * sizeof(char *));
       if (!hostent->h_aliases)
         break;
       alias = hostent->h_aliases;
-      while (naliases >= 0)
+      while (naliases)
         *(alias + naliases--) = NULL;
+      *alias = NULL;
       while (txtalias)
         {
           p = txtalias;

ares/ares__read_line.c

@@ -30,7 +30,7 @@
  * appropriate.  The initial value of *buf should be NULL.  After the
  * calling routine is done reading lines, it should free *buf.
  */
-int ares__read_line(FILE *fp, char **buf, int *bufsize)
+int ares__read_line(FILE *fp, char **buf, size_t *bufsize)
 {
   char *newbuf;
   size_t offset = 0;
@@ -46,7 +46,7 @@ int ares__read_line(FILE *fp, char **buf, int *bufsize)
 
   while (1)
     {
-      if (!fgets(*buf + offset, *bufsize - (int)offset, fp))
+      if (!fgets(*buf + offset, *bufsize - offset, fp))
         return (offset != 0) ? 0 : (ferror(fp)) ? ARES_EFILE : ARES_EOF;
       len = offset + strlen(*buf + offset);
       if ((*buf)[len - 1] == '\n')

ares/ares_init.c

@@ -809,7 +809,7 @@ DhcpNameServer
   {
     char *p;
     FILE *fp;
-    int linesize;
+    size_t linesize;
     int error;
 
     /* Don't read resolv.conf and friends if we don't have to */

ares/ares_private.h

@@ -312,7 +312,7 @@ void ares__send_query(ares_channel channel, struct query *query,
                       struct timeval *now);
 void ares__close_sockets(ares_channel channel, struct server_state *server);
 int ares__get_hostent(FILE *fp, int family, struct hostent **host);
-int ares__read_line(FILE *fp, char **buf, int *bufsize);
+int ares__read_line(FILE *fp, char **buf, size_t *bufsize);
 void ares__free_query(struct query *query);
 unsigned short ares__generate_new_id(rc4_key* key);
 struct timeval ares__tvnow(void);

ares/ares_search.c

@@ -238,7 +238,8 @@ static int single_domain(ares_channel channel, const char *name, char **s)
   const char *hostaliases;
   FILE *fp;
   char *line = NULL;
-  int linesize, status;
+  int status;
+  size_t linesize;
   const char *p, *q;
   int error;