fix compiler warning

Makefile.inc

@@ -19,6 +19,7 @@ CSOURCES = ares__close_sockets.c	\
   ares_library_init.c			\
   ares_llist.c				\
   ares_mkquery.c			\
+  ares_nowarn.c				\
   ares_parse_a_reply.c			\
   ares_parse_aaaa_reply.c		\
   ares_parse_ns_reply.c			\
@@ -47,6 +48,7 @@ HHEADERS = ares.h			\
   ares_ipv6.h				\
   ares_library_init.h			\
   ares_llist.h				\
+  ares_nowarn.h				\
   ares_private.h			\
   ares_rules.h				\
   ares_strcasecmp.h			\

ares__read_line.c

@@ -20,6 +20,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include "ares.h"
+#include "ares_nowarn.h"
 #include "ares_private.h"
 
 /* This is an internal function.  Its contract is to read a line from
@@ -46,7 +47,9 @@ int ares__read_line(FILE *fp, char **buf, size_t *bufsize)
 
   for (;;)
     {
-      if (!fgets(*buf + offset, (int)(*bufsize - offset), fp))
+      int bytestoread = aresx_uztosi(*bufsize - offset);
+
+      if (!fgets(*buf + offset, bytestoread, fp))
         return (offset != 0) ? 0 : (ferror(fp)) ? ARES_EFILE : ARES_EOF;
       len = offset + strlen(*buf + offset);
       if ((*buf)[len - 1] == '\n')
@@ -55,6 +58,8 @@ int ares__read_line(FILE *fp, char **buf, size_t *bufsize)
           break;
         }
       offset = len;
+      if(len < *bufsize - 1)
+        continue;
 
       /* Allocate more space. */
       newbuf = realloc(*buf, *bufsize * 2);

ares_nowarn.c

@@ -0,0 +1,53 @@
+/* $Id$ */
+
+/* Copyright (C) 2010 by Daniel Stenberg
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose.  It is provided "as is"
+ * without express or implied warranty.
+ */
+
+
+#include "ares_setup.h"
+
+#include "ares_nowarn.h"
+
+#if (SIZEOF_INT == 2)
+#  define CARES_MASK_SINT  0x7FFF
+#  define CARES_MASK_UINT  0xFFFF
+#elif (SIZEOF_INT == 4)
+#  define CARES_MASK_SINT  0x7FFFFFFF
+#  define CARES_MASK_UINT  0xFFFFFFFF
+#elif (SIZEOF_INT == 8)
+#  define CARES_MASK_SINT  0x7FFFFFFFFFFFFFFF
+#  define CARES_MASK_UINT  0xFFFFFFFFFFFFFFFF
+#elif (SIZEOF_INT == 16)
+#  define CARES_MASK_SINT  0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
+#  define CARES_MASK_UINT  0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
+#endif
+
+/*
+** size_t to signed int
+*/
+
+int aresx_uztosi(size_t uznum)
+{
+#ifdef __INTEL_COMPILER
+#  pragma warning(push)
+#  pragma warning(disable:810) /* conversion may lose significant bits */
+#endif
+
+  return (int)(uznum & (size_t) CARES_MASK_SINT);
+
+#ifdef __INTEL_COMPILER
+#  pragma warning(pop)
+#endif
+}

ares_nowarn.h

@@ -0,0 +1,23 @@
+#ifndef HEADER_CARES_NOWARN_H
+#define HEADER_CARES_NOWARN_H
+
+/* $Id$ */
+
+/* Copyright (C) 2010 by Daniel Stenberg
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose.  It is provided "as is"
+ * without express or implied warranty.
+ */
+
+int aresx_uztosi(size_t uznum);
+
+#endif /* HEADER_CARES_NOWARN_H */