Author: kevlo
Date: Fri Feb  7 15:26:19 2014
New Revision: 261602
URL: http://svnweb.freebsd.org/changeset/base/261602

Log:
  Set errno on inet_ntop(3) failure.
  
  Reviewed by:  glebius

Modified:
  head/lib/libc/inet/inet_ntop.c

Modified: head/lib/libc/inet/inet_ntop.c
==============================================================================
--- head/lib/libc/inet/inet_ntop.c      Fri Feb  7 15:18:23 2014        
(r261601)
+++ head/lib/libc/inet/inet_ntop.c      Fri Feb  7 15:26:19 2014        
(r261602)
@@ -45,7 +45,7 @@ __FBSDID("$FreeBSD$");
 static const char *inet_ntop4(const u_char *src, char *dst, socklen_t size);
 static const char *inet_ntop6(const u_char *src, char *dst, socklen_t size);
 
-/* char *
+/* const char *
  * inet_ntop(af, src, dst, size)
  *     convert a network format address to presentation format.
  * return:
@@ -169,8 +169,10 @@ inet_ntop6(const u_char *src, char *dst,
                if (i == 6 && best.base == 0 && (best.len == 6 ||
                    (best.len == 7 && words[7] != 0x0001) ||
                    (best.len == 5 && words[5] == 0xffff))) {
-                       if (!inet_ntop4(src+12, tp, sizeof tmp - (tp - tmp)))
+                       if (!inet_ntop4(src+12, tp, sizeof tmp - (tp - tmp))) {
+                               errno = ENOSPC;
                                return (NULL);
+                       }
                        tp += strlen(tp);
                        break;
                }
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