* sysdeps/posix/getaddrinfo.c (getaddrinfo): If the system has

neither IPv4 nor IPv6 addresses defined, don't do anything.
git-mirror · Nov 27, 2008 · ca4dc0f · ca4dc0f
1 parent d6c9ebb
commit ca4dc0f
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diff --git a/ChangeLog b/ChangeLog
@@ -1,3 +1,8 @@
+2008-11-26  Ulrich Drepper  <drepper@redhat.com>
+
+	* sysdeps/posix/getaddrinfo.c (getaddrinfo): If the system has
+	neither IPv4 nor IPv6 addresses defined, don't do anything.
+
 2008-11-26  Roland McGrath  <roland@redhat.com>
 
 	* sysdeps/unix/sysv/linux/alpha/ipc_priv.h: Renamed to ...

diff --git a/sysdeps/posix/getaddrinfo.c b/sysdeps/posix/getaddrinfo.c
@@ -2110,6 +2110,11 @@ getaddrinfo (const char *name, const char *service,
 	     narrow down the search.  */
 	  if (! seen_ipv4 || ! seen_ipv6)
 	    {
+	      if (! seen_ipv4 && ! seen_ipv6)
+		/* Neither IPv4 nor IPv6 interfaces exist, nothing to
+		   return.  */
+		goto err_noname;
+
 	      local_hints = *hints;
 	      local_hints.ai_family = seen_ipv4 ? PF_INET : PF_INET6;
 	      hints = &local_hints;
@@ -2119,6 +2124,7 @@ getaddrinfo (const char *name, const char *service,
 	       || (hints->ai_family == PF_INET6 && ! seen_ipv6))
 	{
 	  /* We cannot possibly return a valid answer.  */
+	err_noname:
 	  free (in6ai);
 	  return EAI_NONAME;
 	}