From: Dmitry Bilunov <kmeaw@kmeaw.com>
Date: Sat, 24 Jun 2017 14:49:34 +0000 (+0200)
Subject: getaddrinfo: Merge IPv6 addresses and IPv4 addresses [BZ #21295]
X-Git-Tag: glibc-2.26~240
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5cf88a83f27b0cd2d5a83511930e40d716c939eb;p=thirdparty%2Fglibc.git

getaddrinfo: Merge IPv6 addresses and IPv4 addresses [BZ #21295]
---

diff --git a/ChangeLog b/ChangeLog
index 1b4c8ddd7e1..eb9eb588a4a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2017-06-24  Dmitry Bilunov  <kmeaw@kmeaw.com>
+
+	[BZ #21295]
+	* sysdeps/posix/getaddrinfo.c (convert_hostent_to_gaih_addrtuple):
+	Append addresses at the end of the list.
+
 2017-06-23  H.J. Lu  <hongjiu.lu@intel.com>
 
 	[BZ #21666]
diff --git a/sysdeps/posix/getaddrinfo.c b/sysdeps/posix/getaddrinfo.c
index 4ec17961adb..91e0a76c5cf 100644
--- a/sysdeps/posix/getaddrinfo.c
+++ b/sysdeps/posix/getaddrinfo.c
@@ -190,16 +190,16 @@ gaih_inet_serv (const char *servicename, const struct gaih_typeproto *tp,
 
 /* Convert struct hostent to a list of struct gaih_addrtuple objects.
    h_name is not copied, and the struct hostent object must not be
-   deallocated prematurely.  *RESULT must be NULL or a pointer to an
-   object allocated using malloc, which is freed.  */
+   deallocated prematurely.  *RESULT must be NULL or a pointer to a
+   linked-list.  The new addresses are appended at the end.  */
 static bool
 convert_hostent_to_gaih_addrtuple (const struct addrinfo *req,
 				   int family,
 				   struct hostent *h,
 				   struct gaih_addrtuple **result)
 {
-  free (*result);
-  *result = NULL;
+  while (*result)
+    result = &(*result)->next;
 
   /* Count the number of addresses in h->h_addr_list.  */
   size_t count = 0;