From 19f45eaa799a77d5c67cbefe3342f27774e2e6f8 Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Tue, 21 Sep 2010 16:41:14 +0200
Subject: duphandle: use ares_dup()

curl_easy_duphandle() was not properly duping the ares channel. The
ares_dup() function was introduced in c-ares 1.6.0 so by starting to use
this function we also raise the bar and require c-ares >= 1.6.0
(released Dec 9, 2008) for such builds.

Reported by: Ning Dong
Bug: http://curl.haxx.se/mail/lib-2010-08/0318.html
---
 m4/curl-confopts.m4 | 1 +
 1 file changed, 1 insertion(+)

(limited to 'm4')

diff --git a/m4/curl-confopts.m4 b/m4/curl-confopts.m4
index 11fdd5301..bb25bb925 100644
--- a/m4/curl-confopts.m4
+++ b/m4/curl-confopts.m4
@@ -472,6 +472,7 @@ AC_DEFUN([CURL_CHECK_LIB_ARES], [
           ares_channel channel;
           ares_cancel(channel); /* added in 1.2.0 */
           ares_process_fd(channel, 0, 0); /* added in 1.4.0 */
+          ares_dup(&channel, channel); /* added in 1.6.0 */
         ]])
       ],[
         AC_MSG_RESULT([yes])
-- 
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