- bug report #2796358 (http://curl.haxx.se/bug/view.cgi?id=2796358) pointed

out that the cookie parser would leak memory when it parses cookies that are
  received with domain, path etc set multiple times in the same header. While
  such a cookie is questionable, they occur in the wild and libcurl no longer
  leaks memory for them. I added such a header to test case 8.

tests/data/test8

@@ -38,6 +38,7 @@ Funny-head: yesyes
 Set-Cookie: foobar=name; domain=127.0.0.1; path=/;
 Set-Cookie: mismatch=this; domain=127.0.0.1; path="/silly/";
 Set-Cookie: partmatch=present; domain=.0.0.1; path=/;
+Set-Cookie: duplicate=test; domain=.0.0.1; domain=.0.0.1; path=/donkey;
 Set-Cookie: cookie=yes; path=/we;
 Set-Cookie: nocookie=yes; path=/WE;