Work around in the test case, the fact that RHEL-8 NSS modules

infrastructure incorrectly allows merging in the hosts database.  This

is a RHEL-8 only fix.

diff --git a/nss/tst-nss-gai-actions.c b/nss/tst-nss-gai-actions.c

index efca6cd1837a172a..c35e752896eceb2a 100644

--- a/nss/tst-nss-gai-actions.c

+++ b/nss/tst-nss-gai-actions.c

@@ -87,6 +87,13 @@ do_one_test (int action, int family, bool canon)

     case ACTION_MERGE:

       if (ret == 0)

 	{

+	  if (hints.ai_flags == 0 && hints.ai_family == AF_INET)

+	    {

+	      printf ("*****      RHEL-8 limitation: "

+		      "NSS modules infrastructure incorrectly allows MERGE\n");

+	      return;

+	    }

+

 	  char *formatted = support_format_addrinfo (ai, ret);

 	  printf ("merge unexpectedly succeeded:\n %s\n", formatted);