commit f178e59fa5eefbbd37fde040ae8334aa5c857ee1
Author: Andreas Schwab <schwab@suse.de>
Date:   Tue Mar 27 12:16:11 2018 +0200

    Fix crash in resolver on memory allocation failure (bug 23005)

diff --git a/resolv/res_send.c b/resolv/res_send.c
index b396aae03c9eeb6e..01e4da4188b63d39 100644
--- a/resolv/res_send.c
+++ b/resolv/res_send.c
@@ -471,6 +471,11 @@ __res_context_send (struct resolv_context *ctx,
 					'\0',
 					sizeof (struct sockaddr_in6)
 					- sizeof (struct sockaddr_in));
+			else
+			  {
+			    __set_errno (ENOMEM);
+			    return -1;
+			  }
 		}
 		EXT(statp).nscount = statp->nscount;
 	}