From 3a18658cf9196ecd8e55d5231818e6ee3b242a43 Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Sat, 6 Jan 2018 18:50:58 +0100
Subject: check return value

---
 src/set/gnunet-service-set_union.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/src/set/gnunet-service-set_union.c b/src/set/gnunet-service-set_union.c
index 9586dcf27..219cc6235 100644
--- a/src/set/gnunet-service-set_union.c
+++ b/src/set/gnunet-service-set_union.c
@@ -389,10 +389,11 @@ get_ibf_key (const struct GNUNET_HashCode *src)
   struct IBF_Key key;
   uint16_t salt = 0;
 
-  GNUNET_CRYPTO_kdf (&key, sizeof (key),
-                     src, sizeof *src,
-                     &salt, sizeof (salt),
-                     NULL, 0);
+  GNUNET_assert (GNUNET_OK ==
+		 GNUNET_CRYPTO_kdf (&key, sizeof (key),
+				    src, sizeof *src,
+				    &salt, sizeof (salt),
+				    NULL, 0));
   return key;
 }
 
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