extra assertion

diff --git a/src/util/network.c b/src/util/network.c
index f7c1e53c1b3fca30e30569f3e8d0e7aaa30d31bd..d23f1a23d7726da871c06360a69aa485f23272d7 100644 (file)
--- a/src/util/network.c
+++ b/src/util/network.c
@@ -814,6 +814,7 @@ GNUNET_NETWORK_fdset_copy_native (struct GNUNET_NETWORK_FDSet *to,
 void GNUNET_NETWORK_fdset_set_native (struct GNUNET_NETWORK_FDSet *to,
                                      int nfd)
 {
+  GNUNET_assert(nfd >= 0);
   FD_SET (nfd, &to->sds);
   to->nsds = GNUNET_MAX (nfd + 1, to->nsds);
 }