From e54397299eddc9cab8eb0ae1731689d46ef83f41 Mon Sep 17 00:00:00 2001
From: Guido Vranken <guidovranken@gmail.com>
Date: Fri, 11 Aug 2017 00:27:40 +0200
Subject: [PATCH] fuzzer-mroute.c: add comments

---
 src/openvpn/fuzzer-mroute.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/openvpn/fuzzer-mroute.c b/src/openvpn/fuzzer-mroute.c
index e1e53a1c..9fee74e0 100644
--- a/src/openvpn/fuzzer-mroute.c
+++ b/src/openvpn/fuzzer-mroute.c
@@ -6,6 +6,10 @@
 #include "socket.h"
 #include "buffer.h"
 
+/* Start of serialization of struct mroute_helper.
+ * This is necessary to test whether the data structure contains
+ * any uninitialized data. If it does, MemorySanitizer will detect
+ * it upon serialization */
 static void serialize_mroute_helper(struct mroute_helper* mh)
 {
     test_undefined_memory(&mh->cache_generation, sizeof(mh->cache_generation));
@@ -15,10 +19,13 @@ static void serialize_mroute_helper(struct mroute_helper* mh)
     test_undefined_memory(&mh->net_len_refcount, mh->n_net_len * sizeof(mh->net_len_refcount[0]));
 }
 
+/* End of serialization of struct mroute_helper. */
+
 int LLVMFuzzerInitialize(int *argc, char ***argv)
 {
     return 1;
 }
+
 int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
 {
     struct mroute_addr src, dest, esrc, edest;