From 349d33052b2e0993624a541f35962216f5b5c8f6 Mon Sep 17 00:00:00 2001
From: Paul Hauner <paul@paulhauner.com>
Date: Sun, 12 May 2019 09:33:47 +1000
Subject: [PATCH] Fix SSZ encode impl for fixed_len_vec

---
 eth2/utils/fixed_len_vec/src/impls.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/eth2/utils/fixed_len_vec/src/impls.rs b/eth2/utils/fixed_len_vec/src/impls.rs
index 48cc9cb5f..ab67288b0 100644
--- a/eth2/utils/fixed_len_vec/src/impls.rs
+++ b/eth2/utils/fixed_len_vec/src/impls.rs
@@ -59,6 +59,14 @@ where
         true
     }
 
+    fn ssz_fixed_len() -> usize {
+        if <Self as ssz::Encodable>::is_ssz_fixed_len() {
+            T::ssz_fixed_len() * N::to_usize()
+        } else {
+            ssz::BYTES_PER_LENGTH_OFFSET
+        }
+    }
+
     fn ssz_append(&self, buf: &mut Vec<u8>) {
         if T::is_ssz_fixed_len() {
             buf.reserve(T::ssz_fixed_len() * self.len());