From 76ecd85c2cf4b9b1fb2350774d24860537d1d571 Mon Sep 17 00:00:00 2001
From: Mark Haines <mark.haines@matrix.org>
Date: Fri, 7 Aug 2015 18:25:21 +0100
Subject: Fix a crash when decoding messages that are too short

---
 src/message.cpp | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'src/message.cpp')

diff --git a/src/message.cpp b/src/message.cpp
index 93473b9..8e807fd 100644
--- a/src/message.cpp
+++ b/src/message.cpp
@@ -49,6 +49,9 @@ T varint_decode(
     std::uint8_t const * varint_end
 ) {
     T value = 0;
+    if (varint_end == varint_start) {
+        return 0;
+    }
     do {
         value <<= 7;
         value |= 0x7F & *(--varint_end);
-- 
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