From 50378e53f03ae111d5d1dcda848e99e1656d242a Mon Sep 17 00:00:00 2001
From: Marcus10110 <markgarrison@saleae.com>
Date: Mon, 19 Oct 2020 18:57:01 -0700
Subject: [PATCH] simple crash fix

---
 src/SMBusAnalyzer.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/SMBusAnalyzer.cpp b/src/SMBusAnalyzer.cpp
index 77bd5e4..7c688b9 100644
--- a/src/SMBusAnalyzer.cpp
+++ b/src/SMBusAnalyzer.cpp
@@ -247,7 +247,7 @@ void SMBusAnalyzer::WorkerThread()
         {
             if( byte.IsComplete() )
             {
-                if( packet.chunks.back().size() == 1 ) // if this is the first byte of the packet
+                if( !packet.chunks.empty() && packet.chunks.back().size() == 1 ) // if this is the first byte of the packet
                     mResults->AddFrame( byte.ToAddrFrame( NULL ) );
                 else
                     mResults->AddFrame( byte.ToFrame() );