From c79942d2efe5a199e10628d7aebeca57566a41e2 Mon Sep 17 00:00:00 2001
From: John <ebusd@ebusd.eu>
Date: Fri, 5 Nov 2021 11:27:45 +0100
Subject: [PATCH] fix compiler warning with newer versions (fixes #448)

---
 src/ebusd/bushandler.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/ebusd/bushandler.cpp b/src/ebusd/bushandler.cpp
index e2410981..f2f69755 100644
--- a/src/ebusd/bushandler.cpp
+++ b/src/ebusd/bushandler.cpp
@@ -425,6 +425,14 @@ void BusHandler::run() {
   } while (isRunning());
 }
 
+#ifndef FALLTHROUGH
+#if defined(__GNUC__) && __GNUC__ >= 7
+#define FALLTHROUGH [[fallthrough]];
+#else
+#define FALLTHROUGH
+#endif
+#endif
+
 result_t BusHandler::handleSymbol() {
   unsigned int timeout = SYN_TIMEOUT;
   symbol_t sendSymbol = ESC;
@@ -438,6 +446,7 @@ result_t BusHandler::handleSymbol() {
 
   case bs_skip:
     timeout = SYN_TIMEOUT;
+    FALLTHROUGH
   case bs_ready:
     if (m_currentRequest != nullptr) {
       setState(bs_ready, RESULT_ERR_TIMEOUT);  // just to be sure an old BusRequest is cleaned up