From 0cb17e58767abab30d350d1c8fad383dba2d50e9 Mon Sep 17 00:00:00 2001
From: Johannes Meyer <johannes@intermodalics.eu>
Date: Sat, 16 Oct 2021 06:47:31 +0200
Subject: [PATCH] Fix ReadFromBuffer() for empty strings in Debug mode with
 assertions enabled

---
 include/ros_msg_parser/helper_functions.hpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/ros_msg_parser/helper_functions.hpp b/include/ros_msg_parser/helper_functions.hpp
index e5e023e..e6a33dc 100644
--- a/include/ros_msg_parser/helper_functions.hpp
+++ b/include/ros_msg_parser/helper_functions.hpp
@@ -97,6 +97,11 @@ template <> inline void ReadFromBuffer( const Span<const uint8_t>& buffer, size_
     throw std::runtime_error("Buffer overrun in RosMsgParser::ReadFromBuffer");
   }
 
+  if (string_size == 0) {
+    destination = std::string();
+    return;
+  }
+
   const char* buffer_ptr = reinterpret_cast<const char*>( &buffer[offset] );
   offset += string_size;