From 5616437a4d1d59a1903754b71e56aa5bdd1dc6bc Mon Sep 17 00:00:00 2001
From: Dan Rose <rotu@users.noreply.github.com>
Date: Fri, 17 Apr 2020 16:54:06 -0500
Subject: [PATCH] Fix serialization on non-32-bit, big-endian systems (#159)

---
 rmw_cyclonedds_cpp/src/Serialization.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/rmw_cyclonedds_cpp/src/Serialization.cpp b/rmw_cyclonedds_cpp/src/Serialization.cpp
index 2db412d..8263c58 100644
--- a/rmw_cyclonedds_cpp/src/Serialization.cpp
+++ b/rmw_cyclonedds_cpp/src/Serialization.cpp
@@ -299,8 +299,9 @@ protected:
   void serialize_u32(CDRCursor * cursor, size_t value) const
   {
     assert(value <= std::numeric_limits<uint32_t>::max());
+    auto u32_value = static_cast<uint32_t>(value);
     cursor->align(4);
-    cursor->put_bytes(&value, 4);
+    cursor->put_bytes(&u32_value, 4);
   }
 
   static size_t get_cdr_size_of_primitive(ROSIDL_TypeKind tk)