It seems that include order is very sensitive using modules and some …

…includes seem to be missing from asio

CMakeLists.txt

@@ -51,7 +51,7 @@ if(BUILD_TESTS)
 endif()
 
 # Clang format all files
-file(GLOB_RECURSE ALL_SOURCE_FILES src/*.cpp include/**/*.hpp examples/*.cpp tests/*.cpp)
+file(GLOB_RECURSE ALL_SOURCE_FILES src/*.cpp include/**/*.hpp examples/*.cpp tests/*.cpp src/*.cxx)
 add_custom_target(
  clangformat-fix
  COMMAND clang-format

examples/client_example.cxx

@@ -3,8 +3,10 @@
 #include <iostream>
 #include <thread>
 #include <vector>
+// clang-format off
 #include <exception> // Missing include inside asio
 #include <asio.hpp>
+// clang-format on
 
 import modbus;
 

examples/server_example.cxx

@@ -1,8 +1,10 @@
 // Copyright (c) 2023, Skaginn3x (https://skaginn3x.com)
 
+// clang-format off
 #include <exception>
 #include <asio.hpp>
 #include <iostream>
+// clang-format on
 
 import modbus;
 

src/client.cxx

@@ -1,9 +1,11 @@
 // Copyright (c) 2023, Skaginn3x (https://Skaginn3x.com)
 module;
 
+// clang-format off
 #include <expected>
 #include <exception>
 #include <asio.hpp>
+// clang-format on
 
 export module modbus:client;
 import :packet;

src/deserialize.cxx

@@ -1,9 +1,11 @@
 module;
 #include <system_error>
+// clang-format off
 #include <expected>
 #include <exception>
 #include <asio.hpp>
 #include <span>
+// clang-format on
 export module modbus:deserialize;
 import :function;
 import :error;

src/serialize.cxx

@@ -1,9 +1,11 @@
 // Copyright (c) 2023, Skaginn3x (https://skaginn3x.com)
 module;
+// clang-format off
 #include <utility>
 #include <cstdint>
 #include <exception>
 #include <asio.hpp> // This include is only here for cross platform htons and ntohs
+// clang-format on
 export module modbus:serialize;
 import :function;
 

src/server.cxx

@@ -5,8 +5,10 @@ module;
 #include <ranges>
 #include <string>
 
+// clang-format off
 #include <exception>
 #include <asio.hpp>
+// clang-format on
 #include <asio/experimental/awaitable_operators.hpp>
 export module modbus:server;
 import :tcp;

src/tcp.cxx

@@ -1,9 +1,11 @@
 module;
+// clang-format off
 #include <exception>
 #include <asio.hpp>
 #include <cstdint>
 #include <span>
 #include <utility>
+// clang-format on
 
 export module modbus:tcp;
 

tests/deserialization.cxx

@@ -1,9 +1,11 @@
+// clang-format off
 #include <exception>
 #include <array>
 #include <iostream>
 #include <span>
 #include <boost/ut.hpp>
 #include <expected>
+// clang-format on
 
 import modbus;
 

tests/integration.cxx

@@ -1,8 +1,9 @@
-
+// clang-format off
 #include <exception>
 #include <asio.hpp>
 #include <array>
 #include <boost/ut.hpp>
+// clang-format on
 
 import modbus;