diff --git a/example/example.cpp b/example/example.cpp
index 82535a71..81398caf 100644
--- a/example/example.cpp
+++ b/example/example.cpp
@@ -35,7 +35,7 @@ int main(int argc, char* argv[])
 
     auto start = system_clock::now();
     for(unsigned int i = 1; i <= howmany ; ++i)
-        my_logger.info("Hello logger: ");
+        my_logger.info("Hello logger: ") << 4.5 << 123 << "asdasd" << 123 << 'f';
 
     //auto s = howmany - as->q().size();
     auto s = howmany;
diff --git a/include/c11log/details/log_msg.h b/include/c11log/details/log_msg.h
new file mode 100644
index 00000000..7233ee25
--- /dev/null
+++ b/include/c11log/details/log_msg.h
@@ -0,0 +1,25 @@
+#pragma once
+
+namespace c11log
+{
+namespace details
+{
+struct log_msg
+{
+    log_msg() = default;
+    log_msg(level::level_enum l):msg_level(l) {};
+    log_msg(const log_msg& other)
+    {
+        msg_buf = other.msg_buf;
+        msg_time = other.msg_time;
+        msg_header_size = other.msg_header_size;
+        msg_level = other.msg_level;
+    }
+
+    bufpair_t msg_buf;
+    log_clock::time_point msg_time;
+    std::size_t msg_header_size;
+    level::level_enum msg_level;
+};
+}
+}