simple_writer: allow writeInfo() also in data section

CMakeLists.txt

@@ -19,9 +19,6 @@ add_subdirectory(ulog_cpp)
 
 if(MAIN_PROJECT)
 	add_compile_options(
-		# always enable debug symbols (for stack trace)
-		-g
-
 		# Warnings
 		-Wall
 		-Wextra
@@ -30,7 +27,6 @@ if(MAIN_PROJECT)
 		# disabled warnings
 		-Wno-missing-field-initializers
 		-Wno-unused-parameter
-		-Wno-float-equal # TODO: this is required for cli11 2.3.2
 	)
 
 	# compiler specific flags

ulog_cpp/messages.hpp

@@ -107,9 +107,9 @@ class Field {
    * the attributes are dynamically computed in nested type resolution.
    */
   struct TypeAttributes {
-    std::string name;  ///< name of the type
-    BasicType type;    ///< type as an enum
-    int size;          ///< size in bytes. Recursively computed for nested types
+    std::string name;                   ///< name of the type
+    BasicType type{BasicType::NESTED};  ///< type as an enum
+    int size{0};                        ///< size in bytes. Recursively computed for nested types
     std::shared_ptr<MessageFormat> nested_message{nullptr};  /// < nested message format
 
     TypeAttributes() = default;

ulog_cpp/simple_writer.hpp

@@ -36,17 +36,14 @@ class SimpleWriter {
   ~SimpleWriter();
 
   /**
-   * Write a key-value info to the header. Typically used for versioning information.
+   * Write a key-value info. Typically used for versioning information and written to the header.
    * @tparam T one of std::string, int32_t, float
    * @param key (unique) name, e.g. sys_name
    * @param value
    */
   template <typename T>
   void writeInfo(const std::string& key, const T& value)
   {
-    if (_header_complete) {
-      throw UsageException("Header already complete");
-    }
     _writer->messageInfo(ulog_cpp::MessageInfo(key, value));
   }