Fix build with GCC and Clang

Fixes #3712.

src/commandline_options.cpp

@@ -67,6 +67,7 @@ commandline_options::commandline_options (const std::vector<std::string>& args)
 	campaign_scenario(),
 	campaign_skip_story(false),
 	clock(false),
+	core_id(),
 	data_path(false),
 	data_dir(),
 	debug(false),
@@ -119,14 +120,19 @@ commandline_options::commandline_options (const std::vector<std::string>& args)
 	server(),
 	username(),
 	password(),
+	render_image(),
+	render_image_dst(),
 	screenshot(false),
 	screenshot_map_file(),
 	screenshot_output_file(),
+	script_file(),
+	plugin_file(),
 	script_unsafe_mode(false),
 	strict_validation(false),
 	test(),
 	unit_test(),
 	headless_unit_test(false),
+	timeout(),
 	noreplaycheck(false),
 	mptest(false),
 	userconfig_path(false),
@@ -134,11 +140,16 @@ commandline_options::commandline_options (const std::vector<std::string>& args)
 	userdata_path(false),
 	userdata_dir(),
 	validcache(false),
+	validate_core(false),
+	validate_addon(),
+	validate_schema(),
+	validate_wml(),
+	validate_with(),
 	version(false),
 	report(false),
 	windowed(false),
 	with_replay(false),
-	validate_core(false),
+	translation_percent(),
 	args_(args.begin() + 1 , args.end()),
 	args0_(*args.begin()),
 	all_(),

src/serialization/schema/tag.cpp

@@ -34,8 +34,10 @@ wml_tag::wml_tag(const config& cfg)
 	, tags_()
 	, keys_()
 	, links_()
-	, any_tag_(cfg["any_tag"].to_bool())
+	, conditions_()
+	, super_refs_()
 	, fuzzy_(name_.find_first_of("*?") != std::string::npos)
+	, any_tag_(cfg["any_tag"].to_bool())
 {
 	if(max_ < 0) {
 		max_ = INT_MAX;
@@ -467,12 +469,14 @@ bool wml_condition::matches(const config& cfg) const
 	return cfg.matches(filter_);
 }
 
+template<>
 void wml_tag::tag_iterator::init(const wml_tag& base_tag)
 {
 	current = base_tag.tags_.begin();
 	condition_queue.push(&base_tag);
 }
 
+template<>
 void wml_tag::tag_iterator::ensure_valid_or_end() {
 	while(current == condition_queue.front()->tags_.end()) {
 		condition_queue.pop();
@@ -485,12 +489,14 @@ void wml_tag::tag_iterator::ensure_valid_or_end() {
 	}
 }
 
+template<>
 void wml_tag::key_iterator::init(const wml_tag& base_tag)
 {
 	current = base_tag.keys_.begin();
 	condition_queue.push(&base_tag);
 }
 
+template<>
 void wml_tag::key_iterator::ensure_valid_or_end() {
 	while(current == condition_queue.front()->keys_.end()) {
 		condition_queue.pop();

src/serialization/schema/tag.hpp

@@ -376,9 +376,6 @@ private:
 	void expand(wml_tag& root);
 };
 
-extern template class wml_tag::iterator<wml_tag>;
-extern template class wml_tag::iterator<wml_key>;
-
 /**
  * Stores information about a conditional portion of a tag.
  * Format is the same as wml_tag.

src/serialization/schema_validator.cpp

@@ -363,6 +363,7 @@ void schema_validator::print(message_info& el)
 		break;
 	case MISSING_KEY:
 		missing_key_error(el.file, el.line, el.tag, el.key, create_exceptions_);
+		break;
 	case WRONG_TYPE:
 		wrong_type_error(el.file, el.line, el.tag, el.key, el.value, create_exceptions_);
 		break;