Add error checks for DirAccess creation.

core/config/project_settings.cpp

@@ -962,6 +962,7 @@ Error ProjectSettings::_save_custom_bnd(const String &p_file) { // add other par
 #ifdef TOOLS_ENABLED
 bool _csproj_exists(String p_root_dir) {
 	Ref<DirAccess> dir = DirAccess::open(p_root_dir);
+	ERR_FAIL_COND_V(dir.is_null(), false);
 
 	dir->list_dir_begin();
 	String file_name = dir->_get_next();

editor/editor_node.cpp

@@ -5954,6 +5954,7 @@ void EditorNode::_dropped_files(const Vector<String> &p_files) {
 
 void EditorNode::_add_dropped_files_recursive(const Vector<String> &p_files, String to_path) {
 	Ref<DirAccess> dir = DirAccess::create(DirAccess::ACCESS_FILESYSTEM);
+	ERR_FAIL_COND(dir.is_null());
 
 	for (int i = 0; i < p_files.size(); i++) {
 		String from = p_files[i];
@@ -5963,6 +5964,8 @@ void EditorNode::_add_dropped_files_recursive(const Vector<String> &p_files, Str
 			Vector<String> sub_files;
 
 			Ref<DirAccess> sub_dir = DirAccess::open(from);
+			ERR_FAIL_COND(sub_dir.is_null());
+
 			sub_dir->list_dir_begin();
 
 			String next_file = sub_dir->get_next();

editor/editor_settings.cpp

@@ -914,6 +914,8 @@ void EditorSettings::create() {
 	if (EditorPaths::get_singleton()->are_paths_valid()) {
 		// Validate editor config file.
 		Ref<DirAccess> dir = DirAccess::open(EditorPaths::get_singleton()->get_config_dir());
+		ERR_FAIL_COND(dir.is_null());
+
 		String config_file_name = "editor_settings-" + itos(VERSION_MAJOR) + ".tres";
 		config_file_path = EditorPaths::get_singleton()->get_config_dir().path_join(config_file_name);
 		if (!dir->file_exists(config_file_name)) {

editor/export/editor_export_platform.cpp

@@ -1383,6 +1383,8 @@ void EditorExportPlatform::zip_folder_recursive(zipFile &p_zip, const String &p_
 	String dir = p_folder.is_empty() ? p_root_path : p_root_path.path_join(p_folder);
 
 	Ref<DirAccess> da = DirAccess::open(dir);
+	ERR_FAIL_COND(da.is_null());
+
 	da->list_dir_begin();
 	String f = da->get_next();
 	while (!f.is_empty()) {

editor/filesystem_dock.cpp

@@ -1516,6 +1516,8 @@ void FileSystemDock::_try_duplicate_item(const FileOrFolder &p_item, const Strin
 	} else {
 		// Recursively duplicate all files inside the folder.
 		Ref<DirAccess> old_dir = DirAccess::open(old_path);
+		ERR_FAIL_COND(old_dir.is_null());
+
 		Ref<FileAccess> file_access = FileAccess::create(FileAccess::ACCESS_RESOURCES);
 		old_dir->set_include_navigational(false);
 		old_dir->list_dir_begin();
@@ -3308,6 +3310,8 @@ bool FileSystemDock::_get_imported_files(const String &p_path, String &r_extensi
 	}
 
 	Ref<DirAccess> da = DirAccess::open(p_path);
+	ERR_FAIL_COND_V(da.is_null(), false);
+
 	da->list_dir_begin();
 	String n = da->get_next();
 	while (!n.is_empty()) {

main/main.cpp

@@ -2224,6 +2224,8 @@ Error Main::setup2() {
 		// Editor setting class is not available, load config directly.
 		if (!init_use_custom_screen && (editor || project_manager) && EditorPaths::get_singleton()->are_paths_valid()) {
 			Ref<DirAccess> dir = DirAccess::open(EditorPaths::get_singleton()->get_config_dir());
+			ERR_FAIL_COND_V(dir.is_null(), FAILED);
+
 			String config_file_name = "editor_settings-" + itos(VERSION_MAJOR) + ".tres";
 			String config_file_path = EditorPaths::get_singleton()->get_config_dir().path_join(config_file_name);
 			if (dir->file_exists(config_file_name)) {
@@ -3295,6 +3297,8 @@ bool Main::start() {
 
 						if (sep == -1) {
 							Ref<DirAccess> da = DirAccess::create(DirAccess::ACCESS_FILESYSTEM);
+							ERR_FAIL_COND_V(da.is_null(), false);
+
 							local_game_path = da->get_current_dir().path_join(local_game_path);
 						} else {
 							Ref<DirAccess> da = DirAccess::open(local_game_path.substr(0, sep));

modules/gltf/gltf_document.cpp

@@ -3051,6 +3051,8 @@ Error GLTFDocument::_serialize_images(Ref<GLTFState> p_state) {
 			String relative_texture_dir = "textures";
 			String full_texture_dir = p_state->base_path.path_join(relative_texture_dir);
 			Ref<DirAccess> da = DirAccess::open(p_state->base_path);
+			ERR_FAIL_COND_V(da.is_null(), FAILED);
+
 			if (!da->dir_exists(full_texture_dir)) {
 				da->make_dir(full_texture_dir);
 			}

platform/android/export/export_plugin.cpp

@@ -2635,6 +2635,8 @@ void EditorExportPlatformAndroid::_clear_assets_directory() {
 	if (da_res->dir_exists(APK_ASSETS_DIRECTORY)) {
 		print_verbose("Clearing APK assets directory...");
 		Ref<DirAccess> da_assets = DirAccess::open(APK_ASSETS_DIRECTORY);
+		ERR_FAIL_COND(da_assets.is_null());
+
 		da_assets->erase_contents_recursive();
 		da_res->remove(APK_ASSETS_DIRECTORY);
 	}
@@ -2643,6 +2645,8 @@ void EditorExportPlatformAndroid::_clear_assets_directory() {
 	if (da_res->dir_exists(AAB_ASSETS_DIRECTORY)) {
 		print_verbose("Clearing AAB assets directory...");
 		Ref<DirAccess> da_assets = DirAccess::open(AAB_ASSETS_DIRECTORY);
+		ERR_FAIL_COND(da_assets.is_null());
+
 		da_assets->erase_contents_recursive();
 		da_res->remove(AAB_ASSETS_DIRECTORY);
 	}

scene/resources/resource_format_text.cpp

@@ -1389,6 +1389,8 @@ Error ResourceLoaderText::save_as_binary(const String &p_path) {
 	wf->store_buffer(data.ptr(), data.size());
 	{
 		Ref<DirAccess> dar = DirAccess::open(temp_file.get_base_dir());
+		ERR_FAIL_COND_V(dar.is_null(), FAILED);
+
 		dar->remove(temp_file);
 	}
 

servers/movie_writer/movie_writer_pngwav.cpp

@@ -70,6 +70,8 @@ Error MovieWriterPNGWAV::write_begin(const Size2i &p_movie_size, uint32_t p_fps,
 		//Remove existing files before writing anew
 		uint32_t idx = 0;
 		Ref<DirAccess> d = DirAccess::open(base_path.get_base_dir());
+		ERR_FAIL_COND_V(d.is_null(), FAILED);
+
 		String file = base_path.get_file();
 		while (true) {
 			String path = file + zeros_str(idx) + ".png";