std::unique_ptr<char* []> argv(new char*[argc + 1]);
for (int i = 0; i != argc; ++i)
argv[i] = args[i].empty() ? noarg : &args[i].front();
std::unique_ptr<char* []> argv(new char*[argc + 1]);
for (int i = 0; i != argc; ++i)
argv[i] = args[i].empty() ? noarg : &args[i].front();