py::class_<Engine>(m, "Engine", "Simulation Engine")
.def(py::init([](std::vector<std::string> args) {
static char noarg[] = {'\0'};
- int argc = args.size();
+ int argc = static_cast<int>(args.size());
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();