#define SOL_CHECK_ARGUMENTS 1 #include #include int main(int, char*[]) { struct test { int blah = 0; }; test t; sol::state lua; lua.set_function("f", [&t]() { return t; }); lua.set_function("g", [&t]() -> test& { return t; }); lua.script("t1 = f()"); lua.script("t2 = g()"); test& from_lua_t1 = lua["t1"]; test& from_lua_t2 = lua["t2"]; // not the same: 'f' lambda copied c_assert(&from_lua_t1 != &t); // the same: 'g' lambda returned reference c_assert(&from_lua_t2 == &t); return 0; }