I got this error while using malloc() to allocate some memory to your struct * soon after investing some this debugging the code, I last but not least applied free() purpose to free the allocated memory and subsequently the error message absent :) CowperKettleCowperKettle 36.7k1818 gold badges137137 silver badges235235 bronze https://funstackballonlinegame31863.snack-blog.com/36592228/top-stack-ball-speed-mode-secrets