[liuliu]

Yeah, that is unfortunate. Even if you want to do that (in C, the correct way, of course, is to name them differently), should use macro to select correct function prototype to dispatch to, that still enables type checking and avoid the variadic function non-sense. Variadic function is pure evil (seriously, who can remember these random rules that in variadic function, a char will be promoted to int and a float will be promoted to double ...)