Include First Argument in va_list object

Is it possible to include the first argument of a function within a va_list? I want to pass the arguments from one function to another function. int main(){ test(1,2,3,4,5,-1); } void test(int firstArg, ...){ va_list va; va_start(va, firstArg); passFunction(va); } void passFunction(va_list va){ int x; while((x = va_arg(ap,int))!=-1){ cout << x << endl; } } Output I Want: 1 2 3 4 5 Actual Output: 2 3 4 5 Is there any way to achieve this without explicitly passing the first argument to the function?