C：malloc-function生成的自由临时数组

I have a c function that produces my a int array using malloc. It works quiet well and I think it isn't really important what it does because the problem doesn't really have anything to do with that. (In this case it calculates the numbers to a given int and base). I need this array temporary in a function, which might be a sub function of a sub function of a ... (you got the idea, point this function can be used several times) and before the return I would like to run free, but it doesn't work. Here is a testing code (it sorts an array of ints to the amount of ones in their binary representation using qsort (yes I know could have calculated the results more directly, but the point is the probleme I run into when trying to run free (here comment out in function ones))):I have a c function that produces my a int arra