slice := make([]cpointer, numPointers)
copysize := C.size_t(numPointers * int(unsafe.Sizeof(cpointer)))
C.memcpy(unsafe.Pointer(&slice[0]), unsafe.Pointer(cpointer), copysize)

for i := 0; i < numPointers; i++ {
    p := slice[i]
    fmt.Println(uintptr(unsafe.Pointer(p)))
}