有函数递归时，传递的数组查看指针地址居然不是值传递

以下是一道子集回溯递归的题目，打印每次设置进结果的 list 发现，最后两个结果指针地址一致？ 请问大家遇见过么。为什么会这样 func main() { subsets([]int{3, 2, 4,1}) } func subsets(nums []int) [][]int { var result [][]int subsetsRecursion(nums, 0, []int{}, &result) fmt.Println(result) return result } func subsetsRecursion(nums []int, n int, list []int, result *[][]int) { // 终止条件 if n == len(nums) { //temp := make([]int,len(list)) //copy(temp,list) //*result = append(*result, temp) *result = append(*result, list) fmt.Printf("%p,%d,%d\n",list,n,list) return } subsetsRecursion(nums, n+1, list, result) list = append(list, nums[n]) subsetsRecursion(nums, n+1, list, result) } 打印结果： 0x119f3e0,4,[] 0xc00012a008,4,[1] 0xc00012a028,4,[4] 0xc00012a040,4,[4 1] 0xc00012a058,4,[2] 0xc00012a070,4,[2 1] 0xc00012a090,4,[2 4] 0xc000138020,4,[2 4 1] 0xc00012a0c0,4,[3] 0xc00012a0d0,4,[3 1] 0xc00012a0f0,4,[3 4] 0xc000138040,4,[3 4 1] 0xc00012a130,4,[3 2] 0xc000138060,4,[3 2 1] ## 以下两个地址居然相同？ 0xc000138080,4,[3 2 4] 0xc000138080,4,[3 2 4 1] [[] [1] [4] [4 1] [2] [2 1] [2 4] [2 4 1] [3] [3 1] [3 4] [3 4 1] [3 2] [3 2 1] [3 2 4] [3 2 4 1]]