s := make([]int, 1)

	t.Log(unsafe.Pointer(&s),unsafe.Pointer(&(s[0])),len(s),cap(s))

	t.Logf("%p\n",s)

//runtime包下
type slice struct {

	array unsafe.Pointer

	len   int

	cap   int

}

// reflect包下的方法
func (v Value) Pointer() uintptr {

	// TODO: deprecate

	k := v.kind()

	switch k {

	case Chan, Map, Ptr, UnsafePointer:

		return uintptr(v.pointer())

	case Func:

		if v.flag&flagMethod != 0 {

			// As the doc comment says, the returned pointer is an

			// underlying code pointer but not necessarily enough to

			// identify a single function uniquely. All method expressions

			// created via reflect have the same underlying code pointer,

			// so their Pointers are equal. The function used here must

			// match the one used in makeMethodValue.

			f := methodValueCall

			return **(**uintptr)(unsafe.Pointer(&f))

		}

		p := v.pointer()

		// Non-nil func value points at data block.

		// First word of data block is actual code.

		if p != nil {

			p = *(*unsafe.Pointer)(p)

		}

		return uintptr(p)

	case Slice: // 这里获取的当前slice中存储的数组引用的内存地址

		return (*SliceHeader)(v.ptr).Data

	}

	panic(&ValueError{"reflect.Value.Pointer", v.kind()})

}