Don't take the address of an element of a slice

addrslice.go

// https://play.golang.org/p/ZVV6drJRqva
package main

import (
	"fmt"
)

type S struct {
	i int64
}

func main() {
	var s1 *S
	var s2 *S
	var ll []S
	for i := int64(0); i < 200; i++ {
		fmt.Printf("iteration %v\n", i)
		ll = append(ll, S{i + 1000000})
		const start = 40
		if i == start {
			s1 = &ll[3]
		}
		if i > start {
			s2 = &ll[3]
			if s1 != s2 {
				panic(fmt.Errorf("%p != %p", s1, s2))
			}
		}
	}
}