gistfile1.go

package main

import (
	"log"
)

func a() []*int {
	foo := make([]*int, 10)

	for i, v := range foo {
		log.Printf(`%v`, v)
		x := i
		foo[i] = &x
	}

	return foo
}

func b(foo []*int) {
	for _, v := range foo {
		log.Printf(`%v == %d`, v, *v)
	}
}

func main() {
	foo := a()
	b(foo)
}

Easier checking if slice field has not been set by checking for nil instead of the datatypes default value.