substack-escaping-return-values.go

func f1() **int {
    // t escapes to heap
    t := 0   
    // x1 escapes to heap
    x1 := &t
    return &x1
}

func f2() *int {
    // t escapes to heap
    t := 0 
    x2 := &t
    return x2
}

func f3() int {
    t := 0
    x3 := t
    return x3
}

func f4() map[string]int {
    // kv escapes to heap
    kv := make(map[string]int) 
    return kv
}

func f5() []int {
    // s escapes to heap
    s := []int{} 
    return s
}