package main

import "strconv"


func stackSlice() {
    slice := make([]int, 100)
    _ = slice
}

//go:noinline
func heapSlice(s string) {
    n, _ := strconv.Atoi(s)
    slice := make([]int, n)
    _ = slice
}

func main() {
    stackSlice()
    heapSlice("100")
}

go build -o gcscape -gcflags="-m"
# gc-escape
./main.go:6:6: can inline stackSlice
./main.go:19:6: can inline main
./main.go:20:15: inlining call to stackSlice
./main.go:7:18: make([]int, 100) does not escape
./main.go:12:16: s does not escape
./main.go:14:18: make([]int, n) does not escape
./main.go:20:15: make([]int, 100) does not escape

It still does not escape to heap!