//go:noinline
func ttiLeaf() *ttiResult {
	// Get a printed stack trace.
	printed := string(debug.Stack())
	return &ttiResult{printed}
}

//go:noinline
func ttiSimple1() *ttiResult {
	return ttiSimple2()
}
func ttiSimple2() *ttiResult {
	return ttiSimple3()
}
func ttiSimple3() *ttiResult {
	return ttiLeaf()
}

//go:noinline
func ttiSigpanic1() (res *ttiResult) {
	defer func() {
		res = ttiLeaf()
		recover()