1// run
2
3// Copyright 2022 The Go Authors. All rights reserved.
4// Use of this source code is governed by a BSD-style
5// license that can be found in the LICENSE file.
6
7package main
8
9func main() {
10	for i := 0; i < 10000; i++ {
11		h(i)
12		sink = make([]byte, 1024) // generate some garbage
13	}
14}
15
16func h(iter int) {
17	var x [32]byte
18	for i := 0; i < 32; i++ {
19		x[i] = 99
20	}
21	g(&x)
22	if x == ([32]byte{}) {
23		return
24	}
25	for i := 0; i < 32; i++ {
26		println(x[i])
27	}
28	panic(iter)
29}
30
31//go:noinline
32func g(x interface{}) {
33	switch e := x.(type) {
34	case *[32]byte:
35		var c [32]byte
36		*e = c
37	case *[]byte:
38		*e = nil
39	}
40}
41
42var sink []byte
43