1// run
2
3// Copyright 2021 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
7// Issue 44823: miscompilation with store combining.
8
9package main
10
11import "encoding/binary"
12
13//go:noinline
14func Id(a [8]byte) (x [8]byte) {
15	binary.LittleEndian.PutUint64(x[:], binary.LittleEndian.Uint64(a[:]))
16	return
17}
18
19var a = [8]byte{1, 2, 3, 4, 5, 6, 7, 8}
20
21func main() {
22	x := Id(a)
23	if x != a {
24		panic("FAIL")
25	}
26}
27