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
7package main
8
9import "fmt"
10
11//go:noinline
12func f(x uint64) uint64 {
13	s := "\x04"
14	c := s[0]
15	return x << c << 4
16}
17func main() {
18	if want, got := uint64(1<<8), f(1); want != got {
19		panic(fmt.Sprintf("want %x got %x", want, got))
20	}
21}
22