/usr/share/go-1.8/test/fixedbugs/issue18906.go is in golang-1.8-src 1.8.3-2ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 | // run
// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package main
//go:noinline
func f(x int) {
}
//go:noinline
func val() int8 {
return -1
}
var (
array = [257]int{}
slice = array[1:]
)
func init() {
for i := range array {
array[i] = i - 1
}
}
func main() {
x := val()
y := int(uint8(x))
f(y) // try and force y to be calculated and spilled
if slice[y] != 255 {
panic("incorrect value")
}
}
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