1// run
2
3//go:build !js && !wasip1 && gc
4
5// Copyright 2014 The Go Authors. All rights reserved.
6// Use of this source code is governed by a BSD-style
7// license that can be found in the LICENSE file.
8
9package main
10
11import (
12	"fmt"
13	"io/ioutil"
14	"os"
15	"os/exec"
16	"path/filepath"
17	"regexp"
18)
19
20func main() {
21	err := os.Chdir(filepath.Join("fixedbugs", "issue9355.dir"))
22	check(err)
23
24	f, err := ioutil.TempFile("", "issue9355-*.o")
25	if err != nil {
26		fmt.Println(err)
27		os.Exit(1)
28	}
29	f.Close()
30
31	out := run("go", "tool", "compile", "-p=p", "-o", f.Name(), "-S", "a.go")
32	os.Remove(f.Name())
33
34	// 6g/8g print the offset as dec, but 5g/9g print the offset as hex.
35	patterns := []string{
36		`rel 0\+\d t=R_ADDR p\.x\+8\r?\n`,       // y = &x.b
37		`rel 0\+\d t=R_ADDR p\.x\+(28|1c)\r?\n`, // z = &x.d.q
38		`rel 0\+\d t=R_ADDR p\.b\+5\r?\n`,       // c = &b[5]
39		`rel 0\+\d t=R_ADDR p\.x\+(88|58)\r?\n`, // w = &x.f[3].r
40	}
41	for _, p := range patterns {
42		if ok, err := regexp.Match(p, out); !ok || err != nil {
43			println(string(out))
44			panic("can't find pattern " + p)
45		}
46	}
47}
48
49func run(cmd string, args ...string) []byte {
50	out, err := exec.Command(cmd, args...).CombinedOutput()
51	if err != nil {
52		fmt.Println(string(out))
53		fmt.Println(err)
54		os.Exit(1)
55	}
56	return out
57}
58
59func check(err error) {
60	if err != nil {
61		fmt.Println("BUG:", err)
62		os.Exit(1)
63	}
64}
65