1 // run 2 3 // Copyright 2017 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 package main 8 9 import ( 10 "bytes" 11 "fmt" 12 "io/ioutil" 13 "log" 14 "os" 15 "os/exec" 16 "path/filepath" 17 "runtime" 18 "strings" 19 ) 20 21 func main() { 22 if runtime.GOOS == "nacl" { 23 return // no file system available on builders 24 } 25 26 f, err := ioutil.TempFile("", "issue22660.go") 27 if err != nil { 28 log.Fatal(err) 29 } 30 f.Close() 31 defer os.Remove(f.Name()) 32 33 // path must appear in error messages even if we strip them with -trimpath 34 path := filepath.Join("users", "xxx", "go") 35 var src bytes.Buffer 36 fmt.Fprintf(&src, "//line %s:1\n", filepath.Join(path, "foo.go")) 37 38 if err := ioutil.WriteFile(f.Name(), src.Bytes(), 0660); err != nil { 39 log.Fatal(err) 40 } 41 42 out, err := exec.Command("go", "tool", "compile", fmt.Sprintf("-trimpath=%s", path), f.Name()).CombinedOutput() 43 if err == nil { 44 log.Fatalf("expected compiling %s to fail", f.Name()) 45 } 46 47 if !strings.HasPrefix(string(out), path) { 48 log.Fatalf("expected full path (%s) in error message, got:\n%s", path, out) 49 } 50 } 51
