mirror of
https://github.com/golang/go
synced 2024-11-08 18:36:22 -07:00
e861c3e003
Follow-up on https://golang.org/cl/124595; no semantic changes. Updates #26411. Change-Id: Ic1c4622dbf79529ff61530f9c25ec742c2abe5ca Reviewed-on: https://go-review.googlesource.com/c/142720 Run-TryBot: Robert Griesemer <gri@golang.org> Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
93 lines
1.9 KiB
Go
93 lines
1.9 KiB
Go
// +build !nacl,!js
|
|
// run
|
|
|
|
// Copyright 2018 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.
|
|
|
|
// Ensure that label redefinition errors print out
|
|
// a column number that matches the start of the current label's
|
|
// definition instead of the label delimiting token ":"
|
|
|
|
package main
|
|
|
|
import (
|
|
"bytes"
|
|
"fmt"
|
|
"io/ioutil"
|
|
"log"
|
|
"os"
|
|
"os/exec"
|
|
"path/filepath"
|
|
"regexp"
|
|
)
|
|
|
|
func main() {
|
|
tmpdir, err := ioutil.TempDir("", "issue26411")
|
|
if err != nil {
|
|
log.Fatalf("Failed to create temporary directory: %v", err)
|
|
}
|
|
defer os.RemoveAll(tmpdir)
|
|
|
|
tests := []struct {
|
|
code string
|
|
errors []string
|
|
}{
|
|
{
|
|
code: `
|
|
package main
|
|
|
|
func main() {
|
|
foo:
|
|
foo:
|
|
}
|
|
`,
|
|
errors: []string{
|
|
"^.+:5:1: label foo defined and not used\n",
|
|
".+:6:1: label foo already defined at .+:5:1\n$",
|
|
},
|
|
},
|
|
{
|
|
code: `
|
|
package main
|
|
|
|
func main() {
|
|
|
|
bar:
|
|
bar:
|
|
bar:
|
|
bar :
|
|
}
|
|
`,
|
|
|
|
errors: []string{
|
|
"^.+:6:13: label bar defined and not used\n",
|
|
".+:7:4: label bar already defined at .+:6:13\n",
|
|
".+:8:1: label bar already defined at .+:6:13\n",
|
|
".+:9:1: label bar already defined at .+:6:13\n$",
|
|
},
|
|
},
|
|
}
|
|
|
|
for i, test := range tests {
|
|
filename := filepath.Join(tmpdir, fmt.Sprintf("%d.go", i))
|
|
if err := ioutil.WriteFile(filename, []byte(test.code), 0644); err != nil {
|
|
log.Printf("#%d: failed to create file %s", i, filename)
|
|
continue
|
|
}
|
|
output, _ := exec.Command("go", "tool", "compile", filename).CombinedOutput()
|
|
|
|
// remove each matching error from the output
|
|
for _, err := range test.errors {
|
|
rx := regexp.MustCompile(err)
|
|
match := rx.Find(output)
|
|
output = bytes.Replace(output, match, nil, 1) // remove match (which might be nil) from output
|
|
}
|
|
|
|
// at this point all output should have been consumed
|
|
if len(output) != 0 {
|
|
log.Printf("Test case %d has unmatched errors:\n%s", i, output)
|
|
}
|
|
}
|
|
}
|