go issue36437 源码
golang issue36437 代码
文件路径：/test/fixedbugs/issue36437.go
// run
// +build !nacl,!js,gc
// Copyright 2020 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.
// Tests that when non-existent files are passed to the
// compiler, such as in:
// go tool compile foo
// we don't print the beginning position:
// foo:0: open foo: no such file or directory
// but instead omit it and print out:
// open foo: no such file or directory
package main
import (
"fmt"
"io/ioutil"
"os"
"os/exec"
"regexp"
)
func main() {
tmpDir, err := ioutil.TempDir("", "issue36437")
if err != nil {
panic(err)
}
defer os.RemoveAll(tmpDir)
msgOrErr := func(msg []byte, err error) string {
if len(msg) == 0 && err != nil {
return err.Error()
}
return string(msg)
}
filename := "non-existent.go"
output, err := exec.Command("go", "tool", "compile", filename).CombinedOutput()
got := msgOrErr(output, err)
regFilenamePos := regexp.MustCompile(filename + ":\\d+")
if regFilenamePos.MatchString(got) {
fmt.Printf("Error message must not contain filename:pos, but got:\n%q\n", got)
}
}
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