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https://github.com/golang/go
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26de581a70
Omits printing the file:line:column when trying to
open non-existent files
Given:
go tool compile x.go
* Before:
x.go:0: open x.go: no such file or directory
* After:
open x.go: no such file or directory
Reverts the revert in CL 231043 by only fixing the case
of non-existent errors which is what the original bug
was about. The fix for "permission errors" will come later
on when I have bandwidth to investigate the differences
between running with root and why os.Open works for some
builders and not others.
Fixes #36437
Change-Id: I9c8a0981ad708b504bb43990a4105b42266fa41f
Reviewed-on: https://go-review.googlesource.com/c/go/+/230941
Run-TryBot: Emmanuel Odeke <emm.odeke@gmail.com>
Reviewed-by: Robert Griesemer <gri@golang.org>
50 lines
1.1 KiB
Go
50 lines
1.1 KiB
Go
// run
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// +build !nacl,!js
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// Copyright 2020 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Tests that when non-existent files are passed to the
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// compiler, such as in:
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// go tool compile foo
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// we don't print the beginning position:
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// foo:0: open foo: no such file or directory
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// but instead omit it and print out:
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// open foo: no such file or directory
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package main
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import (
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"fmt"
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"io/ioutil"
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"os"
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"os/exec"
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"regexp"
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)
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func main() {
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tmpDir, err := ioutil.TempDir("", "issue36437")
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if err != nil {
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panic(err)
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}
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defer os.RemoveAll(tmpDir)
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msgOrErr := func(msg []byte, err error) string {
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if len(msg) == 0 && err != nil {
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return err.Error()
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}
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return string(msg)
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}
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filename := "non-existent.go"
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output, err := exec.Command("go", "tool", "compile", filename).CombinedOutput()
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got := msgOrErr(output, err)
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regFilenamePos := regexp.MustCompile(filename + ":\\d+")
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if regFilenamePos.MatchString(got) {
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fmt.Printf("Error message must not contain filename:pos, but got:\n%q\n", got)
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}
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}
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