c2047754c3
Compiler changes:
* Change map assignment to use mapassign and assign value directly.
* Change string iteration to use decoderune, faster for ASCII strings.
* Change makeslice to take int, and use makeslice64 for larger values.
* Add new noverflow field to hmap struct used for maps.
Unresolved problems, to be fixed later:
* Commented out test in go/types/sizes_test.go that doesn't compile.
* Commented out reflect.TestStructOf test for padding after zero-sized field.
Reviewed-on: https://go-review.googlesource.com/35231
gotools/:
Updates for Go 1.8rc1.
* Makefile.am (go_cmd_go_files): Add bug.go.
(s-zdefaultcc): Write defaultPkgConfig.
* Makefile.in: Rebuild.
From-SVN: r244456
50 lines
1.1 KiB
Go
50 lines
1.1 KiB
Go
// Copyright 2016 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.
|
|
|
|
package testenv
|
|
|
|
import (
|
|
"io/ioutil"
|
|
"os"
|
|
"path/filepath"
|
|
"sync"
|
|
"syscall"
|
|
)
|
|
|
|
var symlinkOnce sync.Once
|
|
var winSymlinkErr error
|
|
|
|
func initWinHasSymlink() {
|
|
tmpdir, err := ioutil.TempDir("", "symtest")
|
|
if err != nil {
|
|
panic("failed to create temp directory: " + err.Error())
|
|
}
|
|
defer os.RemoveAll(tmpdir)
|
|
|
|
err = os.Symlink("target", filepath.Join(tmpdir, "symlink"))
|
|
if err != nil {
|
|
err = err.(*os.LinkError).Err
|
|
switch err {
|
|
case syscall.EWINDOWS, syscall.ERROR_PRIVILEGE_NOT_HELD:
|
|
winSymlinkErr = err
|
|
}
|
|
}
|
|
os.Remove("target")
|
|
}
|
|
|
|
func hasSymlink() (ok bool, reason string) {
|
|
symlinkOnce.Do(initWinHasSymlink)
|
|
|
|
switch winSymlinkErr {
|
|
case nil:
|
|
return true, ""
|
|
case syscall.EWINDOWS:
|
|
return false, ": symlinks are not supported on your version of Windows"
|
|
case syscall.ERROR_PRIVILEGE_NOT_HELD:
|
|
return false, ": you don't have enough privileges to create symlinks"
|
|
}
|
|
|
|
return false, ""
|
|
}
|