Isaev Denis 52c9b88c25
reduce mem. usage of unused and update staticcheck (#1063)
The primary improvement is in early clearing of
analyzed package's TypeInfo, facts, etc for
whole program analyzers (`unused`). Clear it when it
becomes unused and GC collects them early. Initially this
clearing was performed for all analyzers except `unused`.

Update staticcheck from v0.0.1-2019.2.3 to v0.0.1-2020.1.4

Also in this commit:
  * speed up loading packages from export data (2.5s -> 2.1s for std)
    by not using mutex for export data since it was allowed in
    x/tools#07722704da13
  * make an order of execution of linters stable
  * update renameio and robustio
  * use robustio in caching

Relates: #987, #994, #995, #1011
2020-05-03 15:20:17 +03:00

43 lines
948 B
Go

// Copyright 2019 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.
// +build !plan9,!windows,!js
package renameio
import (
"io/ioutil"
"os"
"path/filepath"
"syscall"
"testing"
)
func TestWriteFileModeAppliesUmask(t *testing.T) {
dir, err := ioutil.TempDir("", "renameio")
if err != nil {
t.Fatalf("Failed to create temporary directory: %v", err)
}
defer os.RemoveAll(dir)
const mode = 0644
const umask = 0007
defer syscall.Umask(syscall.Umask(umask))
file := filepath.Join(dir, "testWrite")
err = WriteFile(file, []byte("go-build"), mode)
if err != nil {
t.Fatalf("Failed to write file: %v", err)
}
fi, err := os.Stat(file)
if err != nil {
t.Fatalf("Stat %q (looking for mode %#o): %s", file, mode, err)
}
if fi.Mode()&os.ModePerm != 0640 {
t.Errorf("Stat %q: mode %#o want %#o", file, fi.Mode()&os.ModePerm, 0640)
}
}