455 candidates in 78 tests in 1 source file
$DIR/src/os/os_test.go: dry running
$DIR/src/os/os_test.go: mutilating
$DIR/src/os/os_test.go: Warning: Failed to run test `TestMain`

This may indicate a bug in Necessist. Consider opening an issue at: https://github.com/trailofbits/necessist/issues

Silence this warning with: --allow run-test-failed
$DIR/src/os/os_test.go: Warning: Failed to run test `TestMain`
$DIR/src/os/os_test.go: Warning: Failed to run test `TestMain`
$DIR/src/os/os_test.go: `testenv.MustHaveSymlink(t)` passed
$DIR/src/os/os_test.go: `err = Symlink(path, link)` failed
$DIR/src/os/os_test.go: `fi, err = Stat(link)` failed
$DIR/src/os/os_test.go: `testenv.MustHaveSymlink(t)` passed
$DIR/src/os/os_test.go: `err = Symlink("y", "x")` passed
$DIR/src/os/os_test.go: `_, err = Stat("x")` failed
$DIR/src/os/os_test.go: `b = make([]byte, 100)` failed
$DIR/src/os/os_test.go: `n, err = f.Read(b)` failed
$DIR/src/os/os_test.go: `_, err = file.Read(b)` failed
$DIR/src/os/os_test.go: `t.Run(".", testReaddirnames(".", dot))` passed
$DIR/src/os/os_test.go: `t.Run("sysdir", testReaddirnames(sysdir.name, sysdir.files))` passed
$DIR/src/os/os_test.go: `t.Run(".", testReaddir(".", dot))` passed
$DIR/src/os/os_test.go: `t.Run("sysdir", testReaddir(sysdir.name, sysdir.files))` passed
$DIR/src/os/os_test.go: `t.Run(".", testReadDir(".", dot))` passed
$DIR/src/os/os_test.go: `t.Run("sysdir", testReadDir(sysdir.name, sysdir.files))` passed
$DIR/src/os/os_test.go: `dir = "/system/bin"` passed
$DIR/src/os/os_test.go: `dir = wd` passed
$DIR/src/os/os_test.go: `dir = "/bin"` passed
$DIR/src/os/os_test.go: `dir = Getenv("SystemRoot") + "\\system32"` passed
$DIR/src/os/os_test.go: `f.Write([]byte(strings.Repeat("X", i)))` passed
$DIR/src/os/os_test.go: `d, err = Open(dir)` failed
$DIR/src/os/os_test.go: `t.Helper()` passed
$DIR/src/os/os_test.go: `t.Helper()` passed
$DIR/src/os/os_test.go: `t.Helper()` passed
$DIR/src/os/os_test.go: `openDir()` failed
$DIR/src/os/os_test.go: `fn(0, 105, nil)` failed
$DIR/src/os/os_test.go: `fn(0, 0, nil)` passed
$DIR/src/os/os_test.go: `openDir()` failed
$DIR/src/os/os_test.go: `fn(-1, 105, nil)` failed
$DIR/src/os/os_test.go: `fn(-2, 0, nil)` passed
$DIR/src/os/os_test.go: `fn(0, 0, nil)` passed
$DIR/src/os/os_test.go: `openDir()` failed
$DIR/src/os/os_test.go: `fn(1, 1, nil)` failed
$DIR/src/os/os_test.go: `fn(2, 2, nil)` failed
$DIR/src/os/os_test.go: `fn(105, 102, nil)` failed
$DIR/src/os/os_test.go: `fn(3, 0, io.EOF)` passed
$DIR/src/os/os_test.go: `*LstatP = Lstat` passed
$DIR/src/os/os_test.go: `touch(t, filepath.Join(dir, "good1"))` failed
$DIR/src/os/os_test.go: `touch(t, filepath.Join(dir, "x"))` failed
$DIR/src/os/os_test.go: `touch(t, filepath.Join(dir, "good2"))` failed
$DIR/src/os/os_test.go: `s[i] = fi.Name()` failed
$DIR/src/os/os_test.go: `sort.Strings(s)` failed
$DIR/src/os/os_test.go: `xerr = ErrNotExist` failed
$DIR/src/os/os_test.go: `xerr = errors.New("some real error")` failed
$DIR/src/os/os_test.go: `f.Write([]byte("foo"))` passed
$DIR/src/os/os_test.go: `testenv.MustHaveLink(t)` passed
$DIR/src/os/os_test.go: `err = Link(to, from)` failed
$DIR/src/os/os_test.go: `err = Link(none, none)` failed
$DIR/src/os/os_test.go: `err = Link(to, from)` failed
$DIR/src/os/os_test.go: `testenv.MustHaveSymlink(t)` passed
$DIR/src/os/os_test.go: `err = Symlink(to, from)` failed
$DIR/src/os/os_test.go: `fromstat, err = Lstat(from)` failed
$DIR/src/os/os_test.go: `fromstat, err = Stat(from)` failed
$DIR/src/os/os_test.go: `file, err = Open(from)` passed
$DIR/src/os/os_test.go: `testenv.MustHaveSymlink(t)` passed
$DIR/src/os/os_test.go: `s = s + s + s + s + s + s + s + s + s + s + s + s + s + s + s` passed
$DIR/src/os/os_test.go: `err = Rename(from, to)` failed
$DIR/src/os/os_test.go: `_, err = Stat(to)` passed
$DIR/src/os/os_test.go: `err = WriteFile(from, fromData, 0777)` failed
$DIR/src/os/os_test.go: `err = Rename(from, to)` failed
$DIR/src/os/os_test.go: `_, err = Stat(from)` failed
$DIR/src/os/os_test.go: `Mkdir(to, 0777)` passed
$DIR/src/os/os_test.go: `Mkdir(from, 0777)` passed
$DIR/src/os/os_test.go: `Mkdir(to, 0777)` failed
$DIR/src/os/os_test.go: `pt.Run(test.name, func(t *testing.T) {
			defer chtmpdir(t)()

			if err := test.create(); err != nil {
				t.Fatalf("failed to create test file: %s", err)
			}

			if _, err := Stat(to); err != nil {
				// Sanity check that the underlying filesystem is not case sensitive.
				if IsNotExist(err) {
					t.Skipf("case sensitive filesystem")
				}
				t.Fatalf("stat %q, got: %q", to, err)
			}

			if err := Rename(from, to); err != nil {
				t.Fatalf("unexpected error when renaming from %q to %q: %s", from, to, err)
			}

			fd, err := Open(".")
			if err != nil {
				t.Fatalf("Open .: %s", err)
			}

			// Stat does not return the real case of the file (it returns what the called asked for)
			// So we have to use readdir to get the real name of the file.
			dirNames, err := fd.Readdirnames(-1)
			fd.Close()
			if err != nil {
				t.Fatalf("readdirnames: %s", err)
			}

			if dirNamesLen := len(dirNames); dirNamesLen != 1 {
				t.Fatalf("unexpected dirNames len, got %q, want %q", dirNamesLen, 1)
			}

			if dirNames[0] != to {
				t.Errorf("unexpected name, got %q, want %q", dirNames[0], to)
			}
		})` passed
$DIR/src/os/os_test.go: `testenv.MustHaveExec(t)` passed
$DIR/src/os/os_test.go: `cmd = Getenv("COMSPEC")` passed
$DIR/src/os/os_test.go: `dir = Getenv("SystemRoot")` passed
$DIR/src/os/os_test.go: `args = []string{"/c", "cd"}` passed
$DIR/src/os/os_test.go: `cmd, err = exec.LookPath("pwd")` failed
$DIR/src/os/os_test.go: `dir = "/"` failed
$DIR/src/os/os_test.go: `args = []string{}` passed
$DIR/src/os/os_test.go: `args = append([]string{cmdbase}, args...)` failed
$DIR/src/os/os_test.go: `t.Run("absolute", testStartProcess(dir, cmd, args, dir))` passed
$DIR/src/os/os_test.go: `fm = FileMode(0444)` passed
$DIR/src/os/os_test.go: `checkMode(t, f.Name(), fm)` passed
$DIR/src/os/os_test.go: `fm = FileMode(0123)` passed
$DIR/src/os/os_test.go: `fm = FileMode(0666)` passed
$DIR/src/os/os_test.go: `checkSize(t, f, 0)` passed
$DIR/src/os/os_test.go: `f.Write([]byte("hello, world\n"))` failed
$DIR/src/os/os_test.go: `checkSize(t, f, 13)` passed
$DIR/src/os/os_test.go: `f.Truncate(10)` failed
$DIR/src/os/os_test.go: `checkSize(t, f, 10)` passed
$DIR/src/os/os_test.go: `f.Truncate(1024)` failed
$DIR/src/os/os_test.go: `checkSize(t, f, 1024)` passed
$DIR/src/os/os_test.go: `f.Truncate(0)` failed
$DIR/src/os/os_test.go: `checkSize(t, f, 0)` passed
$DIR/src/os/os_test.go: `checkSize(t, f, 13+9)` passed
$DIR/src/os/os_test.go: `checkSize(t, f, 0)` passed
$DIR/src/os/os_test.go: `f.Write([]byte("hello, world\n"))` failed
$DIR/src/os/os_test.go: `checkSize(t, f, 13)` passed
$DIR/src/os/os_test.go: `Truncate(f.Name(), 10)` failed
$DIR/src/os/os_test.go: `checkSize(t, f, 10)` passed
$DIR/src/os/os_test.go: `Truncate(f.Name(), 1024)` failed
$DIR/src/os/os_test.go: `checkSize(t, f, 1024)` passed
$DIR/src/os/os_test.go: `Truncate(f.Name(), 0)` failed
$DIR/src/os/os_test.go: `checkSize(t, f, 0)` passed
$DIR/src/os/os_test.go: `checkSize(t, f, 13+9)` passed
$DIR/src/os/os_test.go: `t.Helper()` passed
$DIR/src/os/os_test.go: `assertPathError(t, path, err)` passed
$DIR/src/os/os_test.go: `_, err = Stat(path)` passed
$DIR/src/os/os_test.go: `f.Write([]byte("hello, world\n"))` passed
$DIR/src/os/os_test.go: `err = file.Close()` passed
$DIR/src/os/os_test.go: `startAtime = startAtime.Truncate(time.Second)` passed
$DIR/src/os/os_test.go: `startMtime = startMtime.Truncate(time.Second)` passed
$DIR/src/os/os_test.go: `fs, err = Stat(fName)` failed
$DIR/src/os/os_test.go: `at0 = Atime(fs)` failed
$DIR/src/os/os_test.go: `mt0 = fs.ModTime()` failed
$DIR/src/os/os_test.go: `mounts, err = ReadFile("/etc/mtab")` passed
$DIR/src/os/os_test.go: `dirs = []string{"/system/bin"}` passed
$DIR/src/os/os_test.go: `dirs = []string{"/", "/usr"}` passed
$DIR/src/os/os_test.go: `dirs = nil` passed
$DIR/src/os/os_test.go: `dir, err = filepath.EvalSymlinks(dir)` passed
$DIR/src/os/os_test.go: `dirs = append(dirs, dir)` passed
$DIR/src/os/os_test.go: `err = Chdir(d)` failed
$DIR/src/os/os_test.go: `err = fd1.Chdir()` failed
$DIR/src/os/os_test.go: `Setenv("PWD", "/tmp")` failed
$DIR/src/os/os_test.go: `Setenv("PWD", oldwd)` passed
$DIR/src/os/os_test.go: `fmt.Fprintf(Stderr, "fchdir back to dot failed: %s\n", err2)` passed
$DIR/src/os/os_test.go: `Exit(1)` passed
$DIR/src/os/os_test.go: `io.WriteString(f, data)` failed
$DIR/src/os/os_test.go: `_, err = r.Seek(0, 0)` failed
$DIR/src/os/os_test.go: `_, err = w.Seek(0, 0)` passed
$DIR/src/os/os_test.go: `testWindowsHostname(t, hostname)` passed
$DIR/src/os/os_test.go: `testenv.MustHaveExec(t)` passed
$DIR/src/os/os_test.go: `io.WriteString(f, data)` failed
$DIR/src/os/os_test.go: `io.WriteString(f, data)` failed
$DIR/src/os/os_test.go: `f.Seek(0, 0)` failed
$DIR/src/os/os_test.go: `n, err = f.Read(b)` failed
$DIR/src/os/os_test.go: `io.WriteString(f, data)` passed
$DIR/src/os/os_test.go: `f.Seek(0, 0)` passed
$DIR/src/os/os_test.go: `io.WriteString(f, data)` failed
$DIR/src/os/os_test.go: `_, err = f.WriteAt([]byte(""), 1)` failed
$DIR/src/os/os_test.go: `s = writeFile(t, f, O_APPEND|O_RDWR, "|append")` failed
$DIR/src/os/os_test.go: `s = writeFile(t, f, O_CREATE|O_APPEND|O_RDWR, "|append")` failed
$DIR/src/os/os_test.go: `s = writeFile(t, f, O_CREATE|O_APPEND|O_RDWR, "new&append")` failed
$DIR/src/os/os_test.go: `s = writeFile(t, f, O_CREATE|O_RDWR, "old")` failed
$DIR/src/os/os_test.go: `s = writeFile(t, f, O_CREATE|O_TRUNC|O_RDWR, "new")` failed
$DIR/src/os/os_test.go: `path += "/"` passed
$DIR/src/os/os_test.go: `testDevNullFile(t, DevNull)` passed
$DIR/src/os/os_test.go: `testDevNullFile(t, "./nul")` passed
$DIR/src/os/os_test.go: `testDevNullFile(t, "//./nul")` passed
$DIR/src/os/os_test.go: `b[i] = '.'` passed
$DIR/src/os/os_test.go: `b[len(b)-1] = '\n'` passed
$DIR/src/os/os_test.go: `n, err = Stderr.Write(b)` passed
$DIR/src/os/os_test.go: `fmt.Println(st.Mode() & ModeNamedPipe)` failed
$DIR/src/os/os_test.go: `Exit(0)` timed-out
$DIR/src/os/os_test.go: `testenv.MustHaveExec(t)` passed
$DIR/src/os/os_test.go: `cmd = testenv.CleanCmdEnv(cmd)` passed
$DIR/src/os/os_test.go: `cmd.Env = append(cmd.Env, "GO_WANT_HELPER_PROCESS=1")` timed-out
$DIR/src/os/os_test.go: `cmd.Stdin = strings.NewReader("output")` failed
$DIR/src/os/os_test.go: `testenv.MustHaveSymlink(t)` passed
$DIR/src/os/os_test.go: `err = Symlink(filepath.Base(target), link)` failed
$DIR/src/os/os_test.go: `Remove(link)` passed
$DIR/src/os/os_test.go: `err = Symlink(target[len(filepath.VolumeName(target)):], link)` passed
$DIR/src/os/os_test.go: `tmpdir += "/dir3456789"` timed-out
$DIR/src/os/os_test.go: `t.Run(fmt.Sprintf("length=%d", sz), func(t *testing.T) {
			sizedTempDir := tmpdir[:sz-1] + "x" // Ensure it does not end with a slash.

			// The various sized runs are for this call to trigger the boundary
			// condition.
			if err := MkdirAll(sizedTempDir, 0755); err != nil {
				t.Fatalf("MkdirAll failed: %v", err)
			}
			data := []byte("hello world\n")
			if err := WriteFile(sizedTempDir+"/foo.txt", data, 0644); err != nil {
				t.Fatalf("os.WriteFile() failed: %v", err)
			}
			if err := Rename(sizedTempDir+"/foo.txt", sizedTempDir+"/bar.txt"); err != nil {
				t.Fatalf("Rename failed: %v", err)
			}
			mtime := time.Now().Truncate(time.Minute)
			if err := Chtimes(sizedTempDir+"/bar.txt", mtime, mtime); err != nil {
				t.Fatalf("Chtimes failed: %v", err)
			}
			names := []string{"bar.txt"}
			if testenv.HasSymlink() {
				if err := Symlink(sizedTempDir+"/bar.txt", sizedTempDir+"/symlink.txt"); err != nil {
					t.Fatalf("Symlink failed: %v", err)
				}
				names = append(names, "symlink.txt")
			}
			if testenv.HasLink() {
				if err := Link(sizedTempDir+"/bar.txt", sizedTempDir+"/link.txt"); err != nil {
					t.Fatalf("Link failed: %v", err)
				}
				names = append(names, "link.txt")
			}
			for _, wantSize := range []int64{int64(len(data)), 0} {
				for _, name := range names {
					path := sizedTempDir + "/" + name
					dir, err := Stat(path)
					if err != nil {
						t.Fatalf("Stat(%q) failed: %v", path, err)
					}
					filesize := size(path, t)
					if dir.Size() != filesize || filesize != wantSize {
						t.Errorf("Size(%q) is %d, len(ReadFile()) is %d, want %d", path, dir.Size(), filesize, wantSize)
					}
					if runtime.GOOS != "wasip1" { // Chmod is not supported on wasip1
						err = Chmod(path, dir.Mode())
						if err != nil {
							t.Fatalf("Chmod(%q) failed: %v", path, err)
						}
					}
				}
				if err := Truncate(sizedTempDir+"/bar.txt", 0); err != nil {
					t.Fatalf("Truncate failed: %v", err)
				}
			}
		})` passed
$DIR/src/os/os_test.go: `names = append(names, "symlink.txt")` passed
$DIR/src/os/os_test.go: `names = append(names, "link.txt")` passed
$DIR/src/os/os_test.go: `err = Chmod(path, dir.Mode())` passed
$DIR/src/os/os_test.go: `fmt.Print(Getppid())` failed
$DIR/src/os/os_test.go: `Exit(0)` timed-out
$DIR/src/os/os_test.go: `testenv.MustHaveExec(t)` passed
$DIR/src/os/os_test.go: `cmd.Env = append(Environ(), "GO_WANT_HELPER_PROCESS=1")` timed-out
$DIR/src/os/os_test.go: `err = p2.Kill()` timed-out
$DIR/src/os/os_test.go: `threads = 50` passed
$DIR/src/os/os_test.go: `r[i] = rp` failed
$DIR/src/os/os_test.go: `w[i] = wp` timed-out
$DIR/src/os/os_test.go: `creading <- true` timed-out
$DIR/src/os/os_test.go: `cdone <- true` timed-out
$DIR/src/os/os_test.go: `<-creading` passed
$DIR/src/os/os_test.go: `<-cdone` passed
$DIR/src/os/os_test.go: `t.Run("file", testDoubleCloseError(filepath.Join(sfdir, sfname)))` passed
$DIR/src/os/os_test.go: `f, err = OpenFile(name, O_WRONLY|O_CREATE|O_TRUNC, 0)` failed
$DIR/src/os/os_test.go: `_, err = d.Open(`testdata\dirfs`)` passed
$DIR/src/os/os_test.go: `_, err = d.Open(`NUL`)` passed
$DIR/src/os/os_test.go: `cwd = cwd[len(filepath.VolumeName(cwd)):]` passed
$DIR/src/os/os_test.go: `cwd = filepath.ToSlash(cwd)` passed
$DIR/src/os/os_test.go: `cwd = strings.TrimPrefix(cwd, "/")` failed
$DIR/src/os/os_test.go: `f.WriteString("I will not allocate when passed a string longer than 32 bytes.\n")` passed
$DIR/src/os/os_test.go: `c <- r.Close()` timed-out
$DIR/src/os/os_test.go: `c <- w.Close()` timed-out
$DIR/src/os/os_test.go: `wg.Add(2)` failed
$DIR/src/os/os_test.go: `go f()` timed-out
$DIR/src/os/os_test.go: `go f()` timed-out
$DIR/src/os/os_test.go: `nils++` failed
$DIR/src/os/os_test.go: `errs++` failed
$DIR/src/os/os_test.go: `.Copy(io.Discard, Stdin)` nonbuildable
$DIR/src/os/os_test.go: `.SetFlags(log.LstdFlags | log.Lshortfile)` nonbuildable
$DIR/src/os/os_test.go: `.Run()` nonbuildable
$DIR/src/os/os_test.go: `.Name()` nonbuildable
$DIR/src/os/os_test.go: `.Size()` nonbuildable
$DIR/src/os/os_test.go: `.MustHaveSymlink(t)` nonbuildable
$DIR/src/os/os_test.go: `.MustHaveSymlink(t)` nonbuildable
$DIR/src/os/os_test.go: `.Stat()` nonbuildable
$DIR/src/os/os_test.go: `.Name()` nonbuildable
$DIR/src/os/os_test.go: `.Size()` nonbuildable
$DIR/src/os/os_test.go: `.Name()` nonbuildable
$DIR/src/os/os_test.go: `.Mode()` nonbuildable
$DIR/src/os/os_test.go: `.Size()` nonbuildable
$DIR/src/os/os_test.go: `.Read(b)` nonbuildable
$DIR/src/os/os_test.go: `.Read(b)` nonbuildable
$DIR/src/os/os_test.go: `.Read(b)` nonbuildable
$DIR/src/os/os_test.go: `.Run(".", testReaddirnames(".", dot))` nonbuildable
$DIR/src/os/os_test.go: `.Run("sysdir", testReaddirnames(sysdir.name, sysdir.files))` nonbuildable
$DIR/src/os/os_test.go: `.TempDir()` nonbuildable
$DIR/src/os/os_test.go: `.Run(".", testReaddir(".", dot))` nonbuildable
$DIR/src/os/os_test.go: `.Run("sysdir", testReaddir(sysdir.name, sysdir.files))` nonbuildable
$DIR/src/os/os_test.go: `.TempDir()` nonbuildable
$DIR/src/os/os_test.go: `.Run(".", testReadDir(".", dot))` nonbuildable
$DIR/src/os/os_test.go: `.Run("sysdir", testReadDir(sysdir.name, sysdir.files))` nonbuildable
$DIR/src/os/os_test.go: `.TempDir()` nonbuildable
$DIR/src/os/os_test.go: `.Readdirnames(-1)` nonbuildable
$DIR/src/os/os_test.go: `.Short()` nonbuildable
$DIR/src/os/os_test.go: `.TempDir()` nonbuildable
$DIR/src/os/os_test.go: `.Join(dir, fmt.Sprintf("%d", i))` nonbuildable
$DIR/src/os/os_test.go: `.Sprintf("%d", i)` nonbuildable
$DIR/src/os/os_test.go: `.Write([]byte(strings.Repeat("X", i)))` nonbuildable
$DIR/src/os/os_test.go: `.Repeat("X", i)` nonbuildable
$DIR/src/os/os_test.go: `.Helper()` nonbuildable
$DIR/src/os/os_test.go: `.Readdir(n)` nonbuildable
$DIR/src/os/os_test.go: `.Helper()` nonbuildable
$DIR/src/os/os_test.go: `.ReadDir(n)` nonbuildable
$DIR/src/os/os_test.go: `.Helper()` nonbuildable
$DIR/src/os/os_test.go: `.Readdirnames(n)` nonbuildable
$DIR/src/os/os_test.go: `.HasSuffix(path, "x")` nonbuildable
$DIR/src/os/os_test.go: `.TempDir()` nonbuildable
$DIR/src/os/os_test.go: `.Join(dir, "good1")` nonbuildable
$DIR/src/os/os_test.go: `.Join(dir, "x")` nonbuildable
$DIR/src/os/os_test.go: `.Join(dir, "good2")` nonbuildable
$DIR/src/os/os_test.go: `.Readdir(-1)` nonbuildable
$DIR/src/os/os_test.go: `.Name()` nonbuildable
$DIR/src/os/os_test.go: `.Strings(s)` nonbuildable
$DIR/src/os/os_test.go: `.DeepEqual(got, want)` nonbuildable
$DIR/src/os/os_test.go: `.DeepEqual(got, want)` nonbuildable
$DIR/src/os/os_test.go: `.New("some real error")` nonbuildable
$DIR/src/os/os_test.go: `.TempDir()` nonbuildable
$DIR/src/os/os_test.go: `.Write([]byte("foo"))` nonbuildable
$DIR/src/os/os_test.go: `.Name()` nonbuildable
$DIR/src/os/os_test.go: `.Readdirnames(-1)` nonbuildable
$DIR/src/os/os_test.go: `.As(err, &pe)` nonbuildable
$DIR/src/os/os_test.go: `.Name()` nonbuildable
$DIR/src/os/os_test.go: `.MustHaveLink(t)` nonbuildable
$DIR/src/os/os_test.go: `.MustHaveSymlink(t)` nonbuildable
$DIR/src/os/os_test.go: `.Mode()` nonbuildable
$DIR/src/os/os_test.go: `.Mode()` nonbuildable
$DIR/src/os/os_test.go: `.Name()` nonbuildable
$DIR/src/os/os_test.go: `.Mode()` nonbuildable
$DIR/src/os/os_test.go: `.MustHaveSymlink(t)` nonbuildable
$DIR/src/os/os_test.go: `.Size()` nonbuildable
$DIR/src/os/os_test.go: `.Run(test.name, func(t *testing.T) {
			defer chtmpdir(t)()

			if err := test.create(); err != nil {
				t.Fatalf("failed to create test file: %s", err)
			}

			if _, err := Stat(to); err != nil {
				// Sanity check that the underlying filesystem is not case sensitive.
				if IsNotExist(err) {
					t.Skipf("case sensitive filesystem")
				}
				t.Fatalf("stat %q, got: %q", to, err)
			}

			if err := Rename(from, to); err != nil {
				t.Fatalf("unexpected error when renaming from %q to %q: %s", from, to, err)
			}

			fd, err := Open(".")
			if err != nil {
				t.Fatalf("Open .: %s", err)
			}

			// Stat does not return the real case of the file (it returns what the called asked for)
			// So we have to use readdir to get the real name of the file.
			dirNames, err := fd.Readdirnames(-1)
			fd.Close()
			if err != nil {
				t.Fatalf("readdirnames: %s", err)
			}

			if dirNamesLen := len(dirNames); dirNamesLen != 1 {
				t.Fatalf("unexpected dirNames len, got %q, want %q", dirNamesLen, 1)
			}

			if dirNames[0] != to {
				t.Errorf("unexpected name, got %q, want %q", dirNames[0], to)
			}
		})` nonbuildable
$DIR/src/os/os_test.go: `.create()` nonbuildable
$DIR/src/os/os_test.go: `.Readdirnames(-1)` nonbuildable
$DIR/src/os/os_test.go: `.MustHaveExec(t)` nonbuildable
$DIR/src/os/os_test.go: `.LookPath("pwd")` nonbuildable
$DIR/src/os/os_test.go: `.Split(cmd)` nonbuildable
$DIR/src/os/os_test.go: `.Run("absolute", testStartProcess(dir, cmd, args, dir))` nonbuildable
$DIR/src/os/os_test.go: `.Name()` nonbuildable
$DIR/src/os/os_test.go: `.Name()` nonbuildable
$DIR/src/os/os_test.go: `.Name()` nonbuildable
$DIR/src/os/os_test.go: `.Chmod(fm)` nonbuildable
$DIR/src/os/os_test.go: `.Name()` nonbuildable
$DIR/src/os/os_test.go: `.Name()` nonbuildable
$DIR/src/os/os_test.go: `.Write([]byte("hello, world\n"))` nonbuildable
$DIR/src/os/os_test.go: `.Truncate(10)` nonbuildable
$DIR/src/os/os_test.go: `.Truncate(1024)` nonbuildable
$DIR/src/os/os_test.go: `.Truncate(0)` nonbuildable
$DIR/src/os/os_test.go: `.Write([]byte("surprise!"))` nonbuildable
$DIR/src/os/os_test.go: `.Name()` nonbuildable
$DIR/src/os/os_test.go: `.Write([]byte("hello, world\n"))` nonbuildable
$DIR/src/os/os_test.go: `.Name()` nonbuildable
$DIR/src/os/os_test.go: `.Name()` nonbuildable
$DIR/src/os/os_test.go: `.Name()` nonbuildable
$DIR/src/os/os_test.go: `.Write([]byte("surprise!"))` nonbuildable
$DIR/src/os/os_test.go: `.Helper()` nonbuildable
$DIR/src/os/os_test.go: `.Join(t.TempDir(), "nonexistent")` nonbuildable
$DIR/src/os/os_test.go: `.TempDir()` nonbuildable
$DIR/src/os/os_test.go: `.Name()` nonbuildable
$DIR/src/os/os_test.go: `.Write([]byte("hello, world\n"))` nonbuildable
$DIR/src/os/os_test.go: `.Name()` nonbuildable
$DIR/src/os/os_test.go: `.Write([]byte("hello, world\n"))` nonbuildable
$DIR/src/os/os_test.go: `.Name()` nonbuildable
$DIR/src/os/os_test.go: `.Name()` nonbuildable
$DIR/src/os/os_test.go: `.ModTime()` nonbuildable
$DIR/src/os/os_test.go: `.Truncate(time.Second)` nonbuildable
$DIR/src/os/os_test.go: `.Truncate(time.Second)` nonbuildable
$DIR/src/os/os_test.go: `.Truncate(time.Second)` passed
$DIR/src/os/os_test.go: `.Add(1 * time.Hour)` passed
$DIR/src/os/os_test.go: `.Add(200 * time.Second)` failed
$DIR/src/os/os_test.go: `.Add(200 * time.Second)` failed
$DIR/src/os/os_test.go: `.Add(100 * time.Second)` failed
$DIR/src/os/os_test.go: `.Add(200 * time.Second)` failed
$DIR/src/os/os_test.go: `.Add(100 * time.Second)` failed
$DIR/src/os/os_test.go: `.Add(300 * time.Second)` failed
$DIR/src/os/os_test.go: `.Add(100 * time.Second)` failed
$DIR/src/os/os_test.go: `.Add(300 * time.Second)` failed
$DIR/src/os/os_test.go: `.Add(100 * time.Second)` failed
$DIR/src/os/os_test.go: `.ModTime()` nonbuildable
$DIR/src/os/os_test.go: `.Equal(want)` nonbuildable
$DIR/src/os/os_test.go: `.Sprintf("AccessTime mismatch with values ATime:%q-MTime:%q\ngot:  %q\nwant: %q", tt.aTime, tt.mTime, got, want)` nonbuildable
$DIR/src/os/os_test.go: `.Equal(want)` nonbuildable
$DIR/src/os/os_test.go: `.Contains(string(mounts), "noatime")` nonbuildable
$DIR/src/os/os_test.go: `.Contains(runtime.GOARCH, "64")` nonbuildable
$DIR/src/os/os_test.go: `.Equal(want)` nonbuildable
$DIR/src/os/os_test.go: `.Sprintf("ModTime mismatch with values ATime:%q-MTime:%q\ngot:  %q\nwant: %q", tt.aTime, tt.mTime, got, want)` nonbuildable
$DIR/src/os/os_test.go: `.Name()` nonbuildable
$DIR/src/os/os_test.go: `.Write([]byte("hi"))` nonbuildable
$DIR/src/os/os_test.go: `.Unix(0, 0)` nonbuildable
$DIR/src/os/os_test.go: `.ModTime()` nonbuildable
$DIR/src/os/os_test.go: `.Chdir()` nonbuildable
$DIR/src/os/os_test.go: `.Stat()` nonbuildable
$DIR/src/os/os_test.go: `.TempDir()` nonbuildable
$DIR/src/os/os_test.go: `.TempDir()` nonbuildable
$DIR/src/os/os_test.go: `.EvalSymlinks(dir)` nonbuildable
$DIR/src/os/os_test.go: `.Chdir()` nonbuildable
$DIR/src/os/os_test.go: `.Chdir()` nonbuildable
$DIR/src/os/os_test.go: `.Fprintf(Stderr, "fchdir back to dot failed: %s\n", err2)` nonbuildable
$DIR/src/os/os_test.go: `.Name()` nonbuildable
$DIR/src/os/os_test.go: `.WriteString(f, data)` nonbuildable
$DIR/src/os/os_test.go: `.Seek(tt.in, tt.whence)` nonbuildable
$DIR/src/os/os_test.go: `.Contains(string(mounts), "reiserfs")` nonbuildable
$DIR/src/os/os_test.go: `.Seek(0, 0)` nonbuildable
$DIR/src/os/os_test.go: `.Seek(0, 0)` nonbuildable
$DIR/src/os/os_test.go: `.Replace(tt.error.Error(), "file ", "", 1)` nonbuildable
$DIR/src/os/os_test.go: `.HasSuffix(syscallErrStr, expectedErrStr)` nonbuildable
$DIR/src/os/os_test.go: `.HasSuffix(syscallErrStr, syscall.EACCES.Error())` nonbuildable
$DIR/src/os/os_test.go: `.Contains(hostname, "\x00")` nonbuildable
$DIR/src/os/os_test.go: `.MustHaveExec(t)` nonbuildable
$DIR/src/os/os_test.go: `.Cut(hostname, ".")` nonbuildable
$DIR/src/os/os_test.go: `.Name()` nonbuildable
$DIR/src/os/os_test.go: `.WriteString(f, data)` nonbuildable
$DIR/src/os/os_test.go: `.ReadAt(b, 7)` nonbuildable
$DIR/src/os/os_test.go: `.Name()` nonbuildable
$DIR/src/os/os_test.go: `.WriteString(f, data)` nonbuildable
$DIR/src/os/os_test.go: `.Seek(0, 0)` nonbuildable
$DIR/src/os/os_test.go: `.ReadAt(b, 7)` nonbuildable
$DIR/src/os/os_test.go: `.Read(b)` nonbuildable
$DIR/src/os/os_test.go: `.Name()` nonbuildable
$DIR/src/os/os_test.go: `.WriteString(f, data)` nonbuildable
$DIR/src/os/os_test.go: `.Seek(0, 0)` nonbuildable
$DIR/src/os/os_test.go: `.ReadAt(b, -10)` nonbuildable
$DIR/src/os/os_test.go: `.Contains(fmt.Sprint(err), wantsub)` nonbuildable
$DIR/src/os/os_test.go: `.Sprint(err)` nonbuildable
$DIR/src/os/os_test.go: `.Name()` nonbuildable
$DIR/src/os/os_test.go: `.WriteString(f, data)` nonbuildable
$DIR/src/os/os_test.go: `.WriteAt([]byte("WORLD"), 7)` nonbuildable
$DIR/src/os/os_test.go: `.Name()` nonbuildable
$DIR/src/os/os_test.go: `.Name()` nonbuildable
$DIR/src/os/os_test.go: `.WriteAt([]byte("WORLD"), -10)` nonbuildable
$DIR/src/os/os_test.go: `.Contains(fmt.Sprint(err), wantsub)` nonbuildable
$DIR/src/os/os_test.go: `.Sprint(err)` nonbuildable
$DIR/src/os/os_test.go: `.WriteAt([]byte(""), 1)` nonbuildable
$DIR/src/os/os_test.go: `.TempDir()` nonbuildable
$DIR/src/os/os_test.go: `.String()` nonbuildable
$DIR/src/os/os_test.go: `.Write(b)` nonbuildable
$DIR/src/os/os_test.go: `.Write(b)` nonbuildable
$DIR/src/os/os_test.go: `.TempDir()` nonbuildable
$DIR/src/os/os_test.go: `.Mode()` nonbuildable
$DIR/src/os/os_test.go: `.Stat()` nonbuildable
$DIR/src/os/os_test.go: `.Println(st.Mode() & ModeNamedPipe)` nonbuildable
$DIR/src/os/os_test.go: `.Mode()` nonbuildable
$DIR/src/os/os_test.go: `.MustHaveExec(t)` nonbuildable
$DIR/src/os/os_test.go: `.Stat()` nonbuildable
$DIR/src/os/os_test.go: `.Mode()` nonbuildable
$DIR/src/os/os_test.go: `.Command(t, exe, "-test.run=^TestStatStdin$")` nonbuildable
$DIR/src/os/os_test.go: `.CleanCmdEnv(cmd)` nonbuildable
$DIR/src/os/os_test.go: `.NewReader("output")` nonbuildable
$DIR/src/os/os_test.go: `.CombinedOutput()` nonbuildable
$DIR/src/os/os_test.go: `.MustHaveSymlink(t)` nonbuildable
$DIR/src/os/os_test.go: `.TempDir()` nonbuildable
$DIR/src/os/os_test.go: `.Join(tmpdir, "target")` nonbuildable
$DIR/src/os/os_test.go: `.Stat()` nonbuildable
$DIR/src/os/os_test.go: `.Join(tmpdir, "link")` nonbuildable
$DIR/src/os/os_test.go: `.Base(target)` nonbuildable
$DIR/src/os/os_test.go: `.VolumeName(target)` nonbuildable
$DIR/src/os/os_test.go: `.Name()` nonbuildable
$DIR/src/os/os_test.go: `.ReadAt(make([]byte, 10), 0)` nonbuildable
$DIR/src/os/os_test.go: `.Run(fmt.Sprintf("length=%d", sz), func(t *testing.T) {
			sizedTempDir := tmpdir[:sz-1] + "x" // Ensure it does not end with a slash.

			// The various sized runs are for this call to trigger the boundary
			// condition.
			if err := MkdirAll(sizedTempDir, 0755); err != nil {
				t.Fatalf("MkdirAll failed: %v", err)
			}
			data := []byte("hello world\n")
			if err := WriteFile(sizedTempDir+"/foo.txt", data, 0644); err != nil {
				t.Fatalf("os.WriteFile() failed: %v", err)
			}
			if err := Rename(sizedTempDir+"/foo.txt", sizedTempDir+"/bar.txt"); err != nil {
				t.Fatalf("Rename failed: %v", err)
			}
			mtime := time.Now().Truncate(time.Minute)
			if err := Chtimes(sizedTempDir+"/bar.txt", mtime, mtime); err != nil {
				t.Fatalf("Chtimes failed: %v", err)
			}
			names := []string{"bar.txt"}
			if testenv.HasSymlink() {
				if err := Symlink(sizedTempDir+"/bar.txt", sizedTempDir+"/symlink.txt"); err != nil {
					t.Fatalf("Symlink failed: %v", err)
				}
				names = append(names, "symlink.txt")
			}
			if testenv.HasLink() {
				if err := Link(sizedTempDir+"/bar.txt", sizedTempDir+"/link.txt"); err != nil {
					t.Fatalf("Link failed: %v", err)
				}
				names = append(names, "link.txt")
			}
			for _, wantSize := range []int64{int64(len(data)), 0} {
				for _, name := range names {
					path := sizedTempDir + "/" + name
					dir, err := Stat(path)
					if err != nil {
						t.Fatalf("Stat(%q) failed: %v", path, err)
					}
					filesize := size(path, t)
					if dir.Size() != filesize || filesize != wantSize {
						t.Errorf("Size(%q) is %d, len(ReadFile()) is %d, want %d", path, dir.Size(), filesize, wantSize)
					}
					if runtime.GOOS != "wasip1" { // Chmod is not supported on wasip1
						err = Chmod(path, dir.Mode())
						if err != nil {
							t.Fatalf("Chmod(%q) failed: %v", path, err)
						}
					}
				}
				if err := Truncate(sizedTempDir+"/bar.txt", 0); err != nil {
					t.Fatalf("Truncate failed: %v", err)
				}
			}
		})` nonbuildable
$DIR/src/os/os_test.go: `.Sprintf("length=%d", sz)` nonbuildable
$DIR/src/os/os_test.go: `.Now()` nonbuildable
$DIR/src/os/os_test.go: `.Truncate(time.Minute)` passed
$DIR/src/os/os_test.go: `.HasSymlink()` nonbuildable
$DIR/src/os/os_test.go: `.HasLink()` nonbuildable
$DIR/src/os/os_test.go: `.Size()` nonbuildable
$DIR/src/os/os_test.go: `.Mode()` nonbuildable
$DIR/src/os/os_test.go: `.Kill()` timed-out
$DIR/src/os/os_test.go: `.Print(Getppid())` nonbuildable
$DIR/src/os/os_test.go: `.MustHaveExec(t)` nonbuildable
$DIR/src/os/os_test.go: `.Command(t, Args[0], "-test.run=^TestGetppid$")` nonbuildable
$DIR/src/os/os_test.go: `.CombinedOutput()` nonbuildable
$DIR/src/os/os_test.go: `.Sprintf("%d", Getpid())` nonbuildable
$DIR/src/os/os_test.go: `.Kill()` nonbuildable
$DIR/src/os/os_test.go: `.f(file)` nonbuildable
$DIR/src/os/os_test.go: `.SetMaxThreads(debug.SetMaxThreads(threads / 2))` nonbuildable
$DIR/src/os/os_test.go: `.SetMaxThreads(threads / 2)` nonbuildable
$DIR/src/os/os_test.go: `.Read(b[:])` nonbuildable
$DIR/src/os/os_test.go: `.Write([]byte{0})` nonbuildable
$DIR/src/os/os_test.go: `.Run("file", testDoubleCloseError(filepath.Join(sfdir, sfname)))` nonbuildable
$DIR/src/os/os_test.go: `.Join(sfdir, sfname)` nonbuildable
$DIR/src/os/os_test.go: `.IsDir()` nonbuildable
$DIR/src/os/os_test.go: `.IsDir()` nonbuildable
$DIR/src/os/os_test.go: `.IsDir()` nonbuildable
$DIR/src/os/os_test.go: `.Readdirnames(0)` nonbuildable
$DIR/src/os/os_test.go: `.Seek(0, 0)` nonbuildable
$DIR/src/os/os_test.go: `.Readdirnames(0)` nonbuildable
$DIR/src/os/os_test.go: `.Join(wd, "testdata", "issue37161")` nonbuildable
$DIR/src/os/os_test.go: `.Readdirnames(1)` nonbuildable
$DIR/src/os/os_test.go: `.Seek(0, 0)` nonbuildable
$DIR/src/os/os_test.go: `.Readdirnames(0)` nonbuildable
$DIR/src/os/os_test.go: `.TempDir()` nonbuildable
$DIR/src/os/os_test.go: `.Join(dir, "x")` nonbuildable
$DIR/src/os/os_test.go: `.Stat()` nonbuildable
$DIR/src/os/os_test.go: `.Mode()` nonbuildable
$DIR/src/os/os_test.go: `.Mode()` nonbuildable
$DIR/src/os/os_test.go: `.WalkDir("./testdata/dirfs", func(path string, d fs.DirEntry, err error) error {
			if err != nil {
				t.Fatal(err)
			}
			info, err := d.Info()
			if err != nil {
				t.Fatal(err)
			}
			stat, err := Stat(path) // This uses GetFileInformationByHandle internally.
			if err != nil {
				t.Fatal(err)
			}
			if stat.ModTime() == info.ModTime() {
				return nil
			}
			if err := Chtimes(path, stat.ModTime(), stat.ModTime()); err != nil {
				t.Log(err) // We only log, not die, in case the test directory is not writable.
			}
			return nil
		})` nonbuildable
$DIR/src/os/os_test.go: `.Info()` nonbuildable
$DIR/src/os/os_test.go: `.ModTime()` nonbuildable
$DIR/src/os/os_test.go: `.ModTime()` nonbuildable
$DIR/src/os/os_test.go: `.ModTime()` nonbuildable
$DIR/src/os/os_test.go: `.ModTime()` nonbuildable
$DIR/src/os/os_test.go: `.TestFS(fsys, "a", "b", "dir/x")` nonbuildable
$DIR/src/os/os_test.go: `.ReadDir("nonexistent")` nonbuildable
$DIR/src/os/os_test.go: `.Open(nonesuch)` nonbuildable
$DIR/src/os/os_test.go: `.Contains(err.Error(), nonesuch)` nonbuildable
$DIR/src/os/os_test.go: `.Contains(err.(*PathError).Path, "testdata")` nonbuildable
$DIR/src/os/os_test.go: `.Open(`testdata\dirfs`)` nonbuildable
$DIR/src/os/os_test.go: `.Open(`NUL`)` nonbuildable
$DIR/src/os/os_test.go: `.VolumeName(cwd)` nonbuildable
$DIR/src/os/os_test.go: `.ToSlash(cwd)` nonbuildable
$DIR/src/os/os_test.go: `.TrimPrefix(cwd, "/")` nonbuildable
$DIR/src/os/os_test.go: `.Open(cwd + "/testdata/dirfs/a")` nonbuildable
$DIR/src/os/os_test.go: `.ToSlash(cwd)` nonbuildable
$DIR/src/os/os_test.go: `.Open(path)` nonbuildable
$DIR/src/os/os_test.go: `.TempDir()` nonbuildable
$DIR/src/os/os_test.go: `.Join(d, "control.txt")` nonbuildable
$DIR/src/os/os_test.go: `.Join(d, `e:xperi\ment.txt`)` nonbuildable
$DIR/src/os/os_test.go: `.WalkDir(fsys, ".", func(path string, e fs.DirEntry, err error) error {
		if fs.ValidPath(e.Name()) {
			t.Logf("%q ok", e.Name())
		} else {
			t.Errorf("%q INVALID", e.Name())
		}
		return nil
	})` nonbuildable
$DIR/src/os/os_test.go: `.ValidPath(e.Name())` nonbuildable
$DIR/src/os/os_test.go: `.Name()` nonbuildable
$DIR/src/os/os_test.go: `.Stat(fsys, name)` nonbuildable
$DIR/src/os/os_test.go: `.ReadFile(fsys, name)` nonbuildable
$DIR/src/os/os_test.go: `.TempDir()` nonbuildable
$DIR/src/os/os_test.go: `.Join(d, "whiteboard.txt")` nonbuildable
$DIR/src/os/os_test.go: `.AllocsPerRun(100, func() {
		f.WriteString("I will not allocate when passed a string longer than 32 bytes.\n")
	})` nonbuildable
$DIR/src/os/os_test.go: `.WriteString("I will not allocate when passed a string longer than 32 bytes.\n")` nonbuildable
$DIR/src/os/os_test.go: `.Done()` nonbuildable
$DIR/src/os/os_test.go: `.Add(2)` nonbuildable
$DIR/src/os/os_test.go: `.TempDir()` nonbuildable
$DIR/src/os/os_test.go: `.Base(dir)` nonbuildable
$DIR/src/os/os_test.go: `.TempDir()` nonbuildable
$DIR/src/os/os_test.go: `.Base(f.Name())` nonbuildable
$DIR/src/os/os_test.go: `.Name()` nonbuildable