libgo: update to Go 1.14.4 release

Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/241999

1 files changed, 35 insertions, 0 deletions

diff --git a/libgo/go/os/os_test.go b/libgo/go/os/os_test.go
index a19b46d..8ec6de7 100644
--- a/libgo/go/os/os_test.go
+++ b/libgo/go/os/os_test.go
@@ -2450,3 +2450,38 @@ func TestDirSeek(t *testing.T) {
 		}
 	}
 }
+
+// Test that opening a file does not change its permissions.  Issue 38225.
+func TestOpenFileKeepsPermissions(t *testing.T) {
+	t.Parallel()
+	dir, err := ioutil.TempDir("", "TestOpenFileKeepsPermissions")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer RemoveAll(dir)
+	name := filepath.Join(dir, "x")
+	f, err := Create(name)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := f.Close(); err != nil {
+		t.Error(err)
+	}
+	f, err = OpenFile(name, O_WRONLY|O_CREATE|O_TRUNC, 0)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if fi, err := f.Stat(); err != nil {
+		t.Error(err)
+	} else if fi.Mode()&0222 == 0 {
+		t.Errorf("f.Stat.Mode after OpenFile is %v, should be writable", fi.Mode())
+	}
+	if err := f.Close(); err != nil {
+		t.Error(err)
+	}
+	if fi, err := Stat(name); err != nil {
+		t.Error(err)
+	} else if fi.Mode()&0222 == 0 {
+		t.Errorf("Stat after OpenFile is %v, should be writable", fi.Mode())
+	}
+}