syscall: fix creds_test to reliably close os.File

Uncovered by Uros Bizjak.

Before this patch the test would close the file descriptor but
not the os.File.  When the os.File was GC'ed, the finalizer
would close the file descriptor again.  That would cause
problems if the same file descriptor were returned by a later
call to open in another test.

On my system:

> GOGC=30 go test
--- FAIL: TestPassFD (0.04 seconds)
passfd_test.go:62: 	FileConn: dup: bad file descriptor
FAIL


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@192854 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 6 insertions, 2 deletions

diff --git a/libgo/go/syscall/creds_test.go b/libgo/go/syscall/creds_test.go
index 6eaa97e57b8..b1894c66b07 100644
--- a/libgo/go/syscall/creds_test.go
+++ b/libgo/go/syscall/creds_test.go
@@ -31,14 +31,18 @@ func TestSCMCredentials(t *testing.T) {
 		t.Fatalf("SetsockoptInt: %v", err)
 	}
 
-	srv, err := net.FileConn(os.NewFile(uintptr(fds[0]), ""))
+	srvFile := os.NewFile(uintptr(fds[0]), "server")
+	defer srvFile.Close()
+	srv, err := net.FileConn(srvFile)
 	if err != nil {
 		t.Errorf("FileConn: %v", err)
 		return
 	}
 	defer srv.Close()
 
-	cli, err := net.FileConn(os.NewFile(uintptr(fds[1]), ""))
+	cliFile := os.NewFile(uintptr(fds[1]), "client")
+	defer cliFile.Close()
+	cli, err := net.FileConn(cliFile)
 	if err != nil {
 		t.Errorf("FileConn: %v", err)
 		return