t.Fatalf("Prlimit self failed: %v", err)
	}

	rlimLater := origRlimitNofile.Load()
	if rlimLater != nil {
		t.Fatalf("origRlimitNofile got=%v, want=nil", rlimLater)
	}
}

func TestPrlimitOtherProcess(t *testing.T) {
	origLimit := syscall.OrigRlimitNofile()
	origRlimitNofile := syscall.GetInternalOrigRlimitNofile()

	if origLimit == nil {
		defer origRlimitNofile.Store(origLimit)