for i := range ss {
		if *ss[i] != *ss2[i] {
			t.Fatalf("ints2 mismatch at %d; %v != %v", i, *ss[i], *ss2[i])
		}
	}
}

func BenchmarkSortStructs(b *testing.B) {
	for i := 0; i < b.N; i++ {
		b.StopTimer()
		ss := makeRandomStructs(N)
		b.StartTimer()
		Sort(ss)
	}
}

func BenchmarkSortFuncStructs(b *testing.B) {