err := enc.Encode(bench)
		if err != nil {
			t.Fatal("encode:", err)
		}
	})
	if allocs != 0 {
		t.Fatalf("mallocs per encode of type Bench: %v; wanted 0\n", allocs)
	}
}

func TestCountDecodeMallocs(t *testing.T) {
	if testing.Short() {
		t.Skip("skipping malloc count in short mode")
	}
	if runtime.GOMAXPROCS(0) > 1 {
		t.Skip("skipping; GOMAXPROCS>1")
	}

	const N = 1000