b.Run(data.name, func(b *testing.B) {
			b.ReportAllocs()
			for i := 0; i < b.N; i++ {
				if _, err := Compile(data.re); err != nil {
					b.Fatal(err)
				}
			}
		})
	}
}

func TestDeepEqual(t *testing.T) {
	re1 := MustCompile("a.*b.*c.*d")
	re2 := MustCompile("a.*b.*c.*d")
	if !reflect.DeepEqual(re1, re2) { // has always been true, since Go 1.
		t.Errorf("DeepEqual(re1, re2) = false, want true")
	}

	{&loop1, &loop1, true},
	{&loop1, &loop2, true},
	{&loopy1, &loopy1, true},
	{&loopy1, &loopy2, true},
	{&cycleMap1, &cycleMap2, true},
	{&cycleMap1, &cycleMap3, false},
}

func TestDeepEqual(t *testing.T) {
	for _, test := range deepEqualTests {
		if test.b == (self{}) {
			test.b = test.a
		}
		if r := DeepEqual(test.a, test.b); r != test.eq {