_ = 0b111 // ERROR "binary literal requires go1.13 or later"
	_ = 0o567 // ERROR "0o/0O-style octal literal requires go1.13 or later"
	_ = 0xabc // ok
	_ = 0x0p1 // ERROR "hexadecimal floating-point literal requires go1.13 or later"

	_ = 0b111 // ERROR "binary"
	_ = 0o567 // ERROR "octal"
	_ = 0xabc // ok

// numeric literals
const (
	_ = 1_000 // ERROR "underscore in numeric literal requires go1.13 or later"
	_ = 0b111 // ERROR "binary literal requires go1.13 or later"
	_ = 0o567 // ERROR "0o/0O-style octal literal requires go1.13 or later"
	_ = 0xabc // ok
	_ = 0x0p1 // ERROR "hexadecimal floating-point literal requires go1.13 or later"

	_ = 0b111 // ERROR "binary"
	_ = 0o567 // ERROR "octal"
	_ = 0xabc // ok

	{"7", "7", 8, 7, true},
	{"023", "19", 0, 19, true},
	{"23", "23", 8, 19, true},
	{"cafebabe", "cafebabe", 16, 0xcafebabe, true},
	{"0b0", "0", 0, 0, true},
	{"-111", "-111", 2, -7, true},
	{"-0b111", "-7", 0, -7, true},
	{"0b1001010111", "599", 0, 0x257, true},
	{"1001010111", "1001010111", 2, 0x257, true},
	{"A", "a", 36, 10, true},
	{"A", "A", 37, 36, true},
	{"ABCXYZ", "abcxyz", 36, 623741435, true},

		}
	}
}

// Test to use BLSMSK, if available
func TestBLSMSK(t *testing.T) {
	for _, tt := range []struct {
		x, want uint64
	}{
		{0b00001111, 0b001},
		{0b00001110, 0b011},
		{0b00001100, 0b111},
		{0b11000110, 0b011},
		{0b00000000, 1<<64 - 1},
	} {
		if got := tt.x ^ (tt.x - 1); got != tt.want {
			t.Errorf("%#x ^ (%#x-1) = %#x, want %#x", tt.x, tt.x, got, tt.want)
		}

		{"space vs newline 0010", "1\n2", "%d \n%d", 2, true},
		{"space vs newline 0011", "1\n2", "%d \n %d", 2, true},
		{"space vs newline 0100", "1\n 2", "%d\n%d", 2, true},
		{"space vs newline 0101", "1\n 2", "%d\n%d ", 2, true},
		{"space vs newline 0110", "1\n 2", "%d \n%d", 2, true},
		{"space vs newline 0111", "1\n 2", "%d \n %d", 2, true},
		{"space vs newline 1000", "1 \n2", "%d\n%d", 2, true},

	{"%6.0d", 0, "      "},
	{"%06.0d", 0, "      "},
	{"% d", 12345, " 12345"},
	{"%+d", 12345, "+12345"},
	{"%+d", -12345, "-12345"},
	{"%b", 7, "111"},
	{"%b", -6, "-110"},
	{"%#b", 7, "0b111"},
	{"%#b", -6, "-0b110"},
	{"%b", ^uint32(0), "11111111111111111111111111111111"},
	{"%b", ^uint64(0), "1111111111111111111111111111111111111111111111111111111111111111"},
	{"%b", int64(-1 << 63), zeroFill("-1", 63, "")},

iptables -t mangle -A ISTIO_OUTPUT -m connmark --mark 0x111/0xfff -j CONNMARK --restore-mark --nfmask 0xffffffff --ctmask 0xffffffff
iptables -t nat -A ISTIO_OUTPUT ! -o lo -p udp -m udp --dport 53 -j REDIRECT --to-port 15053
iptables -t nat -A ISTIO_OUTPUT -p tcp -m mark --mark 0x111/0xfff -j ACCEPT
iptables -t nat -A ISTIO_OUTPUT ! -d 127.0.0.1/32 -o lo -j ACCEPT

iptables -t mangle -A ISTIO_OUTPUT -m connmark --mark 0x111/0xfff -j CONNMARK --restore-mark --nfmask 0xffffffff --ctmask 0xffffffff
iptables -t nat -A ISTIO_OUTPUT ! -o lo -p udp -m udp --dport 53 -j REDIRECT --to-port 15053
iptables -t nat -A ISTIO_OUTPUT -p tcp -m mark --mark 0x111/0xfff -j ACCEPT
iptables -t nat -A ISTIO_OUTPUT ! -d 127.0.0.1/32 -o lo -j ACCEPT

//     (concrete type / interface type).  This itab goes in hash bucket 0x111.
//  2. The plugin adds that same itab again.  That makes a cycle in the itab
//     chain rooted at hash bucket 0x111.
//  3. The main binary then asks for the itab for *dynamodbstreamsevt.Event /
//     json.Unmarshaler.  This itab happens to also live in bucket 0x111.
//     The lookup code goes into an infinite loop searching for this itab.
//

			},
			beforeScav: map[ChunkIdx][]BitRange{
				BaseChunkIdx: {{0, 4}, {11, 1}},
			},
			hits: []PageCache{
				NewPageCache(PageBase(BaseChunkIdx, 0), ^uint64(0x1|(0x3<<10)), 0x7<<1),
			},
			afterAlloc: map[ChunkIdx][]BitRange{
				BaseChunkIdx: {{0, 64}},
			},
			afterScav: map[ChunkIdx][]BitRange{
				BaseChunkIdx: {{0, 1}, {11, 1}},
			},
		},
	}