_ = 0x_dead_cafe.p-10
	_ = 0x12_34.p1_2_3
	_ = 0x1_2_3_4.p-1_2_3

	// imaginaries
	_ = 0i
	_ = 0i
	_ = 8i
	_ = 0i
	_ = 123i
	_ = 123i
	_ = 56789i
	_ = 1234i
	_ = 1234567i

	_ = 0i
	_ = 0i
	_ = 8i
	_ = 0i
	_ = 123i
	_ = 123i
	_ = 56_789i
	_ = 1_234i
	_ = 1_234_567i

	_ = 0.i
	_ = 123.i
	_ = 0123.i
	_ = 000123.i

	_ = 0e0i
	_ = 123e0i

	_	= 0x_dead_cafe.p-10
	_	= 0x12_34.p1_2_3
	_	= 0x1_2_3_4.p-1_2_3

	// imaginaries
	_	= 0i
	_	= 0i
	_	= 8i
	_	= 0i
	_	= 123i
	_	= 123i
	_	= 56789i
	_	= 1234i
	_	= 1234567i

	_	= 0i
	_	= 0i
	_	= 8i
	_	= 0i
	_	= 123i
	_	= 123i
	_	= 56_789i
	_	= 1_234i
	_	= 1_234_567i

	_	= 0.i
	_	= 123.i
	_	= 0123.i
	_	= 000123.i

	_	= 0e0i
	_	= 123e0i

	assert(0x_1234P-10 == 0x1234p-10)

	assert(0X_dead_cafe.p-10 == 0xdeadcafe.p-10)
	assert(0x12_34.P1_2_3 == 0x1234.p123)

	assert(1_234i == 1234i)
	assert(1_234_567i == 1234567i)

	assert(0.i == 0i)
	assert(123.i == 123i)
	assert(0123.i == 123i)

	assert(0.e+1i == 0i)
	assert(123.E-1_0i == 123e-10i)
	assert(01_23.e123i == 123e123i)

		{"+0e-0+0e-0i", 0, nil},
		{"0e+0+0e+0i", 0, nil},
		{"-0e+0-0e+0i", 0, nil},

		// Regular non-zeroes
		{"0.1", 0.1, nil},
		{"0.1i", 0 + 0.1i, nil},
		{"0.123", 0.123, nil},
		{"0.123i", 0 + 0.123i, nil},
		{"0.123+0.123i", 0.123 + 0.123i, nil},
		{"99", 99, nil},
		{"+99", 99, nil},
		{"-99", -99, nil},
		{"+1i", 1i, nil},
		{"-1i", -1i, nil},
		{"+3+1i", 3 + 1i, nil},
		{"30+3i", 30 + 3i, nil},

const init1 = 0

func init() {}

const (
	C0  int     = 0
	C1          = 3.14159265
	C2          = 2.718281828i
	C3          = -123.456e-789
	C4          = +123.456e+789
	C5          = 1234i
	C6          = "foo\n"
	C7          = `bar\n`
	C8          = 42
	C9  int     = 42
	C10 float64 = 42
)

type (
	T1  int
	T2  [10]int
	T3  []int
	T4  *int
	T5  chan int
	T6a chan<- int

	_ = 0X_dead_cafe.p-10
	_ = 0x12_34.P1_2_3
	_ = 0X1_2_3_4.P-1_2_3

	// imaginaries
	_ = 0i
	_ = 00i
	_ = 08i
	_ = 0000000000i
	_ = 0123i
	_ = 0000000123i
	_ = 0000056789i
	_ = 1234i
	_ = 1234567i

	_ = 0i
	_ = 0_0i
	_ = 0_8i
	_ = 0_000_000_000i
	_ = 0_123i
	_ = 0_000_000_123i
	_ = 0_000_056_789i
	_ = 1_234i
	_ = 1_234_567i

	_ = 0.i
	_ = 123.i

	_ = 0X_dead_cafe.p-10
	_ = 0x12_34.P1_2_3
	_ = 0X1_2_3_4.P-1_2_3

	// imaginaries
	_ = 0i
	_ = 00i
	_ = 08i
	_ = 0000000000i
	_ = 0123i
	_ = 0000000123i
	_ = 0000056789i
	_ = 1234i
	_ = 1234567i

	_ = 0i
	_ = 0_0i
	_ = 0_8i
	_ = 0_000_000_000i
	_ = 0_123i
	_ = 0_000_000_123i
	_ = 0_000_056_789i
	_ = 1_234i
	_ = 1_234_567i

	_ = 0.i
	_ = 123.i

	_	= 0X_dead_cafe.p-10
	_	= 0x12_34.P1_2_3
	_	= 0X1_2_3_4.P-1_2_3

	// imaginaries
	_	= 0i
	_	= 00i
	_	= 08i
	_	= 0000000000i
	_	= 0123i
	_	= 0000000123i
	_	= 0000056789i
	_	= 1234i
	_	= 1234567i

	_	= 0i
	_	= 0_0i
	_	= 0_8i
	_	= 0_000_000_000i
	_	= 0_123i
	_	= 0_000_000_123i
	_	= 0_000_056_789i
	_	= 1_234i
	_	= 1_234_567i

	_	= 0.i
	_	= 123.i

// Test that it is so even when numbers are normalized.
func TestNodeNoModify(t *testing.T) {
	const (
		src    = "package p\n\nconst _ = 0000000123i\n"
		golden = "package p\n\nconst _ = 123i\n"
	)

	fset := token.NewFileSet()
	file, err := parser.ParseFile(fset, "", src, parser.ParseComments)
	if err != nil {
		t.Fatal(err)
	}

	// Capture original address and value of a BasicLit node