const (
	_ = 1_000 // ERROR "underscore in numeric literal requires go1.13 or later \(-lang was set to go1.12; check go.mod\)|requires go1.13"
	_ = 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

package p

// 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

//
// The base argument must be 0 or a value from 2 through MaxBase. If the base
// is 0, the string prefix determines the actual conversion base. A prefix of
// “0b” or “0B” selects base 2; a “0”, “0o”, or “0O” prefix selects
// base 8, and a “0x” or “0X” prefix selects base 16. Otherwise the selected
// base is 10.
func (z *Int) scan(r io.ByteScanner, base int) (*Int, int, error) {
	// determine sign

package p

const (
	_ = 1_       // ERROR "'_' must separate successive digits"
	_ = 0b       // ERROR "binary literal has no digits|invalid numeric literal"
	_ = 0o       // ERROR "octal literal has no digits|invalid numeric literal"
	_ = 0x       // ERROR "hexadecimal literal has no digits|invalid numeric literal"
	_ = 0xde__ad // ERROR "'_' must separate successive digits"

// license that can be found in the LICENSE file.

// Test Go2 literal syntax for basic types.
// Avoid running gofmt on this file to preserve the
// test cases with upper-case prefixes (0B, 0O, 0X).

package main

import "fmt"

func assert(cond bool) {
	if !cond {
		panic("assertion failed")
	}
}

func equal(x, y interface{}) bool {
	if x != y {
		fmt.Printf("%g != %g\n", x, y)

// The base argument must be 0, 2, 8, 10, or 16. Providing an invalid base
// argument will lead to a run-time panic.
//
// For base 0, the number prefix determines the actual base: A prefix of
// “0b” or “0B” selects base 2, “0o” or “0O” selects base 8, and
// “0x” or “0X” selects base 16. Otherwise, the actual base is 10 and
// no prefix is accepted. The octal prefix "0" is not supported (a leading
// "0" is simply considered a "0").
//

//
// The string may begin with a leading sign: "+" or "-".
//
// If the base argument is 0, the true base is implied by the string's
// prefix following the sign (if present): 2 for "0b", 8 for "0" or "0o",
// 16 for "0x", and 10 otherwise. Also, for argument base 0 only,
// underscore characters are permitted as defined by the Go syntax for
// [integer literals].
//
// The bitSize argument specifies the integer type

00000330  a6 7b 2c 92 7f db 58 c8  fa f9 2d 6b 00 25 dc 0a  |.{,...X...-k.%..|
00000340  aa 13 e8 40 f3 fd 47 23  f6 bf 1c 30 fc 91 18 95  |...@..G#...0....|
00000350  ac a8 82 3d f5 ef 17 03  03 00 99 7e 30 4f f1 00  |...=.......~0O..|
00000360  1e dd eb c6 54 d2 f5 f7  21 aa 6b b0 83 0c fa 8b  |....T...!.k.....|
00000370  12 af ac 15 3e 54 b6 1c  85 9b 0c 80 02 d8 e3 5f  |....>T........._|