1 // Copyright 2021 The Go Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style
3 // license that can be found in the LICENSE file.
4
5 // Check Go language version-specific errors.
6
7 package go1_12 // go1.12
8
9 // numeric literals
10 const (
11 _ = 1_000 // ERROR "underscores in numeric literals requires go1.13 or later"
12 _ = 0b111 // ERROR "binary literals requires go1.13 or later"
13 _ = 0o567 // ERROR "0o/0O-style octal literals requires go1.13 or later"
14 _ = 0xabc // ok
15 _ = 0x0p1 // ERROR "hexadecimal floating-point literals requires go1.13 or later"
16
17 _ = 0B111 // ERROR "binary"
18 _ = 0O567 // ERROR "octal"
19 _ = 0Xabc // ok
20 _ = 0X0P1 // ERROR "hexadecimal floating-point"
21
22 _ = 1_000i // ERROR "underscores"
23 _ = 0b111i // ERROR "binary"
24 _ = 0o567i // ERROR "octal"
25 _ = 0xabci // ERROR "hexadecimal floating-point"
26 _ = 0x0p1i // ERROR "hexadecimal floating-point"
27 )
28
29 // signed shift counts
30 var (
31 s int
32 _ = 1 << s // ERROR "invalid operation: signed shift count s \(variable of type int\) requires go1.13 or later"
33 _ = 1 >> s // ERROR "signed shift count"
34 )
35
36
View as plain text