blob: 9b665dc635e89055b53b95c12b1dfd0d02a5a564 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
|
// run
// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Issue 11987. The ppc64 SRADCC instruction was misassembled in a way
// lost bit 5 of the immediate so v>>32 was assembled as v>>0. SRADCC
// is only ever inserted by peep so it's hard to be sure when it will
// be used. This formulation worked when the bug was fixed.
package main
import "fmt"
var v int64 = 0x80000000
func main() {
s := fmt.Sprintf("%v", v>>32 == 0)
if s != "true" {
fmt.Printf("BUG: v>>32 == 0 evaluated as %q\n", s)
}
}
|
