| // compile | |
| // Copyright 2020 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. | |
| package main | |
| var g *uint64 | |
| func main() { | |
| var v uint64 | |
| g = &v | |
| v &^= (1 << 31) | |
| v |= 1 << 63 | |
| v &^= (1 << 63) | |
| } |