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// 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)
}
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