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// compile
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// Copyright 2020 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package main
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var g *uint64
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func main() {
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var v uint64
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g = &v
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v &^= (1 << 31)
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v |= 1 << 63
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v &^= (1 << 63)
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}
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