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// Copyright 2013 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.
// This file contains tests for the atomic checker.
package testdata
import (
"sync/atomic"
)
type Counter uint64
func AtomicTests() {
x := uint64(1)
x = atomic.AddUint64(&x, 1) // ERROR "direct assignment to atomic value"
_, x = 10, atomic.AddUint64(&x, 1) // ERROR "direct assignment to atomic value"
x, _ = atomic.AddUint64(&x, 1), 10 // ERROR "direct assignment to atomic value"
y := &x
*y = atomic.AddUint64(y, 1) // ERROR "direct assignment to atomic value"
var su struct{ Counter uint64 }
su.Counter = atomic.AddUint64(&su.Counter, 1) // ERROR "direct assignment to atomic value"
z1 := atomic.AddUint64(&su.Counter, 1)
_ = z1 // Avoid err "z declared and not used"
var sp struct{ Counter *uint64 }
*sp.Counter = atomic.AddUint64(sp.Counter, 1) // ERROR "direct assignment to atomic value"
z2 := atomic.AddUint64(sp.Counter, 1)
_ = z2 // Avoid err "z declared and not used"
au := []uint64{10, 20}
au[0] = atomic.AddUint64(&au[0], 1) // ERROR "direct assignment to atomic value"
au[1] = atomic.AddUint64(&au[0], 1)
ap := []*uint64{&au[0], &au[1]}
*ap[0] = atomic.AddUint64(ap[0], 1) // ERROR "direct assignment to atomic value"
*ap[1] = atomic.AddUint64(ap[0], 1)
x = atomic.AddUint64() // Used to make vet crash; now silently ignored.
{
// A variable declaration creates a new variable in the current scope.
x := atomic.AddUint64(&x, 1) // ERROR "declaration of .x. shadows declaration at testdata/atomic.go:16"
// Re-declaration assigns a new value.
x, w := atomic.AddUint64(&x, 1), 10 // ERROR "direct assignment to atomic value"
_ = w
}
}
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