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1c53a1b197
Intrinsified atomic op produces <value,memory>. Make sure this memory is considered in the store chain calculation. Fixes #16948. Change-Id: I029f164b123a7e830214297f8373f06ea0bf1e26 Reviewed-on: https://go-review.googlesource.com/28350 Run-TryBot: Cherry Zhang <cherryyz@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org>
35 lines
703 B
Go
35 lines
703 B
Go
// run
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// Copyright 2016 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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// issue 16948: make sure intrinsified atomic ops won't
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// confuse the scheduler.
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package main
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import "sync/atomic"
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func main() {
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f()
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}
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var x int32
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type T [10]int
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var sink *T
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func f() (t T) {
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atomic.AddInt32(&x, 1)
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g(42, 42, 42, 42, 42, &t) // use int values that is invalid pointer to smash the stack slot of return value of runtime.newobject
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return
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}
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//go:noinline
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func g(a, b, c, d, e int, p *T) {
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var t [10000]int // a large stack frame to trigger stack growing
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_ = t
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sink = p // force p (in caller) heap allocated
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}
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