| // run | |
| // Copyright 2016 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. | |
| // issue 16948: make sure intrinsified atomic ops won't | |
| // confuse the scheduler. | |
| package main | |
| import "sync/atomic" | |
| func main() { | |
| f() | |
| } | |
| var x int32 | |
| type T [10]int | |
| var sink *T | |
| func f() (t T) { | |
| atomic.AddInt32(&x, 1) | |
| 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 | |
| return | |
| } | |
| //go:noinline | |
| func g(a, b, c, d, e int, p *T) { | |
| var t [10000]int // a large stack frame to trigger stack growing | |
| _ = t | |
| sink = p // force p (in caller) heap allocated | |
| } |