| // 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 |
| } |
