gcc/libgo/misc/cgo/test/issue9400/gccgo.go
Ian Lance Taylor 936615752a libgo: add misc/cgo files
Copy all the misc/cgo files from the gc toolchain into libgo/misc.
    
    These will be used for testing purposes by later changes to the
    gotools directory.
    
    Reviewed-on: https://go-review.googlesource.com/46721

From-SVN: r249674
2017-06-27 04:21:40 +00:00

25 lines
594 B
Go

// Copyright 2014 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.
// +build gccgo
package issue9400
import (
"runtime"
"sync/atomic"
)
// The test for the gc compiler resets the stack pointer so that the
// stack gets modified. We don't have a way to do that for gccgo
// without writing more assembly code, which we haven't bothered to
// do. So this is not much of a test.
func RewindAndSetgid() {
atomic.StoreInt32(&Baton, 1)
for atomic.LoadInt32(&Baton) != 0 {
runtime.Gosched()
}
}