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go/misc/cgo/test/issue9400/gccgo.go
Ian Lance Taylor e2b6cebcd6 misc/cgo/test/issue9400: fix to build with gccgo
This doesn't test much with gccgo, but at least it builds now, and the
test does, unsurprisingly, pass.  A proper test would require adding
assembly files in GCC syntax for all platforms that gccgo supports,
which would be infeasible.

Also added copyright headers to the asm files.

Change-Id: Icea5af29d7d521a0681506ddb617a79705b76d33
Reviewed-on: https://go-review.googlesource.com/9417
Reviewed-by: Minux Ma <minux@golang.org>
2015-04-29 16:57:13 +00:00

25 lines
595 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()
}
}