syscall: fix TestForeground for AIX

Syscall function can't be used on AIX. Therefore, Ioctl in
TestForeground must call raw_ioctl.

Change-Id: I96c3b52ee2d61073ae367028d4dfa926107402ba
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/175080
Trust: Than McIntosh <thanm@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
diff --git a/libgo/go/syscall/export_aix_test.go b/libgo/go/syscall/export_aix_test.go
new file mode 100644
index 0000000..044337b
--- /dev/null
+++ b/libgo/go/syscall/export_aix_test.go
@@ -0,0 +1,16 @@
+// Copyright 2019 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 aix
+
+package syscall
+
+import (
+	"unsafe"
+)
+
+func Ioctl(fd, req, arg uintptr) (err Errno) {
+	_, err = raw_ioctl_ptr(int(fd), req, unsafe.Pointer(arg))
+	return err
+}
diff --git a/libgo/go/syscall/export_unix_test.go b/libgo/go/syscall/export_unix_test.go
index dc11f45..4d67be9 100644
--- a/libgo/go/syscall/export_unix_test.go
+++ b/libgo/go/syscall/export_unix_test.go
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build aix darwin dragonfly freebsd hurd linux netbsd openbsd solaris
+// +build darwin dragonfly freebsd hurd linux netbsd openbsd solaris
 
 package syscall