| // compile | |
| // 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. | |
| package p | |
| var ( | |
| x int | |
| xs []int | |
| ) | |
| func a([]int) (int, error) | |
| func b() (int, error) { | |
| return a(append(xs, x)) | |
| } | |
| func c(int, error) (int, error) | |
| func d() (int, error) { | |
| return c(b()) | |
| } |