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- // Copyright 2018 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 syscall_test
- import (
- "syscall"
- "testing"
- )
- // testalias checks for aliasing of error strings returned by sys1 and sys2,
- // which both call the function named fn in package syscall
- func testalias(t *testing.T, fn string, sys1, sys2 func() error) {
- err := sys1().Error()
- errcopy := string([]byte(err))
- sys2()
- if err != errcopy {
- t.Errorf("syscall.%s error string changed from %q to %q\n", fn, errcopy, err)
- }
- }
- // issue 13770: errors cannot be nested in Plan 9
- func TestPlan9Syserr(t *testing.T) {
- testalias(t,
- "Syscall",
- func() error {
- return syscall.Mkdir("/", 0)
- },
- func() error {
- return syscall.Mkdir("#", 0)
- })
- testalias(t,
- "Syscall6",
- func() error {
- return syscall.Mount(0, 0, "", 0, "")
- },
- func() error {
- return syscall.Mount(-1, 0, "", 0, "")
- })
- // originally failed only on plan9_arm
- testalias(t,
- "seek",
- func() error {
- _, err := syscall.Seek(0, 0, -1)
- return err
- },
- func() error {
- _, err := syscall.Seek(-1, 0, 0)
- return err
- })
- }
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