}

type ErrorList []Error

func (e ErrorList) Error() string {
	errStrs := make([]string, len(e))
	for i, err := range e {
		errStrs[i] = err.Error()
	}
	return strings.Join(errStrs, "\n")
}

type Error struct {
	Filename string
	Pos      Position
	Verb     string
	ModPath  string
	Err      error
}

func (e *Error) Error() string {
	var pos string

	ld.pkgs = nil
}

// error reports an error via either os.Stderr or base.Error,
// according to whether ld.AllowErrors is set.
func (ld *loader) error(err error) {
	if ld.AllowErrors {
		fmt.Fprintf(os.Stderr, "go: %v\n", err)
	} else if ld.Switcher != nil {
		ld.Switcher.Error(err)
	} else {
		base.Error(err)
	}
}

type UnknownAuthorityError struct {
	Cert *Certificate
	// hintErr contains an error that may be helpful in determining why an
	// authority wasn't found.
	hintErr error
	// hintCert contains a possible authority certificate that was rejected
	// because of the error in hintErr.
	hintCert *Certificate
}

func (e UnknownAuthorityError) Error() string {
	s := "x509: certificate signed by unknown authority"
	if e.hintErr != nil {

func (sys *IAMSys) GetRolePolicy(arnStr string) (arn.ARN, string, error) {
	roleArn, err := arn.Parse(arnStr)
	if err != nil {
		return arn.ARN{}, "", fmt.Errorf("RoleARN parse err: %v", err)
	}
	rolePolicy, ok := sys.rolesMap[roleArn]
	if !ok {
		return arn.ARN{}, "", fmt.Errorf("RoleARN %s is not defined.", arnStr)
	}
	return roleArn, rolePolicy, nil
}

	64:  "machine is not on the network",
	65:  "package not installed",
	66:  "object is remote",
	67:  "link has been severed",
	68:  "advertise error",
	69:  "srmount error",
	70:  "communication error on send",
	71:  "protocol error",
	72:  "locked lock was unmapped ",
	73:  "facility is not active",
	74:  "multihop attempted",
	77:  "not a data message",
	78:  "file name too long",

		defer func() {
			e := recover()
			if str, ok := e.(string); ok {
				errorStr = str
			}
		}()
		f()
		return
	}
	e := getError(func() {
		var ptr *int
		ValueOf(ptr).Len()
	})
	wantStr := "reflect: call of reflect.Value.Len on ptr to non-array Value"
	if e != wantStr {
		t.Errorf("error is %q, want %q", e, wantStr)
	}
}

	r0, _, e1 := syscall.Syscall15(procCreateServiceW.Addr(), 13, uintptr(mgr), uintptr(unsafe.Pointer(serviceName)), uintptr(unsafe.Pointer(displayName)), uintptr(access), uintptr(srvType), uintptr(startType), uintptr(errCtl), uintptr(unsafe.Pointer(pathName)), uintptr(unsafe....