var wr = NewWriter(writerWithReadFromError{})
	if _, err := wr.ReadFrom(strings.NewReader("test2")); err == nil {
		t.Fatal("expected ReadFrom returns error, got nil")
	}
	if _, err := wr.Write([]byte("123")); err == nil {
		t.Fatal("expected Write returns error, got nil")
	}
}

type writeErrorOnlyWriter struct{}

func (w writeErrorOnlyWriter) Write(p []byte) (n int, err error) {

pkg syscall (netbsd-arm64-cgo), const DLT_SLIP_BSDOS = 13
pkg syscall (netbsd-arm64-cgo), const DLT_SLIP_BSDOS ideal-int
pkg syscall (netbsd-arm64-cgo), const DLT_SLIP ideal-int
pkg syscall (netbsd-arm64-cgo), const DLT_SUNATM = 123
pkg syscall (netbsd-arm64-cgo), const DLT_SUNATM ideal-int
pkg syscall (netbsd-arm64-cgo), const DLT_SYMANTEC_FIREWALL = 99
pkg syscall (netbsd-arm64-cgo), const DLT_SYMANTEC_FIREWALL ideal-int

pkg syscall (darwin-386), const SYS_FCHFLAGS = 35
pkg syscall (darwin-386), const SYS_FCHMOD = 124
pkg syscall (darwin-386), const SYS_FCHMOD_EXTENDED = 283
pkg syscall (darwin-386), const SYS_FCHOWN = 123
pkg syscall (darwin-386), const SYS_FCNTL = 92
pkg syscall (darwin-386), const SYS_FCNTL_NOCANCEL = 406
pkg syscall (darwin-386), const SYS_FDATASYNC = 187
pkg syscall (darwin-386), const SYS_FFSCTL = 245

	ORR.P	R2, R3, R4         // ERROR "invalid .P suffix"
	CMP.S	R1, R2	           // ERROR "invalid .S suffix"
	BIC.P	$124, R1, R2       // ERROR "invalid .P suffix"
	MOVW.S	$124, R1           // ERROR "invalid .S suffix"
	MVN.S	$123, g            // ERROR "invalid .S suffix"
	RSB.U	$0, R9             // ERROR "invalid .U suffix"
	CMP.S	$29, g             // ERROR "invalid .S suffix"
	ADD.W	R1<<R2, R3         // ERROR "invalid .W suffix"

	{faces, "~", -1, []string{faces}},
	{faces, "", -1, []string{"☺", "☻", "☹"}},
	{"1 2 3 4", " ", 3, []string{"1 ", "2 ", "3 4"}},
	{"1 2 3", " ", 3, []string{"1 ", "2 ", "3"}},
	{"1 2", " ", 3, []string{"1 ", "2"}},
	{"123", "", 2, []string{"1", "23"}},
	{"123", "", 17, []string{"1", "2", "3"}},
}

func TestSplitAfter(t *testing.T) {
	for _, tt := range splitaftertests {

		{call: "Setgroups([]int{0,1,2,3})", fn: func() error { return syscall.Setgroups([]int{0, 1, 2, 3}) }, filter: "Groups:", expect: "\t0 1 2 3"},
		{call: "Setgroups(nil)", fn: func() error { return syscall.Setgroups(nil) }, filter: "Groups:", expect: ""},

		formats: FormatGNU,
	}, {
		header:  &Header{AccessTime: time.Unix(-123, 0)},
		paxHdrs: map[string]string{paxAtime: "-123"},
		formats: FormatPAX | FormatGNU,
	}, {
		header:  &Header{AccessTime: time.Unix(-123, 0), Format: FormatPAX},
		paxHdrs: map[string]string{paxAtime: "-123"},
		formats: FormatPAX,
	}, {
		header:  &Header{ChangeTime: time.Unix(123, 456)},
		paxHdrs: map[string]string{paxCtime: "123.000000456"},

			},
			Format: FormatPAX,

			t.Errorf("want full output %q, got %q", text, got)
		}
	}
	wantErr = regexp.MustCompile("^no exit code")
	check("abc")
	check("exitcode")
	check("exitcode=")
	check("exitcode=123\n")
	wantErr = regexp.MustCompile("^bad exit code: .* value out of range")
	check("exitcode=999999999999999999999999")

pkg debug/dwarf, const AttrBinaryScale = 91
pkg debug/dwarf, const AttrBinaryScale Attr
pkg debug/dwarf, const AttrCallAllCalls = 122
pkg debug/dwarf, const AttrCallAllCalls Attr
pkg debug/dwarf, const AttrCallAllSourceCalls = 123
pkg debug/dwarf, const AttrCallAllSourceCalls Attr
pkg debug/dwarf, const AttrCallAllTailCalls = 124
pkg debug/dwarf, const AttrCallAllTailCalls Attr
pkg debug/dwarf, const AttrCallDataLocation = 133