if err != nil {
				t.Fatal(err)
			}
			for _, feat := range w.Features() {
				fmt.Fprintf(f, "%s\n", feat)
			}
			f.Close()
		}

		bs, err := os.ReadFile(goldenFile)
		if err != nil {
			t.Fatalf("opening golden.txt for package %q: %v", fi.Name(), err)
		}
		wanted := strings.Split(string(bs), "\n")
		sort.Strings(wanted)
		for _, feature := range wanted {
			if feature == "" {
				continue
			}

		f.walk(n.Decls, ctxDecl, visit)

	case *ast.Package:
		for _, file := range n.Files {
			f.walk(file, ctxFile, visit)
		}

	case []ast.Decl:
		for _, d := range n {
			f.walk(d, context, visit)
		}
	case []ast.Expr:
		for i := range n {
			f.walk(&n[i], context, visit)
		}
	case []ast.Stmt:
		for _, s := range n {
			f.walk(s, context, visit)
		}
	case []ast.Spec:

	"os"
	"path/filepath"
	"testing"
)

func FuzzReader(f *testing.F) {
	testdata, err := os.ReadDir("testdata")
	if err != nil {
		f.Fatalf("failed to read testdata directory: %s", err)
	}
	for _, de := range testdata {
		if de.IsDir() {
			continue
		}
		b, err := os.ReadFile(filepath.Join("testdata", de.Name()))
		if err != nil {
			f.Fatalf("failed to read testdata: %s", err)
		}
		f.Add(b)
	}

	// Note these errors should be independent of the architecture.
	// Just run the test with amd64.
	parser := newParser("amd64")
	var buf strings.Builder
	parser.errorWriter = &buf

	for _, cat := range testcats {
		for _, test := range cat.tests {
			parser.allowABI = cat.allowABI
			parser.errorCount = 0
			parser.lineNum++
			if !parser.pseudo(test.pseudo, tokenize(test.operands)) {

	{"alpha\nbeta\ngamma", '\n', []string{"alpha\n", "beta\n", "gamma"}, io.EOF},
}

func TestReadBytes(t *testing.T) {
	for _, test := range readBytesTests {
		buf := NewBufferString(test.buffer)
		var err error
		for _, expected := range test.expected {
			var bytes []byte
			bytes, err = buf.ReadBytes(test.delim)
			if string(bytes) != expected {
				t.Errorf("expected %q, got %q", expected, bytes)

	}

	// test read of each file
	for i, ft := range zt.File {
		readTestFile(t, zt, ft, z.File[i], raw)
	}
	if t.Failed() {
		return
	}

	// test simultaneous reads
	n := 0
	done := make(chan bool)
	for i := 0; i < 5; i++ {
		for j, ft := range zt.File {
			go func(j int, ft ZipTestFile) {
				readTestFile(t, zt, ft, z.File[j], raw)
				done <- true

		argv := append(os.Args, "-test.run=^$")
		if err := syscall.Exec(os.Args[0], argv, os.Environ()); err != nil {
			t.Fatal(err)
		}
	}

	var cmds []*exec.Cmd
	defer func() {
		for _, cmd := range cmds {
			cmd.Process.Kill()
		}
	}()

	args := append(append([]string(nil), os.Args[1:]...), "-test.run=^Test18146$")
	for n := attempts; n > 0; n-- {
		cmd := exec.Command(os.Args[0], args...)

		if err, ok = e.(error); e != nil && !ok {
			t.Fatal(e)
		}
	}()

	parse()

	return nil
}

func testBadOperandParser(t *testing.T, parser *Parser, tests []badOperandTest) {
	for _, test := range tests {
		err := tryParse(t, func() {
			parser.start(lex.Tokenize(test.input))
			addr := obj.Addr{}
			parser.operand(&addr)
		})

		switch {
		case err == nil:

	}},
}

func TestReadLineNewlines(t *testing.T) {
	for _, e := range readLineNewlinesTests {
		testReadLineNewlines(t, e.input, e.expect)
	}
}

func testReadLineNewlines(t *testing.T, input string, expect []readLineResult) {
	b := NewReaderSize(strings.NewReader(input), minReadBufferSize)
	for i, e := range expect {
		line, isPrefix, err := b.ReadLine()
		if !bytes.Equal(line, e.line) {

	<li>the index <code>x</code> is <i>in range</i> if <code>0 &lt;= x &lt; len(a)</code>,
	    otherwise it is <i>out of range</i></li>
</ul>

<p>
For <code>a</code> of <a href="#Array_types">array type</a> <code>A</code>:
</p>
<ul>
	<li>a <a href="#Constants">constant</a> index must be in range</li>
	<li>if <code>x</code> is out of range at run time,