if err == io.EOF {
			break
		}
	}
	return string(b[0:nb])
}

type bufReader struct {
	name string
	fn   func(*Reader) string
}

var bufreaders = []bufReader{
	{"1", func(b *Reader) string { return reads(b, 1) }},
	{"2", func(b *Reader) string { return reads(b, 2) }},
	{"3", func(b *Reader) string { return reads(b, 3) }},
	{"4", func(b *Reader) string { return reads(b, 4) }},

			features: []string{"A", "B", "C", "D", "E", "F"},
			required: []string{"B", "D"},
			ok:       false,
			out:      "+A\n+C\n+E\n+F\n",
		},
		{
			name:     "feature removed",
			features: []string{"C", "A"},
			required: []string{"A", "B", "C"},
			ok:       false,
			out:      "-B\n",
		},
		{
			name:      "exception removal",
			features:  []string{"A", "C"},
			required:  []string{"A", "B", "C"},

package asm

import (
	"strings"
	"testing"

	"cmd/asm/internal/lex"
)

func tokenize(s string) [][]lex.Token {
	res := [][]lex.Token{}
	if len(s) == 0 {
		return res
	}
	for _, o := range strings.Split(s, ",") {
		res = append(res, lex.Tokenize(o))
	}
	return res
}

func TestErroneous(t *testing.T) {

	type errtest struct {
		pseudo   string
		operands string
		expected string

import (
	"fmt"
	"go/ast"
	"go/format"
	"go/parser"
	"go/scanner"
	"go/token"
	"os"
	"strings"
)

func parse(name string, src []byte, flags parser.Mode) *ast.File {
	ast1, err := parser.ParseFile(fset, name, src, flags)
	if err != nil {
		if list, ok := err.(scanner.ErrorList); ok {
			// If err is a scanner.ErrorList, its String will print just
			// the first error and then (+n more errors).

		}
		return x
	}
	var major, minor, patch int
	major = atoi(string(matches[1]))
	if len(matches[2]) > 0 {
		minor = atoi(string(matches[2][1:]))
	}
	if len(matches[3]) > 0 {
		patch = atoi(string(matches[3][1:]))
	}
	if parseError != nil {
		t.Logf("error parsing swig version %q, continuing anyway: %s", string(matches[0]), parseError)
		return
	}

				v.sec, v.nsec, got, v.want)
		}
	}
}

func TestParsePAXRecord(t *testing.T) {
	medName := strings.Repeat("CD", 50)
	longName := strings.Repeat("AB", 100)

	vectors := []struct {
		in      string
		wantRes string
		wantKey string
		wantVal string
		ok      bool
	}{
		{"6 k=v\n\n", "\n", "k", "v", true},
		{"19 path=/etc/hosts\n", "", "path", "/etc/hosts", true},

				name, _, ok := parser.funcAddress()

				isFuncSym := strings.HasSuffix(test.input, "(SB)") &&
					// Ignore static symbols.
					!strings.Contains(test.input, "<>")

				wantName := ""
				if isFuncSym {
					// Strip $|* and (SB) and +Int.
					wantName = test.output[:len(test.output)-4]
					if strings.HasPrefix(wantName, "$") || strings.HasPrefix(wantName, "*") {
						wantName = wantName[1:]
					}

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package asm

import (
	"cmd/asm/internal/lex"
	"strings"
	"testing"
)

type badInstTest struct {
	input, error string
}

func TestAMD64BadInstParser(t *testing.T) {
	testBadInstParser(t, "amd64", []badInstTest{
		// Test AVX512 suffixes.
		{"VADDPD.A X0, X1, X2", `unknown suffix "A"`},

			// when using the external linker.
			continue
		}
		// In module mode, this package has a fully-qualified import path.
		// Remove it if present.
		fname = strings.TrimPrefix(fname, "cmd/cgo/internal/")
		if !strings.HasPrefix(fname, "test.") {
			continue
		}
		got = append(got, fname)
	}
	if !reflect.DeepEqual(want, got) {
		t.Errorf("incorrect backtrace:\nwant:\t%v\ngot:\t%v", want, got)
	}

	Importpath = flag.String("p", obj.UnlinkablePkg, "set expected package import to path")
	Spectre    = flag.String("spectre", "", "enable spectre mitigations in `list` (all, ret)")
)

var DebugFlags struct {
	MayMoreStack string `help:"call named function before all stack growth checks"`