testenv.MustHaveGoBuild(t)
	testenv.MustInternalLink(t, false)

	dir := t.TempDir()
	hello := filepath.Join(dir, "hello.go")
	prog := `
		package main
		func main() {
			println("hello world")
		}
	`
	err := os.WriteFile(hello, []byte(prog), 0666)
	if err != nil {
		t.Fatal(err)
	}

	run := func(args ...string) string {
		return doRun(t, dir, args...)
	}

		zs,
	}
	var buf bytes.Buffer
	err = template.Must(template.New("prog").Parse(prog)).Execute(&buf, v)
	if err != nil {
		log.Fatal(err)
	}
	data, err := format.Source(buf.Bytes())
	if err != nil {
		log.Fatal(err)
	}
	err = os.WriteFile(*filename, data, 0644)
	if err != nil {
		log.Fatal(err)
	}
}

const prog = `
// Copyright 2013 The Go Authors. All rights reserved.

		case ARET:
			if p.Link != nil {
				p.Link.Mark |= LABEL
			}
		}
	}

	var mov, add obj.As

	add = AADDV
	mov = AMOVV

	var q *obj.Prog
	var q1 *obj.Prog
	autosize := int32(0)
	var p1 *obj.Prog
	var p2 *obj.Prog
	for p := c.cursym.Func().Text; p != nil; p = p.Link {
		o := p.As
		switch o {
		case obj.ATEXT:
			autosize = int32(textstksiz)

// Ensure that runtime traceback does not infinite loop for
// the testcase below.

package main

import (
	"bytes"
	"io/ioutil"
	"log"
	"os"
	"os/exec"
	"path/filepath"
)

const prog = `

package main

import "context"

var gpi *int

type nAO struct {
	eE bool
}

type NAO func(*nAO)

func WEA() NAO {
	return func(o *nAO) { o.eE = true }
}

type R struct {

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

package obj

// go-specific code shared across loaders (5l, 6l, 8l).

func Nopout(p *Prog) {
	p.As = ANOP
	p.Scond = 0
	p.From = Addr{}
	p.RestArgs = nil
	p.Reg = 0
	p.To = Addr{}

	capNames := re.CapNames()

	re = re.Simplify()
	prog, err := syntax.Compile(re)
	if err != nil {
		return nil, err
	}
	matchcap := prog.NumCap
	if matchcap < 2 {
		matchcap = 2
	}
	regexp := &Regexp{
		expr:        expr,
		prog:        prog,
		onepass:     compileOnePass(prog),
		numSubexp:   maxCap,
		subexpNames: capNames,
		cond:        prog.StartCond(),
		longest:     longest,

package obj

// Code and data passes.

// brloop returns the ultimate destination of the series of unconditional jumps beginning at p.
// In the case of an infinite loop, brloop returns nil.
func brloop(p *Prog) *Prog {
	c := 0
	for q := p; q != nil; q = q.To.Target() {
		if q.As != AJMP || q.To.Target() == nil {
			return q
		}
		c++
		if c >= 5000 {
			// infinite loop
			return nil
		}
	}

	obj.Nopout(p)
}

func rewriteToPcrel(ctxt *obj.Link, p *obj.Prog, newprog obj.ProgAlloc) {
	// RegTo2 is set on the instructions we insert here so they don't get
	// processed twice.
	if p.RegTo2 != 0 {
		return
	}
	if p.As == obj.ATEXT || p.As == obj.AFUNCDATA || p.As == obj.ACALL || p.As == obj.ARET || p.As == obj.AJMP {
		return
	}
	// Any Prog (aside from the above special cases) with an Addr with Name ==

	}

	// Read program headers
	f.Progs = make([]*Prog, phnum)
	phdata, err := saferio.ReadDataAt(sr, uint64(phnum)*uint64(phentsize), phoff)
	if err != nil {
		return nil, err
	}
	for i := 0; i < phnum; i++ {
		off := uintptr(i) * uintptr(phentsize)
		p := new(Prog)
		switch f.Class {
		case ELFCLASS32:
			var ph Prog32
			p.ProgHeader = ProgHeader{

	"cmd/go/internal/trace"
	"cmd/go/internal/work"
)

// Break init loop.
func init() {
	CmdVet.Run = runVet
}

var CmdVet = &base.Command{
	CustomFlags: true,
	UsageLine:   "go vet [build flags] [-vettool prog] [vet flags] [packages]",
	Short:       "report likely mistakes in packages",
	Long: `
Vet runs the Go vet command on the packages named by the import paths.

For more about vet and its flags, see 'go doc cmd/vet'.