for _, f := range files {
			ww, err := w.CreateHeader(f.header)
			if err != nil {
				t.Fatalf("unable to write previously parsed header: %s", err)
			}
			if _, err := ww.Write(f.content); err != nil {
				t.Fatalf("unable to write previously parsed content: %s", err)
			}
		}

		if err := w.Close(); err != nil {
			t.Fatalf("Unable to write archive: %s", err)
		}

		// TODO: We may want to check if the archive roundtrips.

	if err != nil {
		t.Fatalf("Stat failed: %v", err)
	}

	// Debug paths are stored slash-separated, so convert to system-native.
	srcPath = filepath.FromSlash(srcPath)
	fi2, err := os.Stat(srcPath)

	if err != nil {
		t.Fatalf("Stat failed: %v", err)
	}
	if !os.SameFile(fi1, fi2) {
		t.Fatalf("addr2line_test.go and %s are not same file", srcPath)
	}
	if want := "124"; srcLineNo != want {

		})
		if err != nil {
			log.Fatal(err)
		}
		if _, err := w.Write(data); err != nil {
			log.Fatal(err)
		}
		seen[name] = true
		return nil
	})
	if err != nil {
		log.Fatal(err)
	}
	if err := zw.Close(); err != nil {
		log.Fatal(err)
	}
	if len(seen) == 0 {
		log.Fatalf("did not find any files to add")
	}
	if !seen["US/Eastern"] {
		log.Fatalf("did not find US/Eastern to add")
	}

		if *updateGolden {
			os.Remove(goldenFile)
			f, err := os.Create(goldenFile)
			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)

	if err != nil {
		t.Fatalf("mmap failed %s", err)
	}
	err = syscall.Mprotect(b[:pagesize], syscall.PROT_NONE)
	if err != nil {
		t.Fatalf("mprotect low failed %s\n", err)
	}
	err = syscall.Mprotect(b[2*pagesize:], syscall.PROT_NONE)
	if err != nil {
		t.Fatalf("mprotect high failed %s\n", err)
	}
	return b[pagesize : 2*pagesize]
}

	err := w.WriteHeader(&Header{
		Name: "lorem.txt",
		Mode: 0600,
		Size: int64(len(inp)),
	})
	if err != nil {
		f.Fatalf("failed to create writer: %s", err)
	}
	_, err = w.Write(inp)
	if err != nil {
		f.Fatalf("failed to write file to archive: %s", err)
	}
	if err := w.Close(); err != nil {
		f.Fatalf("failed to write archive: %s", err)
	}
	f.Add(b.Bytes())

	f.Fuzz(func(t *testing.T, b []byte) {

	id, err := buildid.ReadFile(file)
	if err != nil {
		log.Fatal(err)
	}
	if !*wflag {
		fmt.Printf("%s\n", id)
		return
	}

	// Keep in sync with src/cmd/go/internal/work/buildid.go:updateBuildID

	f, err := os.Open(file)
	if err != nil {
		log.Fatal(err)
	}
	matches, hash, err := buildid.FindAndHash(f, id, 0)
	f.Close()
	if err != nil {
		log.Fatal(err)
	}

	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)) {
				t.Fatalf("Wrong pseudo-instruction: %s", test.pseudo)
			}
			errorLine := buf.String()
			if test.expected != errorLine {
				t.Errorf("Unexpected error %q; expected %q", errorLine, test.expected)
			}
			buf.Reset()
		}

		t.Errorf("%s", err)
	}
}

func mustHaveCxx(t *testing.T) {
	// Ask the go tool for the CXX it's configured to use.
	cxx, err := exec.Command("go", "env", "CXX").CombinedOutput()
	if err != nil {
		t.Fatalf("go env CXX failed: %s", err)
	}
	args, err := quoted.Split(string(cxx))
	if err != nil {
		t.Skipf("could not parse 'go env CXX' output %q: %s", string(cxx), err)
	}
	if len(args) == 0 {
		t.Skip("no C++ compiler")

	log.SetFlags(0)
	log.SetPrefix("asm: ")

	buildcfg.Check()
	GOARCH := buildcfg.GOARCH

	flags.Parse()

	architecture := arch.Set(GOARCH, *flags.Shared || *flags.Dynlink)
	if architecture == nil {
		log.Fatalf("unrecognized architecture %s", GOARCH)
	}
	ctxt := obj.Linknew(architecture.LinkArch)
	ctxt.Debugasm = flags.PrintOut
	ctxt.Debugvlog = flags.DebugV
	ctxt.Flag_dynlink = *flags.Dynlink