.ok());
    exits[i] = ops::internal::Exit(root.WithOpName(absl::StrCat("exit_", i)),
                                   iv.output);
  }

  FixupSourceAndSinkEdges(root.graph());

  {
    PredicateMapTy predicate_map;
    TF_ASSERT_OK(ComputePredicates(*root.graph(), &predicate_map));

    EXPECT_NE(predicate_map[ControlOutputFor(exits[0])],

			if err != nil {
				Exitf("cannot reopen %s: %v", h.pn, err)
			}
			defer f.Close()
			if _, err := f.Seek(h.off, 0); err != nil {
				Exitf("cannot seek %s: %v", h.pn, err)
			}

			w, err := os.Create(dst)
			if err != nil {
				Exitf("cannot create %s: %v", dst, err)
			}
			if _, err := io.CopyN(w, f, h.length); err != nil {
				Exitf("cannot write %s: %v", dst, err)
			}

	// any final status. This method is repeatedly invoked with diminishing grace periods until it exits
	// without error. Once this method exits with no error other components are allowed to tear down
	// supporting resources like volumes and devices. If the context is canceled, the method should
	// return context.Canceled unless it has successfully finished, which may occur when a shorter

            if [ "${GO_OUT}" == "" ]; then
                echo "Could not guess the correct output directory to use."
                exit 1
            fi
            ;;
        h)
            usage
            exit
            ;;
        ?)
            usage
            exit
            ;;
    esac
done

if [ -z "${GO_OUT}" ]; then

// directly. TestMain runs in the main goroutine and can do whatever setup
// and teardown is necessary around a call to m.Run. m.Run will return an exit
// code that may be passed to os.Exit. If TestMain returns, the test wrapper
// will pass the result of m.Run to os.Exit itself.
//
// When TestMain is called, flag.Parse has not been run. If TestMain depends on

	if hex.DecodedLen(len(val)) > maxLen {
		Exitf("-B option too long (max %d digits): %s", maxLen, ov)
	}

	b, err := hex.DecodeString(val)
	if err != nil {
		if err == hex.ErrLength {
			Exitf("-B argument must have even number of digits: %s", ov)
		}
		if inv, ok := err.(hex.InvalidByteError); ok {
			Exitf("-B argument contains invalid hex digit %c: %s", byte(inv), ov)
		}
		Exitf("-B argument contains invalid hex: %s", ov)

		// actually print that if it panics, exits, or terminates abnormally,
		// so we print it here. We can't always check whether it was printed
		// because some tests need stdout to be a terminal (golang.org/issue/34791),
		// not a pipe.
		// TODO(golang.org/issue/29062): tests that exit with status 0 without
		// printing a final result should fail.
		prefix := ""

  // order guarantees that the exits in the ready queue are visited before
  // nodes that will become ready in the future.
  std::deque<Node*> ready;
  ready.push_back(src_node);
  // ready_enters_per_frame and ready_exits serve as a staging area to buffer
  // the ready enters/exits before they are moved to the `ready` queue for

}

// xcoffGetDwarfSubtype returns the XCOFF name of the DWARF section str
// and its subtype constant.
func xcoffGetDwarfSubtype(str string) (string, uint32) {
	switch str {
	default:
		Exitf("unknown DWARF section name for XCOFF: %s", str)
	case ".debug_abbrev":
		return ".dwabrev", SSUBTYP_DWABREV
	case ".debug_info":
		return ".dwinfo", SSUBTYP_DWINFO
	case ".debug_frame":

		gotool, err := testenv.GoTool()
		if err != nil {
			fmt.Fprintln(os.Stderr, "locating go tool: ", err)
			os.Exit(2)
		}

		goEnv := func(name string) string {
			out, err := exec.Command(gotool, "env", name).CombinedOutput()
			if err != nil {
				fmt.Fprintf(os.Stderr, "go env %s: %v\n%s", name, err, out)
				os.Exit(2)
			}
			return strings.TrimSpace(string(out))
		}
		testGOROOT = goEnv("GOROOT")