err = pkgError
				return
			}
			panic(e)
		}()

		switch {
		case symbol == "":
			pkg.packageDoc() // The package exists, so we got some output.
			return
		case method == "":
			if pkg.symbolDoc(symbol) {
				return
			}
		case pkg.printMethodDoc(symbol, method):
			return
		case pkg.printFieldDoc(symbol, method):
			return
		}
	}
}

	switch *flags.Spectre {
	default:
		log.Printf("unknown setting -spectre=%s", *flags.Spectre)
		os.Exit(2)
	case "":
		// nothing
	case "index":
		// known to compiler; ignore here so people can use
		// the same list with -gcflags=-spectre=LIST and -asmflags=-spectrre=LIST
	case "all", "ret":
		ctxt.Retpoline = true
	}

	ctxt.Bso = bufio.NewWriter(os.Stdout)
	defer ctxt.Bso.Flush()

	dis, err := f.Disasm()
	if err != nil {
		log.Fatalf("disassemble %s: %v", flag.Arg(0), err)
	}

	switch flag.NArg() {
	default:
		usage()
	case 1:
		// disassembly of entire object
		dis.Print(os.Stdout, symRE, 0, ^uint64(0), *printCode, *gnuAsm)

	case 3:
		// disassembly of PC range
		start, err := strconv.ParseUint(strings.TrimPrefix(flag.Arg(1), "0x"), 16, 64)
		if err != nil {

		if err != nil {
			logAndDie(err)
		}
		var f traceviewer.ProfileFunc
		switch *pprofFlag {
		case "net":
			f = pprofByGoroutine(computePprofIO(), parsed)
		case "sync":
			f = pprofByGoroutine(computePprofBlock(), parsed)
		case "syscall":
			f = pprofByGoroutine(computePprofSyscall(), parsed)
		case "sched":
			f = pprofByGoroutine(computePprofSched(), parsed)
		default:

		Exitf("invalid -R value 0x%x", *FlagRound)
	}

	checkStrictDups = *FlagStrictDups

	switch flagW {
	case ternaryFlagFalse:
		*FlagW = false
	case ternaryFlagTrue:
		*FlagW = true
	case ternaryFlagUnset:
		*FlagW = *FlagS // -s implies -w if not explicitly set
		if ctxt.IsDarwin() && ctxt.BuildMode == BuildModeCShared {

			num[r] = int8(i)
			pkg := a.pkg[len("cmd/internal/obj/"):]
			var objname string // name in cmd/internal/obj/$ARCH
			switch r {
			case "SB":
				// SB isn't a real register.  cmd/internal/obj expects 0 in this case.
				objname = "0"
			case "SP":
				objname = pkg + ".REGSP"
			case "g":
				objname = pkg + ".REGG"
			default:
				objname = pkg + ".REG_" + r
			}
			// Assign a GC register map index to registers

		case strings.Contains(out, "mips64"):
			gohostarch = "mips64"
			if elfIsLittleEndian(os.Args[0]) {
				gohostarch = "mips64le"
			}
		case strings.Contains(out, "mips"):
			gohostarch = "mips"
			if elfIsLittleEndian(os.Args[0]) {
				gohostarch = "mipsle"
			}
		case strings.Contains(out, "loongarch64"):
			gohostarch = "loong64"
		case strings.Contains(out, "riscv64"):
			gohostarch = "riscv64"

			report(err)
		}
		os.Exit(exitCode)
	}

	for i := 0; i < flag.NArg(); i++ {
		path := flag.Arg(i)
		switch dir, err := os.Stat(path); {
		case err != nil:
			report(err)
		case dir.IsDir():
			walkDir(path)
		default:
			if err := processFile(path, false); err != nil {
				report(err)
			}
		}
	}

	os.Exit(exitCode)
}

	runY := b.Run("y")

	var broken *Result
	switch {
	case runN.Success && !runY.Success:
		b.Logf("target succeeds with no changes, fails with all changes")
		b.Logf("searching for minimal set of enabled changes causing failure")
		broken = runY
		b.Disable = false

	case !runN.Success && runY.Success:
		b.Logf("target fails with no changes, succeeds with all changes")

// In the test below, package base is
//
//     X = &map{...}
//
// which compiles to
//
//     X = &stmp           // static
//     stmp = makemap(...) // in init function
//
// plugin1 and plugin2 both import base. plugin1 doesn't use
// base.X, so that symbol is deadcoded in plugin1.
//
// plugin1 is loaded first. base.init runs at that point, which
// initialize base.stmp.
//