if err != nil {
			continue
		}
		if p == "syscall/js" {
			// We don't support examples that import syscall/js,
			// because the package syscall/js is not available in the playground.
			return nil
		}
		n := path.Base(p)
		if s.Name != nil {
			n = s.Name.Name
			switch n {
			case "_":
				blankImports = append(blankImports, s)
				continue
			case ".":

// To expand environment variables, use package os's ExpandEnv.
//
// Note that the examples in this package assume a Unix system.
// They may not run on Windows, and they do not run in the Go Playground
// used by golang.org and godoc.org.
//
// # Executables in the current directory
//
// The functions [Command] and [LookPath] look for a program
// in the directories listed in the current path, following the

	}

	isPowerOfTwo := func(n int64) bool {
		return n > 0 && n&(n-1) == 0
	}
	if *FlagRound != -1 && (*FlagRound < 4096 || !isPowerOfTwo(*FlagRound)) {
		Exitf("invalid -R value 0x%x", *FlagRound)
	}

	checkStrictDups = *FlagStrictDups

	switch flagW {
	case ternaryFlagFalse:
		*FlagW = false
	case ternaryFlagTrue:
		*FlagW = true

		s6b.Grow(s6b.Size() + n)
		s6b.SetSize(s6b.Size() + n)
		size += n
	}

	if size > 0 {
		linkoff = Rnd(int64(uint64(HEADR)+Segtext.Length), *FlagRound) + Rnd(int64(Segrelrodata.Filelen), *FlagRound) + Rnd(int64(Segdata.Filelen), *FlagRound) + Rnd(int64(Segdwarf.Filelen), *FlagRound)
		ctxt.Out.SeekSet(linkoff)

		ctxt.Out.Write(ldr.Data(s1))
		ctxt.Out.Write(ldr.Data(s2))
		ctxt.Out.Write(ldr.Data(s3))

	// Kernel requires all loaded segments to be page-aligned in the file,
	// even though we mark this one as being 0 bytes of virtual address space.
	dwarfstart := Rnd(int64(linkseg.Offset), *FlagRound)
	if _, err := outf.Seek(dwarfstart, 0); err != nil {
		return err
	}

	if _, err := dwarff.Seek(int64(realdwarf.Offset), 0); err != nil {
		return err
	}