[llvm] r291340 - TarWriter: Use Ustar header's "prefix" field to store long filenames.

[Rafael Avila de Espindola via llvm-commits]

> +// Returns true if a given path can be stored to a Ustar header
> +// without the PAX extension.
> +static bool fitInUstar(StringRef Path) {
> +  StringRef Prefix;
> +  StringRef Name;
> +  std::tie(Prefix, Name) = splitPath(Path);
> +  return Name.size() <= sizeof(UstarHeader::Name);

Don't you have to check sizeof(UstarHeader::Prefix) too?

Cheers,
Rafael