0N/APossible upgrades to gzfilebuf:

3909N/A

0N/A- The ability to do putback (e.g. putbackfail)

0N/A

0N/A- The ability to seek (zlib supports this, but could be slow/tricky)

0N/A

2362N/A- Simultaneous read/write access (does it make sense?)

0N/A

2362N/A- Support for ios_base::ate open mode

0N/A

0N/A- Locale support?

0N/A

0N/A- Check public interface to see which calls give problems

0N/A (due to dependence on library internals)

0N/A

0N/A- Override operator<<(ostream&, gzfilebuf*) to allow direct copying

0N/A of stream buffer to stream ( i.e. os << is.rdbuf(); )

0N/A