[Zlib-devel] ABI change in zlib 1.2.4

[Mark Adler]

On Apr 2, 2010, at 3:19 PM, Enrico Weigelt wrote:
> Perhaps we should have a closer look on what structures we
> export at all in zlib.h - should only be those which are
> absolutely required for the public interface, and no bit more.

There are four structures that are accessible (actually five), with two of them public.  Those are:

z_stream: the main interface to zlib (public)
gz_header: for passing gzip file header information when writing or reading gzip files (public)
z_stream->state: either the deflate or the inflate structure containing state information for compression or decompression respectively (private)
gzFile: state for reading and writing gzip files, analogous to stdio's FILE (private)

Mark