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Message-Id:	<202305012325.341NPtFp016576@delorie.com>
Date:	Tue, 2 May 2023 01:19:50 +0200
From:	"Juan Manuel Guerrero (juan DOT guerrero AT gmx DOT de) [via djgpp-announce AT delorie DOT com]" <djgpp-announce AT delorie DOT com>
To:	djgpp-announce AT delorie DOT com
Subject:	ANNOUNCE: DJGPP port of zlib 1.2.13 uploaded.
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Reply-To:	djgpp AT delorie DOT com

This is a port of zlib 1.2.13 to MSDOS/DJGPP.


  zlib 1.2 is a free, general purpose data compression/decompression library
  as used in gzip.  All the code is thread safe.


  DJGPP specific changes.
  =======================

  There are no DJGPP specific changes.  Only the usual configuration
  files have been added.  They are located in the "djgpp" directory.

  The port has been configured and compiled on WinXP SP3, Win98SE and
  MSDOS 6.22 with DOSLFN v0.41f.  There is no guarantee that this may
  be possible with any other DOS-like OS.  Due to the use of long file
  names it will not be possible to configure and compile without LFN
  support.  The port has been compiled using gcc346 and bnu2351b.

  The port has been tested by using it.  I have used them only on WinXP.
  It has worked flawlessly.  I do not konw if this will ever be the case
  on FreeDOS.  I have never used/tested them in that environment.

  To be able to build this port you may need to have LFN support.

  As usual, all djgpp specific files (diffs, README files, etc.) are stored in
  the "djgpp" directory.  The sources have been configured to be build in the
  "0build" directory.  If for some reason it does not work for you, delete its
  contents and configure from scratch again.

  For further information about zlib please read the docs and
  NEWS file.


  Here is an extract of the home page showing the user visible changes
  from the last port (zlib 1.2.12) to this one:

-------------------------------------------------------------------------------

Version 1.2.13 has these key updates from 1.2.12:

    Fix a bug when getting a gzip header extra field with inflateGetHeader(). This remedies CVE-2022-37434.
    Fix a bug in block type selection when Z_FIXED used. Now the smallest block type is selected, for better compression.
    Fix a configure issue that discarded the provided CC definition.
    Correct incorrect inputs provided to the CRC functions. This mitigates a bug in Java.
    Repair prototypes and exporting of the new CRC functions.
    Fix inflateBack to detect invalid input with distances too far.

Due to the first bug fix, any installations of 1.2.12 or earlier should be replaced with 1.2.13.


-------------------------------------------------------------------------------




  The port consists of the usual two packages that have been produced using
  djdev20X (CVS repository code) and can be downloaded from ftp.delorie.com
  and mirrors as (time stamp 2023-04-02):


    zlib 1.2.13 headers, libs and man format documentation:
    http://ftp.delorie.com/pub/djgpp/current/v2tk/zlb1213b.zip

    zlib 1.2.13 source:
    http://ftp.delorie.com/pub/djgpp/current/v2tk/zlb1213s.zip



  Send zlib specific bug reports to <zlib AT gzip DOT org>.
  Send suggestions and bug reports concerning the DJGPP port to
  comp.os.msdos.djgpp or <djgpp AT delorie DOT com>.


Enjoy.

    Guerrero, Juan Manuel <juan DOT guerrero AT gmx DOT de>

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