ChangeLog
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- ChangeLog file for zlib
- Changes in 1.2.3 (18 July 2005)
- - Apply security vulnerability fixes to contrib/infback9 as well
- - Clean up some text files (carriage returns, trailing space)
- - Update testzlib, vstudio, masmx64, and masmx86 in contrib [Vollant]
- Changes in 1.2.2.4 (11 July 2005)
- - Add inflatePrime() function for starting inflation at bit boundary
- - Avoid some Visual C warnings in deflate.c
- - Avoid more silly Visual C warnings in inflate.c and inftrees.c for 64-bit
- compile
- - Fix some spelling errors in comments [Betts]
- - Correct inflateInit2() error return documentation in zlib.h
- - Added zran.c example of compressed data random access to examples
- directory, shows use of inflatePrime()
- - Fix cast for assignments to strm->state in inflate.c and infback.c
- - Fix zlibCompileFlags() in zutil.c to use 1L for long shifts [Oberhumer]
- - Move declarations of gf2 functions to right place in crc32.c [Oberhumer]
- - Add cast in trees.c t avoid a warning [Oberhumer]
- - Avoid some warnings in fitblk.c, gun.c, gzjoin.c in examples [Oberhumer]
- - Update make_vms.com [Zinser]
- - Initialize state->write in inflateReset() since copied in inflate_fast()
- - Be more strict on incomplete code sets in inflate_table() and increase
- ENOUGH and MAXD -- this repairs a possible security vulnerability for
- invalid inflate input. Thanks to Tavis Ormandy and Markus Oberhumer for
- discovering the vulnerability and providing test cases.
- - Add ia64 support to configure for HP-UX [Smith]
- - Add error return to gzread() for format or i/o error [Levin]
- - Use malloc.h for OS/2 [Necasek]
- Changes in 1.2.2.3 (27 May 2005)
- - Replace 1U constants in inflate.c and inftrees.c for 64-bit compile
- - Typecast fread() return values in gzio.c [Vollant]
- - Remove trailing space in minigzip.c outmode (VC++ can't deal with it)
- - Fix crc check bug in gzread() after gzungetc() [Heiner]
- - Add the deflateTune() function to adjust internal compression parameters
- - Add a fast gzip decompressor, gun.c, to examples (use of inflateBack)
- - Remove an incorrect assertion in examples/zpipe.c
- - Add C++ wrapper in infback9.h [Donais]
- - Fix bug in inflateCopy() when decoding fixed codes
- - Note in zlib.h how much deflateSetDictionary() actually uses
- - Remove USE_DICT_HEAD in deflate.c (would mess up inflate if used)
- - Add _WIN32_WCE to define WIN32 in zconf.in.h [Spencer]
- - Don't include stderr.h or errno.h for _WIN32_WCE in zutil.h [Spencer]
- - Add gzdirect() function to indicate transparent reads
- - Update contrib/minizip [Vollant]
- - Fix compilation of deflate.c when both ASMV and FASTEST [Oberhumer]
- - Add casts in crc32.c to avoid warnings [Oberhumer]
- - Add contrib/masmx64 [Vollant]
- - Update contrib/asm586, asm686, masmx86, testzlib, vstudio [Vollant]
- Changes in 1.2.2.2 (30 December 2004)
- - Replace structure assignments in deflate.c and inflate.c with zmemcpy to
- avoid implicit memcpy calls (portability for no-library compilation)
- - Increase sprintf() buffer size in gzdopen() to allow for large numbers
- - Add INFLATE_STRICT to check distances against zlib header
- - Improve WinCE errno handling and comments [Chang]
- - Remove comment about no gzip header processing in FAQ
- - Add Z_FIXED strategy option to deflateInit2() to force fixed trees
- - Add updated make_vms.com [Coghlan], update README
- - Create a new "examples" directory, move gzappend.c there, add zpipe.c,
- fitblk.c, gzlog.[ch], gzjoin.c, and zlib_how.html.
- - Add FAQ entry and comments in deflate.c on uninitialized memory access
- - Add Solaris 9 make options in configure [Gilbert]
- - Allow strerror() usage in gzio.c for STDC
- - Fix DecompressBuf in contrib/delphi/ZLib.pas [ManChesTer]
- - Update contrib/masmx86/inffas32.asm and gvmat32.asm [Vollant]
- - Use z_off_t for adler32_combine() and crc32_combine() lengths
- - Make adler32() much faster for small len
- - Use OS_CODE in deflate() default gzip header
- Changes in 1.2.2.1 (31 October 2004)
- - Allow inflateSetDictionary() call for raw inflate
- - Fix inflate header crc check bug for file names and comments
- - Add deflateSetHeader() and gz_header structure for custom gzip headers
- - Add inflateGetheader() to retrieve gzip headers
- - Add crc32_combine() and adler32_combine() functions
- - Add alloc_func, free_func, in_func, out_func to Z_PREFIX list
- - Use zstreamp consistently in zlib.h (inflate_back functions)
- - Remove GUNZIP condition from definition of inflate_mode in inflate.h
- and in contrib/inflate86/inffast.S [Truta, Anderson]
- - Add support for AMD64 in contrib/inflate86/inffas86.c [Anderson]
- - Update projects/README.projects and projects/visualc6 [Truta]
- - Update win32/DLL_FAQ.txt [Truta]
- - Avoid warning under NO_GZCOMPRESS in gzio.c; fix typo [Truta]
- - Deprecate Z_ASCII; use Z_TEXT instead [Truta]
- - Use a new algorithm for setting strm->data_type in trees.c [Truta]
- - Do not define an exit() prototype in zutil.c unless DEBUG defined
- - Remove prototype of exit() from zutil.c, example.c, minigzip.c [Truta]
- - Add comment in zlib.h for Z_NO_FLUSH parameter to deflate()
- - Fix Darwin build version identification [Peterson]
- Changes in 1.2.2 (3 October 2004)
- - Update zlib.h comments on gzip in-memory processing
- - Set adler to 1 in inflateReset() to support Java test suite [Walles]
- - Add contrib/dotzlib [Ravn]
- - Update win32/DLL_FAQ.txt [Truta]
- - Update contrib/minizip [Vollant]
- - Move contrib/visual-basic.txt to old/ [Truta]
- - Fix assembler builds in projects/visualc6/ [Truta]
- Changes in 1.2.1.2 (9 September 2004)
- - Update INDEX file
- - Fix trees.c to update strm->data_type (no one ever noticed!)
- - Fix bug in error case in inflate.c, infback.c, and infback9.c [Brown]
- - Add "volatile" to crc table flag declaration (for DYNAMIC_CRC_TABLE)
- - Add limited multitasking protection to DYNAMIC_CRC_TABLE
- - Add NO_vsnprintf for VMS in zutil.h [Mozilla]
- - Don't declare strerror() under VMS [Mozilla]
- - Add comment to DYNAMIC_CRC_TABLE to use get_crc_table() to initialize
- - Update contrib/ada [Anisimkov]
- - Update contrib/minizip [Vollant]
- - Fix configure to not hardcode directories for Darwin [Peterson]
- - Fix gzio.c to not return error on empty files [Brown]
- - Fix indentation; update version in contrib/delphi/ZLib.pas and
- contrib/pascal/zlibpas.pas [Truta]
- - Update mkasm.bat in contrib/masmx86 [Truta]
- - Update contrib/untgz [Truta]
- - Add projects/README.projects [Truta]
- - Add project for MS Visual C++ 6.0 in projects/visualc6 [Cadieux, Truta]
- - Update win32/DLL_FAQ.txt [Truta]
- - Update list of Z_PREFIX symbols in zconf.h [Randers-Pehrson, Truta]
- - Remove an unnecessary assignment to curr in inftrees.c [Truta]
- - Add OS/2 to exe builds in configure [Poltorak]
- - Remove err dummy parameter in zlib.h [Kientzle]
- Changes in 1.2.1.1 (9 January 2004)
- - Update email address in README
- - Several FAQ updates
- - Fix a big fat bug in inftrees.c that prevented decoding valid
- dynamic blocks with only literals and no distance codes --
- Thanks to "Hot Emu" for the bug report and sample file
- - Add a note to puff.c on no distance codes case.
- Changes in 1.2.1 (17 November 2003)
- - Remove a tab in contrib/gzappend/gzappend.c
- - Update some interfaces in contrib for new zlib functions
- - Update zlib version number in some contrib entries
- - Add Windows CE definition for ptrdiff_t in zutil.h [Mai, Truta]
- - Support shared libraries on Hurd and KFreeBSD [Brown]
- - Fix error in NO_DIVIDE option of adler32.c
- Changes in 1.2.0.8 (4 November 2003)
- - Update version in contrib/delphi/ZLib.pas and contrib/pascal/zlibpas.pas
- - Add experimental NO_DIVIDE #define in adler32.c
- - Possibly faster on some processors (let me know if it is)
- - Correct Z_BLOCK to not return on first inflate call if no wrap
- - Fix strm->data_type on inflate() return to correctly indicate EOB
- - Add deflatePrime() function for appending in the middle of a byte
- - Add contrib/gzappend for an example of appending to a stream
- - Update win32/DLL_FAQ.txt [Truta]
- - Delete Turbo C comment in README [Truta]
- - Improve some indentation in zconf.h [Truta]
- - Fix infinite loop on bad input in configure script [Church]
- - Fix gzeof() for concatenated gzip files [Johnson]
- - Add example to contrib/visual-basic.txt [Michael B.]
- - Add -p to mkdir's in Makefile.in [vda]
- - Fix configure to properly detect presence or lack of printf functions
- - Add AS400 support [Monnerat]
- - Add a little Cygwin support [Wilson]
- Changes in 1.2.0.7 (21 September 2003)
- - Correct some debug formats in contrib/infback9
- - Cast a type in a debug statement in trees.c
- - Change search and replace delimiter in configure from % to # [Beebe]
- - Update contrib/untgz to 0.2 with various fixes [Truta]
- - Add build support for Amiga [Nikl]
- - Remove some directories in old that have been updated to 1.2
- - Add dylib building for Mac OS X in configure and Makefile.in
- - Remove old distribution stuff from Makefile
- - Update README to point to DLL_FAQ.txt, and add comment on Mac OS X
- - Update links in README
- Changes in 1.2.0.6 (13 September 2003)
- - Minor FAQ updates
- - Update contrib/minizip to 1.00 [Vollant]
- - Remove test of gz functions in example.c when GZ_COMPRESS defined [Truta]
- - Update POSTINC comment for 68060 [Nikl]
- - Add contrib/infback9 with deflate64 decoding (unsupported)
- - For MVS define NO_vsnprintf and undefine FAR [van Burik]
- - Add pragma for fdopen on MVS [van Burik]
- Changes in 1.2.0.5 (8 September 2003)
- - Add OF to inflateBackEnd() declaration in zlib.h
- - Remember start when using gzdopen in the middle of a file
- - Use internal off_t counters in gz* functions to properly handle seeks
- - Perform more rigorous check for distance-too-far in inffast.c
- - Add Z_BLOCK flush option to return from inflate at block boundary
- - Set strm->data_type on return from inflate
- - Indicate bits unused, if at block boundary, and if in last block
- - Replace size_t with ptrdiff_t in crc32.c, and check for correct size
- - Add condition so old NO_DEFLATE define still works for compatibility
- - FAQ update regarding the Windows DLL [Truta]
- - INDEX update: add qnx entry, remove aix entry [Truta]
- - Install zlib.3 into mandir [Wilson]
- - Move contrib/zlib_dll_FAQ.txt to win32/DLL_FAQ.txt; update [Truta]
- - Adapt the zlib interface to the new DLL convention guidelines [Truta]
- - Introduce ZLIB_WINAPI macro to allow the export of functions using
- the WINAPI calling convention, for Visual Basic [Vollant, Truta]
- - Update msdos and win32 scripts and makefiles [Truta]
- - Export symbols by name, not by ordinal, in win32/zlib.def [Truta]
- - Add contrib/ada [Anisimkov]
- - Move asm files from contrib/vstudio/vc70_32 to contrib/asm386 [Truta]
- - Rename contrib/asm386 to contrib/masmx86 [Truta, Vollant]
- - Add contrib/masm686 [Truta]
- - Fix offsets in contrib/inflate86 and contrib/masmx86/inffas32.asm
- [Truta, Vollant]
- - Update contrib/delphi; rename to contrib/pascal; add example [Truta]
- - Remove contrib/delphi2; add a new contrib/delphi [Truta]
- - Avoid inclusion of the nonstandard <memory.h> in contrib/iostream,
- and fix some method prototypes [Truta]
- - Fix the ZCR_SEED2 constant to avoid warnings in contrib/minizip
- [Truta]
- - Avoid the use of backslash () in contrib/minizip [Vollant]
- - Fix file time handling in contrib/untgz; update makefiles [Truta]
- - Update contrib/vstudio/vc70_32 to comply with the new DLL guidelines
- [Vollant]
- - Remove contrib/vstudio/vc15_16 [Vollant]
- - Rename contrib/vstudio/vc70_32 to contrib/vstudio/vc7 [Truta]
- - Update README.contrib [Truta]
- - Invert the assignment order of match_head and s->prev[...] in
- INSERT_STRING [Truta]
- - Compare TOO_FAR with 32767 instead of 32768, to avoid 16-bit warnings
- [Truta]
- - Compare function pointers with 0, not with NULL or Z_NULL [Truta]
- - Fix prototype of syncsearch in inflate.c [Truta]
- - Introduce ASMINF macro to be enabled when using an ASM implementation
- of inflate_fast [Truta]
- - Change NO_DEFLATE to NO_GZCOMPRESS [Truta]
- - Modify test_gzio in example.c to take a single file name as a
- parameter [Truta]
- - Exit the example.c program if gzopen fails [Truta]
- - Add type casts around strlen in example.c [Truta]
- - Remove casting to sizeof in minigzip.c; give a proper type
- to the variable compared with SUFFIX_LEN [Truta]
- - Update definitions of STDC and STDC99 in zconf.h [Truta]
- - Synchronize zconf.h with the new Windows DLL interface [Truta]
- - Use SYS16BIT instead of __32BIT__ to distinguish between
- 16- and 32-bit platforms [Truta]
- - Use far memory allocators in small 16-bit memory models for
- Turbo C [Truta]
- - Add info about the use of ASMV, ASMINF and ZLIB_WINAPI in
- zlibCompileFlags [Truta]
- - Cygwin has vsnprintf [Wilson]
- - In Windows16, OS_CODE is 0, as in MSDOS [Truta]
- - In Cygwin, OS_CODE is 3 (Unix), not 11 (Windows32) [Wilson]
- Changes in 1.2.0.4 (10 August 2003)
- - Minor FAQ updates
- - Be more strict when checking inflateInit2's windowBits parameter
- - Change NO_GUNZIP compile option to NO_GZIP to cover deflate as well
- - Add gzip wrapper option to deflateInit2 using windowBits
- - Add updated QNX rule in configure and qnx directory [Bonnefoy]
- - Make inflate distance-too-far checks more rigorous
- - Clean up FAR usage in inflate
- - Add casting to sizeof() in gzio.c and minigzip.c
- Changes in 1.2.0.3 (19 July 2003)
- - Fix silly error in gzungetc() implementation [Vollant]
- - Update contrib/minizip and contrib/vstudio [Vollant]
- - Fix printf format in example.c
- - Correct cdecl support in zconf.in.h [Anisimkov]
- - Minor FAQ updates
- Changes in 1.2.0.2 (13 July 2003)
- - Add ZLIB_VERNUM in zlib.h for numerical preprocessor comparisons
- - Attempt to avoid warnings in crc32.c for pointer-int conversion
- - Add AIX to configure, remove aix directory [Bakker]
- - Add some casts to minigzip.c
- - Improve checking after insecure sprintf() or vsprintf() calls
- - Remove #elif's from crc32.c
- - Change leave label to inf_leave in inflate.c and infback.c to avoid
- library conflicts
- - Remove inflate gzip decoding by default--only enable gzip decoding by
- special request for stricter backward compatibility
- - Add zlibCompileFlags() function to return compilation information
- - More typecasting in deflate.c to avoid warnings
- - Remove leading underscore from _Capital #defines [Truta]
- - Fix configure to link shared library when testing
- - Add some Windows CE target adjustments [Mai]
- - Remove #define ZLIB_DLL in zconf.h [Vollant]
- - Add zlib.3 [Rodgers]
- - Update RFC URL in deflate.c and algorithm.txt [Mai]
- - Add zlib_dll_FAQ.txt to contrib [Truta]
- - Add UL to some constants [Truta]
- - Update minizip and vstudio [Vollant]
- - Remove vestigial NEED_DUMMY_RETURN from zconf.in.h
- - Expand use of NO_DUMMY_DECL to avoid all dummy structures
- - Added iostream3 to contrib [Schwardt]
- - Replace rewind() with fseek() for WinCE [Truta]
- - Improve setting of zlib format compression level flags
- - Report 0 for huffman and rle strategies and for level == 0 or 1
- - Report 2 only for level == 6
- - Only deal with 64K limit when necessary at compile time [Truta]
- - Allow TOO_FAR check to be turned off at compile time [Truta]
- - Add gzclearerr() function [Souza]
- - Add gzungetc() function
- Changes in 1.2.0.1 (17 March 2003)
- - Add Z_RLE strategy for run-length encoding [Truta]
- - When Z_RLE requested, restrict matches to distance one
- - Update zlib.h, minigzip.c, gzopen(), gzdopen() for Z_RLE
- - Correct FASTEST compilation to allow level == 0
- - Clean up what gets compiled for FASTEST
- - Incorporate changes to zconf.in.h [Vollant]
- - Refine detection of Turbo C need for dummy returns
- - Refine ZLIB_DLL compilation
- - Include additional header file on VMS for off_t typedef
- - Try to use _vsnprintf where it supplants vsprintf [Vollant]
- - Add some casts in inffast.c
- - Enchance comments in zlib.h on what happens if gzprintf() tries to
- write more than 4095 bytes before compression
- - Remove unused state from inflateBackEnd()
- - Remove exit(0) from minigzip.c, example.c
- - Get rid of all those darn tabs
- - Add "check" target to Makefile.in that does the same thing as "test"
- - Add "mostlyclean" and "maintainer-clean" targets to Makefile.in
- - Update contrib/inflate86 [Anderson]
- - Update contrib/testzlib, contrib/vstudio, contrib/minizip [Vollant]
- - Add msdos and win32 directories with makefiles [Truta]
- - More additions and improvements to the FAQ
- Changes in 1.2.0 (9 March 2003)
- - New and improved inflate code
- - About 20% faster
- - Does not allocate 32K window unless and until needed
- - Automatically detects and decompresses gzip streams
- - Raw inflate no longer needs an extra dummy byte at end
- - Added inflateBack functions using a callback interface--even faster
- than inflate, useful for file utilities (gzip, zip)
- - Added inflateCopy() function to record state for random access on
- externally generated deflate streams (e.g. in gzip files)
- - More readable code (I hope)
- - New and improved crc32()
- - About 50% faster, thanks to suggestions from Rodney Brown
- - Add deflateBound() and compressBound() functions
- - Fix memory leak in deflateInit2()
- - Permit setting dictionary for raw deflate (for parallel deflate)
- - Fix const declaration for gzwrite()
- - Check for some malloc() failures in gzio.c
- - Fix bug in gzopen() on single-byte file 0x1f
- - Fix bug in gzread() on concatenated file with 0x1f at end of buffer
- and next buffer doesn't start with 0x8b
- - Fix uncompress() to return Z_DATA_ERROR on truncated input
- - Free memory at end of example.c
- - Remove MAX #define in trees.c (conflicted with some libraries)
- - Fix static const's in deflate.c, gzio.c, and zutil.[ch]
- - Declare malloc() and free() in gzio.c if STDC not defined
- - Use malloc() instead of calloc() in zutil.c if int big enough
- - Define STDC for AIX
- - Add aix/ with approach for compiling shared library on AIX
- - Add HP-UX support for shared libraries in configure
- - Add OpenUNIX support for shared libraries in configure
- - Use $cc instead of gcc to build shared library
- - Make prefix directory if needed when installing
- - Correct Macintosh avoidance of typedef Byte in zconf.h
- - Correct Turbo C memory allocation when under Linux
- - Use libz.a instead of -lz in Makefile (assure use of compiled library)
- - Update configure to check for snprintf or vsnprintf functions and their
- return value, warn during make if using an insecure function
- - Fix configure problem with compile-time knowledge of HAVE_UNISTD_H that
- is lost when library is used--resolution is to build new zconf.h
- - Documentation improvements (in zlib.h):
- - Document raw deflate and inflate
- - Update RFCs URL
- - Point out that zlib and gzip formats are different
- - Note that Z_BUF_ERROR is not fatal
- - Document string limit for gzprintf() and possible buffer overflow
- - Note requirement on avail_out when flushing
- - Note permitted values of flush parameter of inflate()
- - Add some FAQs (and even answers) to the FAQ
- - Add contrib/inflate86/ for x86 faster inflate
- - Add contrib/blast/ for PKWare Data Compression Library decompression
- - Add contrib/puff/ simple inflate for deflate format description
- Changes in 1.1.4 (11 March 2002)
- - ZFREE was repeated on same allocation on some error conditions.
- This creates a security problem described in
- http://www.zlib.org/advisory-2002-03-11.txt
- - Returned incorrect error (Z_MEM_ERROR) on some invalid data
- - Avoid accesses before window for invalid distances with inflate window
- less than 32K.
- - force windowBits > 8 to avoid a bug in the encoder for a window size
- of 256 bytes. (A complete fix will be available in 1.1.5).
- Changes in 1.1.3 (9 July 1998)
- - fix "an inflate input buffer bug that shows up on rare but persistent
- occasions" (Mark)
- - fix gzread and gztell for concatenated .gz files (Didier Le Botlan)
- - fix gzseek(..., SEEK_SET) in write mode
- - fix crc check after a gzeek (Frank Faubert)
- - fix miniunzip when the last entry in a zip file is itself a zip file
- (J Lillge)
- - add contrib/asm586 and contrib/asm686 (Brian Raiter)
- See http://www.muppetlabs.com/~breadbox/software/assembly.html
- - add support for Delphi 3 in contrib/delphi (Bob Dellaca)
- - add support for C++Builder 3 and Delphi 3 in contrib/delphi2 (Davide Moretti)
- - do not exit prematurely in untgz if 0 at start of block (Magnus Holmgren)
- - use macro EXTERN instead of extern to support DLL for BeOS (Sander Stoks)
- - added a FAQ file
- - Support gzdopen on Mac with Metrowerks (Jason Linhart)
- - Do not redefine Byte on Mac (Brad Pettit & Jason Linhart)
- - define SEEK_END too if SEEK_SET is not defined (Albert Chin-A-Young)
- - avoid some warnings with Borland C (Tom Tanner)
- - fix a problem in contrib/minizip/zip.c for 16-bit MSDOS (Gilles Vollant)
- - emulate utime() for WIN32 in contrib/untgz (Gilles Vollant)
- - allow several arguments to configure (Tim Mooney, Frodo Looijaard)
- - use libdir and includedir in Makefile.in (Tim Mooney)
- - support shared libraries on OSF1 V4 (Tim Mooney)
- - remove so_locations in "make clean" (Tim Mooney)
- - fix maketree.c compilation error (Glenn, Mark)
- - Python interface to zlib now in Python 1.5 (Jeremy Hylton)
- - new Makefile.riscos (Rich Walker)
- - initialize static descriptors in trees.c for embedded targets (Nick Smith)
- - use "foo-gz" in example.c for RISCOS and VMS (Nick Smith)
- - add the OS/2 files in Makefile.in too (Andrew Zabolotny)
- - fix fdopen and halloc macros for Microsoft C 6.0 (Tom Lane)
- - fix maketree.c to allow clean compilation of inffixed.h (Mark)
- - fix parameter check in deflateCopy (Gunther Nikl)
- - cleanup trees.c, use compressed_len only in debug mode (Christian Spieler)
- - Many portability patches by Christian Spieler:
- . zutil.c, zutil.h: added "const" for zmem*
- . Make_vms.com: fixed some typos
- . Make_vms.com: msdos/Makefile.*: removed zutil.h from some dependency lists
- . msdos/Makefile.msc: remove "default rtl link library" info from obj files
- . msdos/Makefile.*: use model-dependent name for the built zlib library
- . msdos/Makefile.emx, nt/Makefile.emx, nt/Makefile.gcc:
- new makefiles, for emx (DOS/OS2), emx&rsxnt and mingw32 (Windows 9x / NT)
- - use define instead of typedef for Bytef also for MSC small/medium (Tom Lane)
- - replace __far with _far for better portability (Christian Spieler, Tom Lane)
- - fix test for errno.h in configure (Tim Newsham)
- Changes in 1.1.2 (19 March 98)
- - added contrib/minzip, mini zip and unzip based on zlib (Gilles Vollant)
- See http://www.winimage.com/zLibDll/unzip.html
- - preinitialize the inflate tables for fixed codes, to make the code
- completely thread safe (Mark)
- - some simplifications and slight speed-up to the inflate code (Mark)
- - fix gzeof on non-compressed files (Allan Schrum)
- - add -std1 option in configure for OSF1 to fix gzprintf (Martin Mokrejs)
- - use default value of 4K for Z_BUFSIZE for 16-bit MSDOS (Tim Wegner + Glenn)
- - added os2/Makefile.def and os2/zlib.def (Andrew Zabolotny)
- - add shared lib support for UNIX_SV4.2MP (MATSUURA Takanori)
- - do not wrap extern "C" around system includes (Tom Lane)
- - mention zlib binding for TCL in README (Andreas Kupries)
- - added amiga/Makefile.pup for Amiga powerUP SAS/C PPC (Andreas Kleinert)
- - allow "make install prefix=..." even after configure (Glenn Randers-Pehrson)
- - allow "configure --prefix $HOME" (Tim Mooney)
- - remove warnings in example.c and gzio.c (Glenn Randers-Pehrson)
- - move Makefile.sas to amiga/Makefile.sas
- Changes in 1.1.1 (27 Feb 98)
- - fix macros _tr_tally_* in deflate.h for debug mode (Glenn Randers-Pehrson)
- - remove block truncation heuristic which had very marginal effect for zlib
- (smaller lit_bufsize than in gzip 1.2.4) and degraded a little the
- compression ratio on some files. This also allows inlining _tr_tally for
- matches in deflate_slow.
- - added msdos/Makefile.w32 for WIN32 Microsoft Visual C++ (Bob Frazier)
- Changes in 1.1.0 (24 Feb 98)
- - do not return STREAM_END prematurely in inflate (John Bowler)
- - revert to the zlib 1.0.8 inflate to avoid the gcc 2.8.0 bug (Jeremy Buhler)
- - compile with -DFASTEST to get compression code optimized for speed only
- - in minigzip, try mmap'ing the input file first (Miguel Albrecht)
- - increase size of I/O buffers in minigzip.c and gzio.c (not a big gain
- on Sun but significant on HP)
- - add a pointer to experimental unzip library in README (Gilles Vollant)
- - initialize variable gcc in configure (Chris Herborth)
- Changes in 1.0.9 (17 Feb 1998)
- - added gzputs and gzgets functions
- - do not clear eof flag in gzseek (Mark Diekhans)
- - fix gzseek for files in transparent mode (Mark Diekhans)
- - do not assume that vsprintf returns the number of bytes written (Jens Krinke)
- - replace EXPORT with ZEXPORT to avoid conflict with other programs
- - added compress2 in zconf.h, zlib.def, zlib.dnt
- - new asm code from Gilles Vollant in contrib/asm386
- - simplify the inflate code (Mark):
- . Replace ZALLOC's in huft_build() with single ZALLOC in inflate_blocks_new()
- . ZALLOC the length list in inflate_trees_fixed() instead of using stack
- . ZALLOC the value area for huft_build() instead of using stack
- . Simplify Z_FINISH check in inflate()
- - Avoid gcc 2.8.0 comparison bug a little differently than zlib 1.0.8
- - in inftrees.c, avoid cc -O bug on HP (Farshid Elahi)
- - in zconf.h move the ZLIB_DLL stuff earlier to avoid problems with
- the declaration of FAR (Gilles VOllant)
- - install libz.so* with mode 755 (executable) instead of 644 (Marc Lehmann)
- - read_buf buf parameter of type Bytef* instead of charf*
- - zmemcpy parameters are of type Bytef*, not charf* (Joseph Strout)
- - do not redeclare unlink in minigzip.c for WIN32 (John Bowler)
- - fix check for presence of directories in "make install" (Ian Willis)
- Changes in 1.0.8 (27 Jan 1998)
- - fixed offsets in contrib/asm386/gvmat32.asm (Gilles Vollant)
- - fix gzgetc and gzputc for big endian systems (Markus Oberhumer)
- - added compress2() to allow setting the compression level
- - include sys/types.h to get off_t on some systems (Marc Lehmann & QingLong)
- - use constant arrays for the static trees in trees.c instead of computing
- them at run time (thanks to Ken Raeburn for this suggestion). To create
- trees.h, compile with GEN_TREES_H and run "make test".
- - check return code of example in "make test" and display result
- - pass minigzip command line options to file_compress
- - simplifying code of inflateSync to avoid gcc 2.8 bug
- - support CC="gcc -Wall" in configure -s (QingLong)
- - avoid a flush caused by ftell in gzopen for write mode (Ken Raeburn)
- - fix test for shared library support to avoid compiler warnings
- - zlib.lib -> zlib.dll in msdos/zlib.rc (Gilles Vollant)
- - check for TARGET_OS_MAC in addition to MACOS (Brad Pettit)
- - do not use fdopen for Metrowerks on Mac (Brad Pettit))
- - add checks for gzputc and gzputc in example.c
- - avoid warnings in gzio.c and deflate.c (Andreas Kleinert)
- - use const for the CRC table (Ken Raeburn)
- - fixed "make uninstall" for shared libraries
- - use Tracev instead of Trace in infblock.c
- - in example.c use correct compressed length for test_sync
- - suppress +vnocompatwarnings in configure for HPUX (not always supported)
- Changes in 1.0.7 (20 Jan 1998)
- - fix gzseek which was broken in write mode
- - return error for gzseek to negative absolute position
- - fix configure for Linux (Chun-Chung Chen)
- - increase stack space for MSC (Tim Wegner)
- - get_crc_table and inflateSyncPoint are EXPORTed (Gilles Vollant)
- - define EXPORTVA for gzprintf (Gilles Vollant)
- - added man page zlib.3 (Rick Rodgers)
- - for contrib/untgz, fix makedir() and improve Makefile
- - check gzseek in write mode in example.c
- - allocate extra buffer for seeks only if gzseek is actually called
- - avoid signed/unsigned comparisons (Tim Wegner, Gilles Vollant)
- - add inflateSyncPoint in zconf.h
- - fix list of exported functions in nt/zlib.dnt and mdsos/zlib.def
- Changes in 1.0.6 (19 Jan 1998)
- - add functions gzprintf, gzputc, gzgetc, gztell, gzeof, gzseek, gzrewind and
- gzsetparams (thanks to Roland Giersig and Kevin Ruland for some of this code)
- - Fix a deflate bug occurring only with compression level 0 (thanks to
- Andy Buckler for finding this one).
- - In minigzip, pass transparently also the first byte for .Z files.
- - return Z_BUF_ERROR instead of Z_OK if output buffer full in uncompress()
- - check Z_FINISH in inflate (thanks to Marc Schluper)
- - Implement deflateCopy (thanks to Adam Costello)
- - make static libraries by default in configure, add --shared option.
- - move MSDOS or Windows specific files to directory msdos
- - suppress the notion of partial flush to simplify the interface
- (but the symbol Z_PARTIAL_FLUSH is kept for compatibility with 1.0.4)
- - suppress history buffer provided by application to simplify the interface
- (this feature was not implemented anyway in 1.0.4)
- - next_in and avail_in must be initialized before calling inflateInit or
- inflateInit2
- - add EXPORT in all exported functions (for Windows DLL)
- - added Makefile.nt (thanks to Stephen Williams)
- - added the unsupported "contrib" directory:
- contrib/asm386/ by Gilles Vollant <info@winimage.com>
- 386 asm code replacing longest_match().
- contrib/iostream/ by Kevin Ruland <kevin@rodin.wustl.edu>
- A C++ I/O streams interface to the zlib gz* functions
- contrib/iostream2/ by Tyge L鴙set <Tyge.Lovset@cmr.no>
- Another C++ I/O streams interface
- contrib/untgz/ by "Pedro A. Aranda Gutiirrez" <paag@tid.es>
- A very simple tar.gz file extractor using zlib
- contrib/visual-basic.txt by Carlos Rios <c_rios@sonda.cl>
- How to use compress(), uncompress() and the gz* functions from VB.
- - pass params -f (filtered data), -h (huffman only), -1 to -9 (compression
- level) in minigzip (thanks to Tom Lane)
- - use const for rommable constants in deflate
- - added test for gzseek and gztell in example.c
- - add undocumented function inflateSyncPoint() (hack for Paul Mackerras)
- - add undocumented function zError to convert error code to string
- (for Tim Smithers)
- - Allow compilation of gzio with -DNO_DEFLATE to avoid the compression code.
- - Use default memcpy for Symantec MSDOS compiler.
- - Add EXPORT keyword for check_func (needed for Windows DLL)
- - add current directory to LD_LIBRARY_PATH for "make test"
- - create also a link for libz.so.1
- - added support for FUJITSU UXP/DS (thanks to Toshiaki Nomura)
- - use $(SHAREDLIB) instead of libz.so in Makefile.in (for HPUX)
- - added -soname for Linux in configure (Chun-Chung Chen,
- - assign numbers to the exported functions in zlib.def (for Windows DLL)
- - add advice in zlib.h for best usage of deflateSetDictionary
- - work around compiler bug on Atari (cast Z_NULL in call of s->checkfn)
- - allow compilation with ANSI keywords only enabled for TurboC in large model
- - avoid "versionString"[0] (Borland bug)
- - add NEED_DUMMY_RETURN for Borland
- - use variable z_verbose for tracing in debug mode (L. Peter Deutsch).
- - allow compilation with CC
- - defined STDC for OS/2 (David Charlap)
- - limit external names to 8 chars for MVS (Thomas Lund)
- - in minigzip.c, use static buffers only for 16-bit systems
- - fix suffix check for "minigzip -d foo.gz"
- - do not return an error for the 2nd of two consecutive gzflush() (Felix Lee)
- - use _fdopen instead of fdopen for MSC >= 6.0 (Thomas Fanslau)
- - added makelcc.bat for lcc-win32 (Tom St Denis)
- - in Makefile.dj2, use copy and del instead of install and rm (Frank Donahoe)
- - Avoid expanded $Id: ChangeLog,v 1.3 2005/08/27 17:22:42 drolon Exp $. Use "rcs -kb" or "cvs admin -kb" to avoid Id expansion.
- - check for unistd.h in configure (for off_t)
- - remove useless check parameter in inflate_blocks_free
- - avoid useless assignment of s->check to itself in inflate_blocks_new
- - do not flush twice in gzclose (thanks to Ken Raeburn)
- - rename FOPEN as F_OPEN to avoid clash with /usr/include/sys/file.h
- - use NO_ERRNO_H instead of enumeration of operating systems with errno.h
- - work around buggy fclose on pipes for HP/UX
- - support zlib DLL with BORLAND C++ 5.0 (thanks to Glenn Randers-Pehrson)
- - fix configure if CC is already equal to gcc
- Changes in 1.0.5 (3 Jan 98)
- - Fix inflate to terminate gracefully when fed corrupted or invalid data
- - Use const for rommable constants in inflate
- - Eliminate memory leaks on error conditions in inflate
- - Removed some vestigial code in inflate
- - Update web address in README
- Changes in 1.0.4 (24 Jul 96)
- - In very rare conditions, deflate(s, Z_FINISH) could fail to produce an EOF
- bit, so the decompressor could decompress all the correct data but went
- on to attempt decompressing extra garbage data. This affected minigzip too.
- - zlibVersion and gzerror return const char* (needed for DLL)
- - port to RISCOS (no fdopen, no multiple dots, no unlink, no fileno)
- - use z_error only for DEBUG (avoid problem with DLLs)
- Changes in 1.0.3 (2 Jul 96)
- - use z_streamp instead of z_stream *, which is now a far pointer in MSDOS
- small and medium models; this makes the library incompatible with previous
- versions for these models. (No effect in large model or on other systems.)
- - return OK instead of BUF_ERROR if previous deflate call returned with
- avail_out as zero but there is nothing to do
- - added memcmp for non STDC compilers
- - define NO_DUMMY_DECL for more Mac compilers (.h files merged incorrectly)
- - define __32BIT__ if __386__ or i386 is defined (pb. with Watcom and SCO)
- - better check for 16-bit mode MSC (avoids problem with Symantec)
- Changes in 1.0.2 (23 May 96)
- - added Windows DLL support
- - added a function zlibVersion (for the DLL support)
- - fixed declarations using Bytef in infutil.c (pb with MSDOS medium model)
- - Bytef is define's instead of typedef'd only for Borland C
- - avoid reading uninitialized memory in example.c
- - mention in README that the zlib format is now RFC1950
- - updated Makefile.dj2
- - added algorithm.doc
- Changes in 1.0.1 (20 May 96) [1.0 skipped to avoid confusion]
- - fix array overlay in deflate.c which sometimes caused bad compressed data
- - fix inflate bug with empty stored block
- - fix MSDOS medium model which was broken in 0.99
- - fix deflateParams() which could generated bad compressed data.
- - Bytef is define'd instead of typedef'ed (work around Borland bug)
- - added an INDEX file
- - new makefiles for DJGPP (Makefile.dj2), 32-bit Borland (Makefile.b32),
- Watcom (Makefile.wat), Amiga SAS/C (Makefile.sas)
- - speed up adler32 for modern machines without auto-increment
- - added -ansi for IRIX in configure
- - static_init_done in trees.c is an int
- - define unlink as delete for VMS
- - fix configure for QNX
- - add configure branch for SCO and HPUX
- - avoid many warnings (unused variables, dead assignments, etc...)
- - no fdopen for BeOS
- - fix the Watcom fix for 32 bit mode (define FAR as empty)
- - removed redefinition of Byte for MKWERKS
- - work around an MWKERKS bug (incorrect merge of all .h files)
- Changes in 0.99 (27 Jan 96)
- - allow preset dictionary shared between compressor and decompressor
- - allow compression level 0 (no compression)
- - add deflateParams in zlib.h: allow dynamic change of compression level
- and compression strategy.
- - test large buffers and deflateParams in example.c
- - add optional "configure" to build zlib as a shared library
- - suppress Makefile.qnx, use configure instead
- - fixed deflate for 64-bit systems (detected on Cray)
- - fixed inflate_blocks for 64-bit systems (detected on Alpha)
- - declare Z_DEFLATED in zlib.h (possible parameter for deflateInit2)
- - always return Z_BUF_ERROR when deflate() has nothing to do
- - deflateInit and inflateInit are now macros to allow version checking
- - prefix all global functions and types with z_ with -DZ_PREFIX
- - make falloc completely reentrant (inftrees.c)
- - fixed very unlikely race condition in ct_static_init
- - free in reverse order of allocation to help memory manager
- - use zlib-1.0/* instead of zlib/* inside the tar.gz
- - make zlib warning-free with "gcc -O3 -Wall -Wwrite-strings -Wpointer-arith
- -Wconversion -Wstrict-prototypes -Wmissing-prototypes"
- - allow gzread on concatenated .gz files
- - deflateEnd now returns Z_DATA_ERROR if it was premature
- - deflate is finally (?) fully deterministic (no matches beyond end of input)
- - Document Z_SYNC_FLUSH
- - add uninstall in Makefile
- - Check for __cpluplus in zlib.h
- - Better test in ct_align for partial flush
- - avoid harmless warnings for Borland C++
- - initialize hash_head in deflate.c
- - avoid warning on fdopen (gzio.c) for HP cc -Aa
- - include stdlib.h for STDC compilers
- - include errno.h for Cray
- - ignore error if ranlib doesn't exist
- - call ranlib twice for NeXTSTEP
- - use exec_prefix instead of prefix for libz.a
- - renamed ct_* as _tr_* to avoid conflict with applications
- - clear z->msg in inflateInit2 before any error return
- - initialize opaque in example.c, gzio.c, deflate.c and inflate.c
- - fixed typo in zconf.h (_GNUC__ => __GNUC__)
- - check for WIN32 in zconf.h and zutil.c (avoid farmalloc in 32-bit mode)
- - fix typo in Make_vms.com (f$trnlnm -> f$getsyi)
- - in fcalloc, normalize pointer if size > 65520 bytes
- - don't use special fcalloc for 32 bit Borland C++
- - use STDC instead of __GO32__ to avoid redeclaring exit, calloc, etc...
- - use Z_BINARY instead of BINARY
- - document that gzclose after gzdopen will close the file
- - allow "a" as mode in gzopen.
- - fix error checking in gzread
- - allow skipping .gz extra-field on pipes
- - added reference to Perl interface in README
- - put the crc table in FAR data (I dislike more and more the medium model :)
- - added get_crc_table
- - added a dimension to all arrays (Borland C can't count).
- - workaround Borland C bug in declaration of inflate_codes_new & inflate_fast
- - guard against multiple inclusion of *.h (for precompiled header on Mac)
- - Watcom C pretends to be Microsoft C small model even in 32 bit mode.
- - don't use unsized arrays to avoid silly warnings by Visual C++:
- warning C4746: 'inflate_mask' : unsized array treated as '__far'
- (what's wrong with far data in far model?).
- - define enum out of inflate_blocks_state to allow compilation with C++
- Changes in 0.95 (16 Aug 95)
- - fix MSDOS small and medium model (now easier to adapt to any compiler)
- - inlined send_bits
- - fix the final (:-) bug for deflate with flush (output was correct but
- not completely flushed in rare occasions).
- - default window size is same for compression and decompression
- (it's now sufficient to set MAX_WBITS in zconf.h).
- - voidp -> voidpf and voidnp -> voidp (for consistency with other
- typedefs and because voidnp was not near in large model).
- Changes in 0.94 (13 Aug 95)
- - support MSDOS medium model
- - fix deflate with flush (could sometimes generate bad output)
- - fix deflateReset (zlib header was incorrectly suppressed)
- - added support for VMS
- - allow a compression level in gzopen()
- - gzflush now calls fflush
- - For deflate with flush, flush even if no more input is provided.
- - rename libgz.a as libz.a
- - avoid complex expression in infcodes.c triggering Turbo C bug
- - work around a problem with gcc on Alpha (in INSERT_STRING)
- - don't use inline functions (problem with some gcc versions)
- - allow renaming of Byte, uInt, etc... with #define.
- - avoid warning about (unused) pointer before start of array in deflate.c
- - avoid various warnings in gzio.c, example.c, infblock.c, adler32.c, zutil.c
- - avoid reserved word 'new' in trees.c
- Changes in 0.93 (25 June 95)
- - temporarily disable inline functions
- - make deflate deterministic
- - give enough lookahead for PARTIAL_FLUSH
- - Set binary mode for stdin/stdout in minigzip.c for OS/2
- - don't even use signed char in inflate (not portable enough)
- - fix inflate memory leak for segmented architectures
- Changes in 0.92 (3 May 95)
- - don't assume that char is signed (problem on SGI)
- - Clear bit buffer when starting a stored block
- - no memcpy on Pyramid
- - suppressed inftest.c
- - optimized fill_window, put longest_match inline for gcc
- - optimized inflate on stored blocks.
- - untabify all sources to simplify patches
- Changes in 0.91 (2 May 95)
- - Default MEM_LEVEL is 8 (not 9 for Unix) as documented in zlib.h
- - Document the memory requirements in zconf.h
- - added "make install"
- - fix sync search logic in inflateSync
- - deflate(Z_FULL_FLUSH) now works even if output buffer too short
- - after inflateSync, don't scare people with just "lo world"
- - added support for DJGPP
- Changes in 0.9 (1 May 95)
- - don't assume that zalloc clears the allocated memory (the TurboC bug
- was Mark's bug after all :)
- - let again gzread copy uncompressed data unchanged (was working in 0.71)
- - deflate(Z_FULL_FLUSH), inflateReset and inflateSync are now fully implemented
- - added a test of inflateSync in example.c
- - moved MAX_WBITS to zconf.h because users might want to change that.
- - document explicitly that zalloc(64K) on MSDOS must return a normalized
- pointer (zero offset)
- - added Makefiles for Microsoft C, Turbo C, Borland C++
- - faster crc32()
- Changes in 0.8 (29 April 95)
- - added fast inflate (inffast.c)
- - deflate(Z_FINISH) now returns Z_STREAM_END when done. Warning: this
- is incompatible with previous versions of zlib which returned Z_OK.
- - work around a TurboC compiler bug (bad code for b << 0, see infutil.h)
- (actually that was not a compiler bug, see 0.81 above)
- - gzread no longer reads one extra byte in certain cases
- - In gzio destroy(), don't reference a freed structure
- - avoid many warnings for MSDOS
- - avoid the ERROR symbol which is used by MS Windows
- Changes in 0.71 (14 April 95)
- - Fixed more MSDOS compilation problems :( There is still a bug with
- TurboC large model.
- Changes in 0.7 (14 April 95)
- - Added full inflate support.
- - Simplified the crc32() interface. The pre- and post-conditioning
- (one's complement) is now done inside crc32(). WARNING: this is
- incompatible with previous versions; see zlib.h for the new usage.
- Changes in 0.61 (12 April 95)
- - workaround for a bug in TurboC. example and minigzip now work on MSDOS.
- Changes in 0.6 (11 April 95)
- - added minigzip.c
- - added gzdopen to reopen a file descriptor as gzFile
- - added transparent reading of non-gziped files in gzread.
- - fixed bug in gzread (don't read crc as data)
- - fixed bug in destroy (gzio.c) (don't return Z_STREAM_END for gzclose).
- - don't allocate big arrays in the stack (for MSDOS)
- - fix some MSDOS compilation problems
- Changes in 0.5:
- - do real compression in deflate.c. Z_PARTIAL_FLUSH is supported but
- not yet Z_FULL_FLUSH.
- - support decompression but only in a single step (forced Z_FINISH)
- - added opaque object for zalloc and zfree.
- - added deflateReset and inflateReset
- - added a variable zlib_version for consistency checking.
- - renamed the 'filter' parameter of deflateInit2 as 'strategy'.
- Added Z_FILTERED and Z_HUFFMAN_ONLY constants.
- Changes in 0.4:
- - avoid "zip" everywhere, use zlib instead of ziplib.
- - suppress Z_BLOCK_FLUSH, interpret Z_PARTIAL_FLUSH as block flush
- if compression method == 8.
- - added adler32 and crc32
- - renamed deflateOptions as deflateInit2, call one or the other but not both
- - added the method parameter for deflateInit2.
- - added inflateInit2
- - simplied considerably deflateInit and inflateInit by not supporting
- user-provided history buffer. This is supported only in deflateInit2
- and inflateInit2.
- Changes in 0.3:
- - prefix all macro names with Z_
- - use Z_FINISH instead of deflateEnd to finish compression.
- - added Z_HUFFMAN_ONLY
- - added gzerror()