1 

     2                 ChangeLog file for zlib

     3 

     4 Changes in 1.2.5 (19 Apr 2010)

     5 - Disable visibility attribute in win32/Makefile.gcc [Bar-Lev]

     6 - Default to libdir as sharedlibdir in configure [Nieder]

     7 - Update copyright dates on modified source files

     8 - Update trees.c to be able to generate modified trees.h

     9 - Exit configure for MinGW, suggesting win32/Makefile.gcc

    10 

    11 Changes in 1.2.4.5 (18 Apr 2010)

    12 - Set sharedlibdir in configure [Torok]

    13 - Set LDFLAGS in Makefile.in [Bar-Lev]

    14 - Avoid mkdir objs race condition in Makefile.in [Bowler]

    15 - Add ZLIB_INTERNAL in front of internal inter-module functions and arrays

    16 - Define ZLIB_INTERNAL to hide internal functions and arrays for GNU C

    17 - Don't use hidden attribute when it is a warning generator (e.g. Solaris)

    18 

    19 Changes in 1.2.4.4 (18 Apr 2010)

    20 - Fix CROSS_PREFIX executable testing, CHOST extract, mingw* [Torok]

    21 - Undefine _LARGEFILE64_SOURCE in zconf.h if it is zero, but not if empty

    22 - Try to use bash or ksh regardless of functionality of /bin/sh

    23 - Fix configure incompatibility with NetBSD sh

    24 - Remove attempt to run under bash or ksh since have better NetBSD fix

    25 - Fix win32/Makefile.gcc for MinGW [Bar-Lev]

    26 - Add diagnostic messages when using CROSS_PREFIX in configure

    27 - Added --sharedlibdir option to configure [Weigelt]

    28 - Use hidden visibility attribute when available [Frysinger]

    29 

    30 Changes in 1.2.4.3 (10 Apr 2010)

    31 - Only use CROSS_PREFIX in configure for ar and ranlib if they exist

    32 - Use CROSS_PREFIX for nm [Bar-Lev]

    33 - Assume _LARGEFILE64_SOURCE defined is equivalent to true

    34 - Avoid use of undefined symbols in #if with && and ||

    35 - Make *64 prototypes in gzguts.h consistent with functions

    36 - Add -shared load option for MinGW in configure [Bowler]

    37 - Move z_off64_t to public interface, use instead of off64_t

    38 - Remove ! from shell test in configure (not portable to Solaris)

    39 - Change +0 macro tests to -0 for possibly increased portability

    40 

    41 Changes in 1.2.4.2 (9 Apr 2010)

    42 - Add consistent carriage returns to readme.txt's in masmx86 and masmx64

    43 - Really provide prototypes for *64 functions when building without LFS

    44 - Only define unlink() in minigzip.c if unistd.h not included

    45 - Update README to point to contrib/vstudio project files

    46 - Move projects/vc6 to old/ and remove projects/

    47 - Include stdlib.h in minigzip.c for setmode() definition under WinCE

    48 - Clean up assembler builds in win32/Makefile.msc [Rowe]

    49 - Include sys/types.h for Microsoft for off_t definition

    50 - Fix memory leak on error in gz_open()

    51 - Symbolize nm as $NM in configure [Weigelt]

    52 - Use TEST_LDSHARED instead of LDSHARED to link test programs [Weigelt]

    53 - Add +0 to _FILE_OFFSET_BITS and _LFS64_LARGEFILE in case not defined

    54 - Fix bug in gzeof() to take into account unused input data

    55 - Avoid initialization of structures with variables in puff.c

    56 - Updated win32/README-WIN32.txt [Rowe]

    57 

    58 Changes in 1.2.4.1 (28 Mar 2010)

    59 - Remove the use of [a-z] constructs for sed in configure [gentoo 310225]

    60 - Remove $(SHAREDLIB) from LIBS in Makefile.in [Creech]

    61 - Restore "for debugging" comment on sprintf() in gzlib.c

    62 - Remove fdopen for MVS from gzguts.h

    63 - Put new README-WIN32.txt in win32 [Rowe]

    64 - Add check for shell to configure and invoke another shell if needed

    65 - Fix big fat stinking bug in gzseek() on uncompressed files

    66 - Remove vestigial F_OPEN64 define in zutil.h

    67 - Set and check the value of _LARGEFILE_SOURCE and _LARGEFILE64_SOURCE

    68 - Avoid errors on non-LFS systems when applications define LFS macros

    69 - Set EXE to ".exe" in configure for MINGW [Kahle]

    70 - Match crc32() in crc32.c exactly to the prototype in zlib.h [Sherrill]

    71 - Add prefix for cross-compilation in win32/makefile.gcc [Bar-Lev]

    72 - Add DLL install in win32/makefile.gcc [Bar-Lev]

    73 - Allow Linux* or linux* from uname in configure [Bar-Lev]

    74 - Allow ldconfig to be redefined in configure and Makefile.in [Bar-Lev]

    75 - Add cross-compilation prefixes to configure [Bar-Lev]

    76 - Match type exactly in gz_load() invocation in gzread.c

    77 - Match type exactly of zcalloc() in zutil.c to zlib.h alloc_func

    78 - Provide prototypes for *64 functions when building zlib without LFS

    79 - Don't use -lc when linking shared library on MinGW

    80 - Remove errno.h check in configure and vestigial errno code in zutil.h

    81 

    82 Changes in 1.2.4 (14 Mar 2010)

    83 - Fix VER3 extraction in configure for no fourth subversion

    84 - Update zlib.3, add docs to Makefile.in to make .pdf out of it

    85 - Add zlib.3.pdf to distribution

    86 - Don't set error code in gzerror() if passed pointer is NULL

    87 - Apply destination directory fixes to CMakeLists.txt [Lowman]

    88 - Move #cmakedefine's to a new zconf.in.cmakein

    89 - Restore zconf.h for builds that don't use configure or cmake

    90 - Add distclean to dummy Makefile for convenience

    91 - Update and improve INDEX, README, and FAQ

    92 - Update CMakeLists.txt for the return of zconf.h [Lowman]

    93 - Update contrib/vstudio/vc9 and vc10 [Vollant]

    94 - Change libz.dll.a back to libzdll.a in win32/Makefile.gcc

    95 - Apply license and readme changes to contrib/asm686 [Raiter]

    96 - Check file name lengths and add -c option in minigzip.c [Li]

    97 - Update contrib/amd64 and contrib/masmx86/ [Vollant]

    98 - Avoid use of "eof" parameter in trees.c to not shadow library variable

    99 - Update make_vms.com for removal of zlibdefs.h [Zinser]

   100 - Update assembler code and vstudio projects in contrib [Vollant]

   101 - Remove outdated assembler code contrib/masm686 and contrib/asm586

   102 - Remove old vc7 and vc8 from contrib/vstudio

   103 - Update win32/Makefile.msc, add ZLIB_VER_SUBREVISION [Rowe]

   104 - Fix memory leaks in gzclose_r() and gzclose_w(), file leak in gz_open()

   105 - Add contrib/gcc_gvmat64 for longest_match and inflate_fast [Vollant]

   106 - Remove *64 functions from win32/zlib.def (they're not 64-bit yet)

   107 - Fix bug in void-returning vsprintf() case in gzwrite.c

   108 - Fix name change from inflate.h in contrib/inflate86/inffas86.c

   109 - Check if temporary file exists before removing in make_vms.com [Zinser]

   110 - Fix make install and uninstall for --static option

   111 - Fix usage of _MSC_VER in gzguts.h and zutil.h [Truta]

   112 - Update readme.txt in contrib/masmx64 and masmx86 to assemble

   113 

   114 Changes in 1.2.3.9 (21 Feb 2010)

   115 - Expunge gzio.c

   116 - Move as400 build information to old

   117 - Fix updates in contrib/minizip and contrib/vstudio

   118 - Add const to vsnprintf test in configure to avoid warnings [Weigelt]

   119 - Delete zconf.h (made by configure) [Weigelt]

   120 - Change zconf.in.h to zconf.h.in per convention [Weigelt]

   121 - Check for NULL buf in gzgets()

   122 - Return empty string for gzgets() with len == 1 (like fgets())

   123 - Fix description of gzgets() in zlib.h for end-of-file, NULL return

   124 - Update minizip to 1.1 [Vollant]

   125 - Avoid MSVC loss of data warnings in gzread.c, gzwrite.c

   126 - Note in zlib.h that gzerror() should be used to distinguish from EOF

   127 - Remove use of snprintf() from gzlib.c

   128 - Fix bug in gzseek()

   129 - Update contrib/vstudio, adding vc9 and vc10 [Kuno, Vollant]

   130 - Fix zconf.h generation in CMakeLists.txt [Lowman]

   131 - Improve comments in zconf.h where modified by configure

   132 

   133 Changes in 1.2.3.8 (13 Feb 2010)

   134 - Clean up text files (tabs, trailing whitespace, etc.) [Oberhumer]

   135 - Use z_off64_t in gz_zero() and gz_skip() to match state->skip

   136 - Avoid comparison problem when sizeof(int) == sizeof(z_off64_t)

   137 - Revert to Makefile.in from 1.2.3.6 (live with the clutter)

   138 - Fix missing error return in gzflush(), add zlib.h note

   139 - Add *64 functions to zlib.map [Levin]

   140 - Fix signed/unsigned comparison in gz_comp()

   141 - Use SFLAGS when testing shared linking in configure

   142 - Add --64 option to ./configure to use -m64 with gcc

   143 - Fix ./configure --help to correctly name options

   144 - Have make fail if a test fails [Levin]

   145 - Avoid buffer overrun in contrib/masmx64/gvmat64.asm [Simpson]

   146 - Remove assembler object files from contrib

   147 

   148 Changes in 1.2.3.7 (24 Jan 2010)

   149 - Always gzopen() with O_LARGEFILE if available

   150 - Fix gzdirect() to work immediately after gzopen() or gzdopen()

   151 - Make gzdirect() more precise when the state changes while reading

   152 - Improve zlib.h documentation in many places

   153 - Catch memory allocation failure in gz_open()

   154 - Complete close operation if seek forward in gzclose_w() fails

   155 - Return Z_ERRNO from gzclose_r() if close() fails

   156 - Return Z_STREAM_ERROR instead of EOF for gzclose() being passed NULL

   157 - Return zero for gzwrite() errors to match zlib.h description

   158 - Return -1 on gzputs() error to match zlib.h description

   159 - Add zconf.in.h to allow recovery from configure modification [Weigelt]

   160 - Fix static library permissions in Makefile.in [Weigelt]

   161 - Avoid warnings in configure tests that hide functionality [Weigelt]

   162 - Add *BSD and DragonFly to Linux case in configure [gentoo 123571]

   163 - Change libzdll.a to libz.dll.a in win32/Makefile.gcc [gentoo 288212]

   164 - Avoid access of uninitialized data for first inflateReset2 call [Gomes]

   165 - Keep object files in subdirectories to reduce the clutter somewhat

   166 - Remove default Makefile and zlibdefs.h, add dummy Makefile

   167 - Add new external functions to Z_PREFIX, remove duplicates, z_z_ -> z_

   168 - Remove zlibdefs.h completely -- modify zconf.h instead

   169 

   170 Changes in 1.2.3.6 (17 Jan 2010)

   171 - Avoid void * arithmetic in gzread.c and gzwrite.c

   172 - Make compilers happier with const char * for gz_error message

   173 - Avoid unused parameter warning in inflate.c

   174 - Avoid signed-unsigned comparison warning in inflate.c

   175 - Indent #pragma's for traditional C

   176 - Fix usage of strwinerror() in glib.c, change to gz_strwinerror()

   177 - Correct email address in configure for system options

   178 - Update make_vms.com and add make_vms.com to contrib/minizip [Zinser]

   179 - Update zlib.map [Brown]

   180 - Fix Makefile.in for Solaris 10 make of example64 and minizip64 [Torok]

   181 - Apply various fixes to CMakeLists.txt [Lowman]

   182 - Add checks on len in gzread() and gzwrite()

   183 - Add error message for no more room for gzungetc()

   184 - Remove zlib version check in gzwrite()

   185 - Defer compression of gzprintf() result until need to

   186 - Use snprintf() in gzdopen() if available

   187 - Remove USE_MMAP configuration determination (only used by minigzip)

   188 - Remove examples/pigz.c (available separately)

   189 - Update examples/gun.c to 1.6

   190 

   191 Changes in 1.2.3.5 (8 Jan 2010)

   192 - Add space after #if in zutil.h for some compilers

   193 - Fix relatively harmless bug in deflate_fast() [Exarevsky]

   194 - Fix same problem in deflate_slow()

   195 - Add $(SHAREDLIBV) to LIBS in Makefile.in [Brown]

   196 - Add deflate_rle() for faster Z_RLE strategy run-length encoding

   197 - Add deflate_huff() for faster Z_HUFFMAN_ONLY encoding

   198 - Change name of "write" variable in inffast.c to avoid library collisions

   199 - Fix premature EOF from gzread() in gzio.c [Brown]

   200 - Use zlib header window size if windowBits is 0 in inflateInit2()

   201 - Remove compressBound() call in deflate.c to avoid linking compress.o

   202 - Replace use of errno in gz* with functions, support WinCE [Alves]

   203 - Provide alternative to perror() in minigzip.c for WinCE [Alves]

   204 - Don't use _vsnprintf on later versions of MSVC [Lowman]

   205 - Add CMake build script and input file [Lowman]

   206 - Update contrib/minizip to 1.1 [Svensson, Vollant]

   207 - Moved nintendods directory from contrib to .

   208 - Replace gzio.c with a new set of routines with the same functionality

   209 - Add gzbuffer(), gzoffset(), gzclose_r(), gzclose_w() as part of above

   210 - Update contrib/minizip to 1.1b

   211 - Change gzeof() to return 0 on error instead of -1 to agree with zlib.h

   212 

   213 Changes in 1.2.3.4 (21 Dec 2009)

   214 - Use old school .SUFFIXES in Makefile.in for FreeBSD compatibility

   215 - Update comments in configure and Makefile.in for default --shared

   216 - Fix test -z's in configure [Marquess]

   217 - Build examplesh and minigzipsh when not testing

   218 - Change NULL's to Z_NULL's in deflate.c and in comments in zlib.h

   219 - Import LDFLAGS from the environment in configure

   220 - Fix configure to populate SFLAGS with discovered CFLAGS options

   221 - Adapt make_vms.com to the new Makefile.in [Zinser]

   222 - Add zlib2ansi script for C++ compilation [Marquess]

   223 - Add _FILE_OFFSET_BITS=64 test to make test (when applicable)

   224 - Add AMD64 assembler code for longest match to contrib [Teterin]

   225 - Include options from $SFLAGS when doing $LDSHARED

   226 - Simplify 64-bit file support by introducing z_off64_t type

   227 - Make shared object files in objs directory to work around old Sun cc

   228 - Use only three-part version number for Darwin shared compiles

   229 - Add rc option to ar in Makefile.in for when ./configure not run

   230 - Add -WI,-rpath,. to LDFLAGS for OSF 1 V4*

   231 - Set LD_LIBRARYN32_PATH for SGI IRIX shared compile

   232 - Protect against _FILE_OFFSET_BITS being defined when compiling zlib

   233 - Rename Makefile.in targets allstatic to static and allshared to shared

   234 - Fix static and shared Makefile.in targets to be independent

   235 - Correct error return bug in gz_open() by setting state [Brown]

   236 - Put spaces before ;;'s in configure for better sh compatibility

   237 - Add pigz.c (parallel implementation of gzip) to examples/

   238 - Correct constant in crc32.c to UL [Leventhal]

   239 - Reject negative lengths in crc32_combine()

   240 - Add inflateReset2() function to work like inflateEnd()/inflateInit2()

   241 - Include sys/types.h for _LARGEFILE64_SOURCE [Brown]

   242 - Correct typo in doc/algorithm.txt [Janik]

   243 - Fix bug in adler32_combine() [Zhu]

   244 - Catch missing-end-of-block-code error in all inflates and in puff

   245     Assures that random input to inflate eventually results in an error

   246 - Added enough.c (calculation of ENOUGH for inftrees.h) to examples/

   247 - Update ENOUGH and its usage to reflect discovered bounds

   248 - Fix gzerror() error report on empty input file [Brown]

   249 - Add ush casts in trees.c to avoid pedantic runtime errors

   250 - Fix typo in zlib.h uncompress() description [Reiss]

   251 - Correct inflate() comments with regard to automatic header detection

   252 - Remove deprecation comment on Z_PARTIAL_FLUSH (it stays)

   253 - Put new version of gzlog (2.0) in examples with interruption recovery

   254 - Add puff compile option to permit invalid distance-too-far streams

   255 - Add puff TEST command options, ability to read piped input

   256 - Prototype the *64 functions in zlib.h when _FILE_OFFSET_BITS == 64, but

   257   _LARGEFILE64_SOURCE not defined

   258 - Fix Z_FULL_FLUSH to truly erase the past by resetting s->strstart

   259 - Fix deflateSetDictionary() to use all 32K for output consistency

   260 - Remove extraneous #define MIN_LOOKAHEAD in deflate.c (in deflate.h)

   261 - Clear bytes after deflate lookahead to avoid use of uninitialized data

   262 - Change a limit in inftrees.c to be more transparent to Coverity Prevent

   263 - Update win32/zlib.def with exported symbols from zlib.h

   264 - Correct spelling error in zlib.h [Willem]

   265 - Allow Z_BLOCK for deflate() to force a new block

   266 - Allow negative bits in inflatePrime() to delete existing bit buffer

   267 - Add Z_TREES flush option to inflate() to return at end of trees

   268 - Add inflateMark() to return current state information for random access

   269 - Add Makefile for NintendoDS to contrib [Costa]

   270 - Add -w in configure compile tests to avoid spurious warnings [Beucler]

   271 - Fix typos in zlib.h comments for deflateSetDictionary()

   272 - Fix EOF detection in transparent gzread() [Maier]

   273 

   274 Changes in 1.2.3.3 (2 October 2006)

   275 - Make --shared the default for configure, add a --static option

   276 - Add compile option to permit invalid distance-too-far streams

   277 - Add inflateUndermine() function which is required to enable above

   278 - Remove use of "this" variable name for C++ compatibility [Marquess]

   279 - Add testing of shared library in make test, if shared library built

   280 - Use ftello() and fseeko() if available instead of ftell() and fseek()

   281 - Provide two versions of all functions that use the z_off_t type for

   282   binary compatibility -- a normal version and a 64-bit offset version,

   283   per the Large File Support Extension when _LARGEFILE64_SOURCE is

   284   defined; use the 64-bit versions by default when _FILE_OFFSET_BITS

   285   is defined to be 64

   286 - Add a --uname= option to configure to perhaps help with cross-compiling

   287 

   288 Changes in 1.2.3.2 (3 September 2006)

   289 - Turn off silly Borland warnings [Hay]

   290 - Use off64_t and define _LARGEFILE64_SOURCE when present

   291 - Fix missing dependency on inffixed.h in Makefile.in

   292 - Rig configure --shared to build both shared and static [Teredesai, Truta]

   293 - Remove zconf.in.h and instead create a new zlibdefs.h file

   294 - Fix contrib/minizip/unzip.c non-encrypted after encrypted [Vollant]

   295 - Add treebuild.xml (see http://treebuild.metux.de/) [Weigelt]

   296 

   297 Changes in 1.2.3.1 (16 August 2006)

   298 - Add watcom directory with OpenWatcom make files [Daniel]

   299 - Remove #undef of FAR in zconf.in.h for MVS [Fedtke]

   300 - Update make_vms.com [Zinser]

   301 - Use -fPIC for shared build in configure [Teredesai, Nicholson]

   302 - Use only major version number for libz.so on IRIX and OSF1 [Reinholdtsen]

   303 - Use fdopen() (not _fdopen()) for Interix in zutil.h [BŠck]

   304 - Add some FAQ entries about the contrib directory

   305 - Update the MVS question in the FAQ

   306 - Avoid extraneous reads after EOF in gzio.c [Brown]

   307 - Correct spelling of "successfully" in gzio.c [Randers-Pehrson]

   308 - Add comments to zlib.h about gzerror() usage [Brown]

   309 - Set extra flags in gzip header in gzopen() like deflate() does

   310 - Make configure options more compatible with double-dash conventions

   311   [Weigelt]

   312 - Clean up compilation under Solaris SunStudio cc [Rowe, Reinholdtsen]

   313 - Fix uninstall target in Makefile.in [Truta]

   314 - Add pkgconfig support [Weigelt]

   315 - Use $(DESTDIR) macro in Makefile.in [Reinholdtsen, Weigelt]

   316 - Replace set_data_type() with a more accurate detect_data_type() in

   317   trees.c, according to the txtvsbin.txt document [Truta]

   318 - Swap the order of #include <stdio.h> and #include "zlib.h" in

   319   gzio.c, example.c and minigzip.c [Truta]

   320 - Shut up annoying VS2005 warnings about standard C deprecation [Rowe,

   321   Truta] (where?)

   322 - Fix target "clean" from win32/Makefile.bor [Truta]

   323 - Create .pdb and .manifest files in win32/makefile.msc [Ziegler, Rowe]

   324 - Update zlib www home address in win32/DLL_FAQ.txt [Truta]

   325 - Update contrib/masmx86/inffas32.asm for VS2005 [Vollant, Van Wassenhove]

   326 - Enable browse info in the "Debug" and "ASM Debug" configurations in

   327   the Visual C++ 6 project, and set (non-ASM) "Debug" as default [Truta]

   328 - Add pkgconfig support [Weigelt]

   329 - Add ZLIB_VER_MAJOR, ZLIB_VER_MINOR and ZLIB_VER_REVISION in zlib.h,

   330   for use in win32/zlib1.rc [Polushin, Rowe, Truta]

   331 - Add a document that explains the new text detection scheme to

   332   doc/txtvsbin.txt [Truta]

   333 - Add rfc1950.txt, rfc1951.txt and rfc1952.txt to doc/ [Truta]

   334 - Move algorithm.txt into doc/ [Truta]

   335 - Synchronize FAQ with website

   336 - Fix compressBound(), was low for some pathological cases [Fearnley]

   337 - Take into account wrapper variations in deflateBound()

   338 - Set examples/zpipe.c input and output to binary mode for Windows

   339 - Update examples/zlib_how.html with new zpipe.c (also web site)

   340 - Fix some warnings in examples/gzlog.c and examples/zran.c (it seems

   341   that gcc became pickier in 4.0)

   342 - Add zlib.map for Linux: "All symbols from zlib-1.1.4 remain

   343   un-versioned, the patch adds versioning only for symbols introduced in

   344   zlib-1.2.0 or later.  It also declares as local those symbols which are

   345   not designed to be exported." [Levin]

   346 - Update Z_PREFIX list in zconf.in.h, add --zprefix option to configure

   347 - Do not initialize global static by default in trees.c, add a response

   348   NO_INIT_GLOBAL_POINTERS to initialize them if needed [Marquess]

   349 - Don't use strerror() in gzio.c under WinCE [Yakimov]

   350 - Don't use errno.h in zutil.h under WinCE [Yakimov]

   351 - Move arguments for AR to its usage to allow replacing ar [Marot]

   352 - Add HAVE_VISIBILITY_PRAGMA in zconf.in.h for Mozilla [Randers-Pehrson]

   353 - Improve inflateInit() and inflateInit2() documentation

   354 - Fix structure size comment in inflate.h

   355 - Change configure help option from --h* to --help [Santos]

   356 

   357 Changes in 1.2.3 (18 July 2005)

   358 - Apply security vulnerability fixes to contrib/infback9 as well

   359 - Clean up some text files (carriage returns, trailing space)

   360 - Update testzlib, vstudio, masmx64, and masmx86 in contrib [Vollant]

   361 

   362 Changes in 1.2.2.4 (11 July 2005)

   363 - Add inflatePrime() function for starting inflation at bit boundary

   364 - Avoid some Visual C warnings in deflate.c

   365 - Avoid more silly Visual C warnings in inflate.c and inftrees.c for 64-bit

   366   compile

   367 - Fix some spelling errors in comments [Betts]

   368 - Correct inflateInit2() error return documentation in zlib.h

   369 - Add zran.c example of compressed data random access to examples

   370   directory, shows use of inflatePrime()

   371 - Fix cast for assignments to strm->state in inflate.c and infback.c

   372 - Fix zlibCompileFlags() in zutil.c to use 1L for long shifts [Oberhumer]

   373 - Move declarations of gf2 functions to right place in crc32.c [Oberhumer]

   374 - Add cast in trees.c t avoid a warning [Oberhumer]

   375 - Avoid some warnings in fitblk.c, gun.c, gzjoin.c in examples [Oberhumer]

   376 - Update make_vms.com [Zinser]

   377 - Initialize state->write in inflateReset() since copied in inflate_fast()

   378 - Be more strict on incomplete code sets in inflate_table() and increase

   379   ENOUGH and MAXD -- this repairs a possible security vulnerability for

   380   invalid inflate input.  Thanks to Tavis Ormandy and Markus Oberhumer for

   381   discovering the vulnerability and providing test cases.

   382 - Add ia64 support to configure for HP-UX [Smith]

   383 - Add error return to gzread() for format or i/o error [Levin]

   384 - Use malloc.h for OS/2 [Necasek]

   385 

   386 Changes in 1.2.2.3 (27 May 2005)

   387 - Replace 1U constants in inflate.c and inftrees.c for 64-bit compile

   388 - Typecast fread() return values in gzio.c [Vollant]

   389 - Remove trailing space in minigzip.c outmode (VC++ can't deal with it)

   390 - Fix crc check bug in gzread() after gzungetc() [Heiner]

   391 - Add the deflateTune() function to adjust internal compression parameters

   392 - Add a fast gzip decompressor, gun.c, to examples (use of inflateBack)

   393 - Remove an incorrect assertion in examples/zpipe.c

   394 - Add C++ wrapper in infback9.h [Donais]

   395 - Fix bug in inflateCopy() when decoding fixed codes

   396 - Note in zlib.h how much deflateSetDictionary() actually uses

   397 - Remove USE_DICT_HEAD in deflate.c (would mess up inflate if used)

   398 - Add _WIN32_WCE to define WIN32 in zconf.in.h [Spencer]

   399 - Don't include stderr.h or errno.h for _WIN32_WCE in zutil.h [Spencer]

   400 - Add gzdirect() function to indicate transparent reads

   401 - Update contrib/minizip [Vollant]

   402 - Fix compilation of deflate.c when both ASMV and FASTEST [Oberhumer]

   403 - Add casts in crc32.c to avoid warnings [Oberhumer]

   404 - Add contrib/masmx64 [Vollant]

   405 - Update contrib/asm586, asm686, masmx86, testzlib, vstudio [Vollant]

   406 

   407 Changes in 1.2.2.2 (30 December 2004)

   408 - Replace structure assignments in deflate.c and inflate.c with zmemcpy to

   409   avoid implicit memcpy calls (portability for no-library compilation)

   410 - Increase sprintf() buffer size in gzdopen() to allow for large numbers

   411 - Add INFLATE_STRICT to check distances against zlib header

   412 - Improve WinCE errno handling and comments [Chang]

   413 - Remove comment about no gzip header processing in FAQ

   414 - Add Z_FIXED strategy option to deflateInit2() to force fixed trees

   415 - Add updated make_vms.com [Coghlan], update README

   416 - Create a new "examples" directory, move gzappend.c there, add zpipe.c,

   417   fitblk.c, gzlog.[ch], gzjoin.c, and zlib_how.html.

   418 - Add FAQ entry and comments in deflate.c on uninitialized memory access

   419 - Add Solaris 9 make options in configure [Gilbert]

   420 - Allow strerror() usage in gzio.c for STDC

   421 - Fix DecompressBuf in contrib/delphi/ZLib.pas [ManChesTer]

   422 - Update contrib/masmx86/inffas32.asm and gvmat32.asm [Vollant]

   423 - Use z_off_t for adler32_combine() and crc32_combine() lengths

   424 - Make adler32() much faster for small len

   425 - Use OS_CODE in deflate() default gzip header

   426 

   427 Changes in 1.2.2.1 (31 October 2004)

   428 - Allow inflateSetDictionary() call for raw inflate

   429 - Fix inflate header crc check bug for file names and comments

   430 - Add deflateSetHeader() and gz_header structure for custom gzip headers

   431 - Add inflateGetheader() to retrieve gzip headers

   432 - Add crc32_combine() and adler32_combine() functions

   433 - Add alloc_func, free_func, in_func, out_func to Z_PREFIX list

   434 - Use zstreamp consistently in zlib.h (inflate_back functions)

   435 - Remove GUNZIP condition from definition of inflate_mode in inflate.h

   436   and in contrib/inflate86/inffast.S [Truta, Anderson]

   437 - Add support for AMD64 in contrib/inflate86/inffas86.c [Anderson]

   438 - Update projects/README.projects and projects/visualc6 [Truta]

   439 - Update win32/DLL_FAQ.txt [Truta]

   440 - Avoid warning under NO_GZCOMPRESS in gzio.c; fix typo [Truta]

   441 - Deprecate Z_ASCII; use Z_TEXT instead [Truta]

   442 - Use a new algorithm for setting strm->data_type in trees.c [Truta]

   443 - Do not define an exit() prototype in zutil.c unless DEBUG defined

   444 - Remove prototype of exit() from zutil.c, example.c, minigzip.c [Truta]

   445 - Add comment in zlib.h for Z_NO_FLUSH parameter to deflate()

   446 - Fix Darwin build version identification [Peterson]

   447 

   448 Changes in 1.2.2 (3 October 2004)

   449 - Update zlib.h comments on gzip in-memory processing

   450 - Set adler to 1 in inflateReset() to support Java test suite [Walles]

   451 - Add contrib/dotzlib [Ravn]

   452 - Update win32/DLL_FAQ.txt [Truta]

   453 - Update contrib/minizip [Vollant]

   454 - Move contrib/visual-basic.txt to old/ [Truta]

   455 - Fix assembler builds in projects/visualc6/ [Truta]

   456 

   457 Changes in 1.2.1.2 (9 September 2004)

   458 - Update INDEX file

   459 - Fix trees.c to update strm->data_type (no one ever noticed!)

   460 - Fix bug in error case in inflate.c, infback.c, and infback9.c [Brown]

   461 - Add "volatile" to crc table flag declaration (for DYNAMIC_CRC_TABLE)

   462 - Add limited multitasking protection to DYNAMIC_CRC_TABLE

   463 - Add NO_vsnprintf for VMS in zutil.h [Mozilla]

   464 - Don't declare strerror() under VMS [Mozilla]

   465 - Add comment to DYNAMIC_CRC_TABLE to use get_crc_table() to initialize

   466 - Update contrib/ada [Anisimkov]

   467 - Update contrib/minizip [Vollant]

   468 - Fix configure to not hardcode directories for Darwin [Peterson]

   469 - Fix gzio.c to not return error on empty files [Brown]

   470 - Fix indentation; update version in contrib/delphi/ZLib.pas and

   471   contrib/pascal/zlibpas.pas [Truta]

   472 - Update mkasm.bat in contrib/masmx86 [Truta]

   473 - Update contrib/untgz [Truta]

   474 - Add projects/README.projects [Truta]

   475 - Add project for MS Visual C++ 6.0 in projects/visualc6 [Cadieux, Truta]

   476 - Update win32/DLL_FAQ.txt [Truta]

   477 - Update list of Z_PREFIX symbols in zconf.h [Randers-Pehrson, Truta]

   478 - Remove an unnecessary assignment to curr in inftrees.c [Truta]

   479 - Add OS/2 to exe builds in configure [Poltorak]

   480 - Remove err dummy parameter in zlib.h [Kientzle]

   481 

   482 Changes in 1.2.1.1 (9 January 2004)

   483 - Update email address in README

   484 - Several FAQ updates

   485 - Fix a big fat bug in inftrees.c that prevented decoding valid

   486   dynamic blocks with only literals and no distance codes --

   487   Thanks to "Hot Emu" for the bug report and sample file

   488 - Add a note to puff.c on no distance codes case.

   489 

   490 Changes in 1.2.1 (17 November 2003)

   491 - Remove a tab in contrib/gzappend/gzappend.c

   492 - Update some interfaces in contrib for new zlib functions

   493 - Update zlib version number in some contrib entries

   494 - Add Windows CE definition for ptrdiff_t in zutil.h [Mai, Truta]

   495 - Support shared libraries on Hurd and KFreeBSD [Brown]

   496 - Fix error in NO_DIVIDE option of adler32.c

   497 

   498 Changes in 1.2.0.8 (4 November 2003)

   499 - Update version in contrib/delphi/ZLib.pas and contrib/pascal/zlibpas.pas

   500 - Add experimental NO_DIVIDE #define in adler32.c

   501     - Possibly faster on some processors (let me know if it is)

   502 - Correct Z_BLOCK to not return on first inflate call if no wrap

   503 - Fix strm->data_type on inflate() return to correctly indicate EOB

   504 - Add deflatePrime() function for appending in the middle of a byte

   505 - Add contrib/gzappend for an example of appending to a stream

   506 - Update win32/DLL_FAQ.txt [Truta]

   507 - Delete Turbo C comment in README [Truta]

   508 - Improve some indentation in zconf.h [Truta]

   509 - Fix infinite loop on bad input in configure script [Church]

   510 - Fix gzeof() for concatenated gzip files [Johnson]

   511 - Add example to contrib/visual-basic.txt [Michael B.]

   512 - Add -p to mkdir's in Makefile.in [vda]

   513 - Fix configure to properly detect presence or lack of printf functions

   514 - Add AS400 support [Monnerat]

   515 - Add a little Cygwin support [Wilson]

   516 

   517 Changes in 1.2.0.7 (21 September 2003)

   518 - Correct some debug formats in contrib/infback9

   519 - Cast a type in a debug statement in trees.c

   520 - Change search and replace delimiter in configure from % to # [Beebe]

   521 - Update contrib/untgz to 0.2 with various fixes [Truta]

   522 - Add build support for Amiga [Nikl]

   523 - Remove some directories in old that have been updated to 1.2

   524 - Add dylib building for Mac OS X in configure and Makefile.in

   525 - Remove old distribution stuff from Makefile

   526 - Update README to point to DLL_FAQ.txt, and add comment on Mac OS X

   527 - Update links in README

   528 

   529 Changes in 1.2.0.6 (13 September 2003)

   530 - Minor FAQ updates

   531 - Update contrib/minizip to 1.00 [Vollant]

   532 - Remove test of gz functions in example.c when GZ_COMPRESS defined [Truta]

   533 - Update POSTINC comment for 68060 [Nikl]

   534 - Add contrib/infback9 with deflate64 decoding (unsupported)

   535 - For MVS define NO_vsnprintf and undefine FAR [van Burik]

   536 - Add pragma for fdopen on MVS [van Burik]

   537 

   538 Changes in 1.2.0.5 (8 September 2003)

   539 - Add OF to inflateBackEnd() declaration in zlib.h

   540 - Remember start when using gzdopen in the middle of a file

   541 - Use internal off_t counters in gz* functions to properly handle seeks

   542 - Perform more rigorous check for distance-too-far in inffast.c

   543 - Add Z_BLOCK flush option to return from inflate at block boundary

   544 - Set strm->data_type on return from inflate

   545     - Indicate bits unused, if at block boundary, and if in last block

   546 - Replace size_t with ptrdiff_t in crc32.c, and check for correct size

   547 - Add condition so old NO_DEFLATE define still works for compatibility

   548 - FAQ update regarding the Windows DLL [Truta]

   549 - INDEX update: add qnx entry, remove aix entry [Truta]

   550 - Install zlib.3 into mandir [Wilson]

   551 - Move contrib/zlib_dll_FAQ.txt to win32/DLL_FAQ.txt; update [Truta]

   552 - Adapt the zlib interface to the new DLL convention guidelines [Truta]

   553 - Introduce ZLIB_WINAPI macro to allow the export of functions using

   554   the WINAPI calling convention, for Visual Basic [Vollant, Truta]

   555 - Update msdos and win32 scripts and makefiles [Truta]

   556 - Export symbols by name, not by ordinal, in win32/zlib.def [Truta]

   557 - Add contrib/ada [Anisimkov]

   558 - Move asm files from contrib/vstudio/vc70_32 to contrib/asm386 [Truta]

   559 - Rename contrib/asm386 to contrib/masmx86 [Truta, Vollant]

   560 - Add contrib/masm686 [Truta]

   561 - Fix offsets in contrib/inflate86 and contrib/masmx86/inffas32.asm

   562   [Truta, Vollant]

   563 - Update contrib/delphi; rename to contrib/pascal; add example [Truta]

   564 - Remove contrib/delphi2; add a new contrib/delphi [Truta]

   565 - Avoid inclusion of the nonstandard <memory.h> in contrib/iostream,

   566   and fix some method prototypes [Truta]

   567 - Fix the ZCR_SEED2 constant to avoid warnings in contrib/minizip

   568   [Truta]

   569 - Avoid the use of backslash (\) in contrib/minizip [Vollant]

   570 - Fix file time handling in contrib/untgz; update makefiles [Truta]

   571 - Update contrib/vstudio/vc70_32 to comply with the new DLL guidelines

   572   [Vollant]

   573 - Remove contrib/vstudio/vc15_16 [Vollant]

   574 - Rename contrib/vstudio/vc70_32 to contrib/vstudio/vc7 [Truta]

   575 - Update README.contrib [Truta]

   576 - Invert the assignment order of match_head and s->prev[...] in

   577   INSERT_STRING [Truta]

   578 - Compare TOO_FAR with 32767 instead of 32768, to avoid 16-bit warnings

   579   [Truta]

   580 - Compare function pointers with 0, not with NULL or Z_NULL [Truta]

   581 - Fix prototype of syncsearch in inflate.c [Truta]

   582 - Introduce ASMINF macro to be enabled when using an ASM implementation

   583   of inflate_fast [Truta]

   584 - Change NO_DEFLATE to NO_GZCOMPRESS [Truta]

   585 - Modify test_gzio in example.c to take a single file name as a

   586   parameter [Truta]

   587 - Exit the example.c program if gzopen fails [Truta]

   588 - Add type casts around strlen in example.c [Truta]

   589 - Remove casting to sizeof in minigzip.c; give a proper type

   590   to the variable compared with SUFFIX_LEN [Truta]

   591 - Update definitions of STDC and STDC99 in zconf.h [Truta]

   592 - Synchronize zconf.h with the new Windows DLL interface [Truta]

   593 - Use SYS16BIT instead of __32BIT__ to distinguish between

   594   16- and 32-bit platforms [Truta]

   595 - Use far memory allocators in small 16-bit memory models for

   596   Turbo C [Truta]

   597 - Add info about the use of ASMV, ASMINF and ZLIB_WINAPI in

   598   zlibCompileFlags [Truta]

   599 - Cygwin has vsnprintf [Wilson]

   600 - In Windows16, OS_CODE is 0, as in MSDOS [Truta]

   601 - In Cygwin, OS_CODE is 3 (Unix), not 11 (Windows32) [Wilson]

   602 

   603 Changes in 1.2.0.4 (10 August 2003)

   604 - Minor FAQ updates

   605 - Be more strict when checking inflateInit2's windowBits parameter

   606 - Change NO_GUNZIP compile option to NO_GZIP to cover deflate as well

   607 - Add gzip wrapper option to deflateInit2 using windowBits

   608 - Add updated QNX rule in configure and qnx directory [Bonnefoy]

   609 - Make inflate distance-too-far checks more rigorous

   610 - Clean up FAR usage in inflate

   611 - Add casting to sizeof() in gzio.c and minigzip.c

   612 

   613 Changes in 1.2.0.3 (19 July 2003)

   614 - Fix silly error in gzungetc() implementation [Vollant]

   615 - Update contrib/minizip and contrib/vstudio [Vollant]

   616 - Fix printf format in example.c

   617 - Correct cdecl support in zconf.in.h [Anisimkov]

   618 - Minor FAQ updates

   619 

   620 Changes in 1.2.0.2 (13 July 2003)

   621 - Add ZLIB_VERNUM in zlib.h for numerical preprocessor comparisons

   622 - Attempt to avoid warnings in crc32.c for pointer-int conversion

   623 - Add AIX to configure, remove aix directory [Bakker]

   624 - Add some casts to minigzip.c

   625 - Improve checking after insecure sprintf() or vsprintf() calls

   626 - Remove #elif's from crc32.c

   627 - Change leave label to inf_leave in inflate.c and infback.c to avoid

   628   library conflicts

   629 - Remove inflate gzip decoding by default--only enable gzip decoding by

   630   special request for stricter backward compatibility

   631 - Add zlibCompileFlags() function to return compilation information

   632 - More typecasting in deflate.c to avoid warnings

   633 - Remove leading underscore from _Capital #defines [Truta]

   634 - Fix configure to link shared library when testing

   635 - Add some Windows CE target adjustments [Mai]

   636 - Remove #define ZLIB_DLL in zconf.h [Vollant]

   637 - Add zlib.3 [Rodgers]

   638 - Update RFC URL in deflate.c and algorithm.txt [Mai]

   639 - Add zlib_dll_FAQ.txt to contrib [Truta]

   640 - Add UL to some constants [Truta]

   641 - Update minizip and vstudio [Vollant]

   642 - Remove vestigial NEED_DUMMY_RETURN from zconf.in.h

   643 - Expand use of NO_DUMMY_DECL to avoid all dummy structures

   644 - Added iostream3 to contrib [Schwardt]

   645 - Replace rewind() with fseek() for WinCE [Truta]

   646 - Improve setting of zlib format compression level flags

   647     - Report 0 for huffman and rle strategies and for level == 0 or 1

   648     - Report 2 only for level == 6

   649 - Only deal with 64K limit when necessary at compile time [Truta]

   650 - Allow TOO_FAR check to be turned off at compile time [Truta]

   651 - Add gzclearerr() function [Souza]

   652 - Add gzungetc() function

   653 

   654 Changes in 1.2.0.1 (17 March 2003)

   655 - Add Z_RLE strategy for run-length encoding [Truta]

   656     - When Z_RLE requested, restrict matches to distance one

   657     - Update zlib.h, minigzip.c, gzopen(), gzdopen() for Z_RLE

   658 - Correct FASTEST compilation to allow level == 0

   659 - Clean up what gets compiled for FASTEST

   660 - Incorporate changes to zconf.in.h [Vollant]

   661     - Refine detection of Turbo C need for dummy returns

   662     - Refine ZLIB_DLL compilation

   663     - Include additional header file on VMS for off_t typedef

   664 - Try to use _vsnprintf where it supplants vsprintf [Vollant]

   665 - Add some casts in inffast.c

   666 - Enchance comments in zlib.h on what happens if gzprintf() tries to

   667   write more than 4095 bytes before compression

   668 - Remove unused state from inflateBackEnd()

   669 - Remove exit(0) from minigzip.c, example.c

   670 - Get rid of all those darn tabs

   671 - Add "check" target to Makefile.in that does the same thing as "test"

   672 - Add "mostlyclean" and "maintainer-clean" targets to Makefile.in

   673 - Update contrib/inflate86 [Anderson]

   674 - Update contrib/testzlib, contrib/vstudio, contrib/minizip [Vollant]

   675 - Add msdos and win32 directories with makefiles [Truta]

   676 - More additions and improvements to the FAQ

   677 

   678 Changes in 1.2.0 (9 March 2003)

   679 - New and improved inflate code

   680     - About 20% faster

   681     - Does not allocate 32K window unless and until needed

   682     - Automatically detects and decompresses gzip streams

   683     - Raw inflate no longer needs an extra dummy byte at end

   684     - Added inflateBack functions using a callback interface--even faster

   685       than inflate, useful for file utilities (gzip, zip)

   686     - Added inflateCopy() function to record state for random access on

   687       externally generated deflate streams (e.g. in gzip files)

   688     - More readable code (I hope)

   689 - New and improved crc32()

   690     - About 50% faster, thanks to suggestions from Rodney Brown

   691 - Add deflateBound() and compressBound() functions

   692 - Fix memory leak in deflateInit2()

   693 - Permit setting dictionary for raw deflate (for parallel deflate)

   694 - Fix const declaration for gzwrite()

   695 - Check for some malloc() failures in gzio.c

   696 - Fix bug in gzopen() on single-byte file 0x1f

   697 - Fix bug in gzread() on concatenated file with 0x1f at end of buffer

   698   and next buffer doesn't start with 0x8b

   699 - Fix uncompress() to return Z_DATA_ERROR on truncated input

   700 - Free memory at end of example.c

   701 - Remove MAX #define in trees.c (conflicted with some libraries)

   702 - Fix static const's in deflate.c, gzio.c, and zutil.[ch]

   703 - Declare malloc() and free() in gzio.c if STDC not defined

   704 - Use malloc() instead of calloc() in zutil.c if int big enough

   705 - Define STDC for AIX

   706 - Add aix/ with approach for compiling shared library on AIX

   707 - Add HP-UX support for shared libraries in configure

   708 - Add OpenUNIX support for shared libraries in configure

   709 - Use $cc instead of gcc to build shared library

   710 - Make prefix directory if needed when installing

   711 - Correct Macintosh avoidance of typedef Byte in zconf.h

   712 - Correct Turbo C memory allocation when under Linux

   713 - Use libz.a instead of -lz in Makefile (assure use of compiled library)

   714 - Update configure to check for snprintf or vsnprintf functions and their

   715   return value, warn during make if using an insecure function

   716 - Fix configure problem with compile-time knowledge of HAVE_UNISTD_H that

   717   is lost when library is used--resolution is to build new zconf.h

   718 - Documentation improvements (in zlib.h):

   719     - Document raw deflate and inflate

   720     - Update RFCs URL

   721     - Point out that zlib and gzip formats are different

   722     - Note that Z_BUF_ERROR is not fatal

   723     - Document string limit for gzprintf() and possible buffer overflow

   724     - Note requirement on avail_out when flushing

   725     - Note permitted values of flush parameter of inflate()

   726 - Add some FAQs (and even answers) to the FAQ

   727 - Add contrib/inflate86/ for x86 faster inflate

   728 - Add contrib/blast/ for PKWare Data Compression Library decompression

   729 - Add contrib/puff/ simple inflate for deflate format description

   730 

   731 Changes in 1.1.4 (11 March 2002)

   732 - ZFREE was repeated on same allocation on some error conditions.

   733   This creates a security problem described in

   734   http://www.zlib.org/advisory-2002-03-11.txt

   735 - Returned incorrect error (Z_MEM_ERROR) on some invalid data

   736 - Avoid accesses before window for invalid distances with inflate window

   737   less than 32K.

   738 - force windowBits > 8 to avoid a bug in the encoder for a window size

   739   of 256 bytes. (A complete fix will be available in 1.1.5).

   740 

   741 Changes in 1.1.3 (9 July 1998)

   742 - fix "an inflate input buffer bug that shows up on rare but persistent

   743   occasions" (Mark)

   744 - fix gzread and gztell for concatenated .gz files (Didier Le Botlan)

   745 - fix gzseek(..., SEEK_SET) in write mode

   746 - fix crc check after a gzeek (Frank Faubert)

   747 - fix miniunzip when the last entry in a zip file is itself a zip file

   748   (J Lillge)

   749 - add contrib/asm586 and contrib/asm686 (Brian Raiter)

   750   See http://www.muppetlabs.com/~breadbox/software/assembly.html

   751 - add support for Delphi 3 in contrib/delphi (Bob Dellaca)

   752 - add support for C++Builder 3 and Delphi 3 in contrib/delphi2 (Davide Moretti)

   753 - do not exit prematurely in untgz if 0 at start of block (Magnus Holmgren)

   754 - use macro EXTERN instead of extern to support DLL for BeOS (Sander Stoks)

   755 - added a FAQ file

   756 

   757 - Support gzdopen on Mac with Metrowerks (Jason Linhart)

   758 - Do not redefine Byte on Mac (Brad Pettit & Jason Linhart)

   759 - define SEEK_END too if SEEK_SET is not defined (Albert Chin-A-Young)

   760 - avoid some warnings with Borland C (Tom Tanner)

   761 - fix a problem in contrib/minizip/zip.c for 16-bit MSDOS (Gilles Vollant)

   762 - emulate utime() for WIN32 in contrib/untgz  (Gilles Vollant)

   763 - allow several arguments to configure (Tim Mooney, Frodo Looijaard)

   764 - use libdir and includedir in Makefile.in (Tim Mooney)

   765 - support shared libraries on OSF1 V4 (Tim Mooney)

   766 - remove so_locations in "make clean"  (Tim Mooney)

   767 - fix maketree.c compilation error (Glenn, Mark)

   768 - Python interface to zlib now in Python 1.5 (Jeremy Hylton)

   769 - new Makefile.riscos (Rich Walker)

   770 - initialize static descriptors in trees.c for embedded targets (Nick Smith)

   771 - use "foo-gz" in example.c for RISCOS and VMS (Nick Smith)

   772 - add the OS/2 files in Makefile.in too (Andrew Zabolotny)

   773 - fix fdopen and halloc macros for Microsoft C 6.0 (Tom Lane)

   774 - fix maketree.c to allow clean compilation of inffixed.h (Mark)

   775 - fix parameter check in deflateCopy (Gunther Nikl)

   776 - cleanup trees.c, use compressed_len only in debug mode (Christian Spieler)

   777 - Many portability patches by Christian Spieler:

   778   . zutil.c, zutil.h: added "const" for zmem*

   779   . Make_vms.com: fixed some typos

   780   . Make_vms.com: msdos/Makefile.*: removed zutil.h from some dependency lists

   781   . msdos/Makefile.msc: remove "default rtl link library" info from obj files

   782   . msdos/Makefile.*: use model-dependent name for the built zlib library

   783   . msdos/Makefile.emx, nt/Makefile.emx, nt/Makefile.gcc:

   784      new makefiles, for emx (DOS/OS2), emx&rsxnt and mingw32 (Windows 9x / NT)

   785 - use define instead of typedef for Bytef also for MSC small/medium (Tom Lane)

   786 - replace __far with _far for better portability (Christian Spieler, Tom Lane)

   787 - fix test for errno.h in configure (Tim Newsham)

   788 

   789 Changes in 1.1.2 (19 March 98)

   790 - added contrib/minzip, mini zip and unzip based on zlib (Gilles Vollant)

   791   See http://www.winimage.com/zLibDll/unzip.html

   792 - preinitialize the inflate tables for fixed codes, to make the code

   793   completely thread safe (Mark)

   794 - some simplifications and slight speed-up to the inflate code (Mark)

   795 - fix gzeof on non-compressed files (Allan Schrum)

   796 - add -std1 option in configure for OSF1 to fix gzprintf (Martin Mokrejs)

   797 - use default value of 4K for Z_BUFSIZE for 16-bit MSDOS (Tim Wegner + Glenn)

   798 - added os2/Makefile.def and os2/zlib.def (Andrew Zabolotny)

   799 - add shared lib support for UNIX_SV4.2MP (MATSUURA Takanori)

   800 - do not wrap extern "C" around system includes (Tom Lane)

   801 - mention zlib binding for TCL in README (Andreas Kupries)

   802 - added amiga/Makefile.pup for Amiga powerUP SAS/C PPC (Andreas Kleinert)

   803 - allow "make install prefix=..." even after configure (Glenn Randers-Pehrson)

   804 - allow "configure --prefix $HOME" (Tim Mooney)

   805 - remove warnings in example.c and gzio.c (Glenn Randers-Pehrson)

   806 - move Makefile.sas to amiga/Makefile.sas

   807 

   808 Changes in 1.1.1 (27 Feb 98)

   809 - fix macros _tr_tally_* in deflate.h for debug mode  (Glenn Randers-Pehrson)

   810 - remove block truncation heuristic which had very marginal effect for zlib

   811   (smaller lit_bufsize than in gzip 1.2.4) and degraded a little the

   812   compression ratio on some files. This also allows inlining _tr_tally for

   813   matches in deflate_slow.

   814 - added msdos/Makefile.w32 for WIN32 Microsoft Visual C++ (Bob Frazier)

   815 

   816 Changes in 1.1.0 (24 Feb 98)

   817 - do not return STREAM_END prematurely in inflate (John Bowler)

   818 - revert to the zlib 1.0.8 inflate to avoid the gcc 2.8.0 bug (Jeremy Buhler)

   819 - compile with -DFASTEST to get compression code optimized for speed only

   820 - in minigzip, try mmap'ing the input file first (Miguel Albrecht)

   821 - increase size of I/O buffers in minigzip.c and gzio.c (not a big gain

   822   on Sun but significant on HP)

   823 

   824 - add a pointer to experimental unzip library in README (Gilles Vollant)

   825 - initialize variable gcc in configure (Chris Herborth)

   826 

   827 Changes in 1.0.9 (17 Feb 1998)

   828 - added gzputs and gzgets functions

   829 - do not clear eof flag in gzseek (Mark Diekhans)

   830 - fix gzseek for files in transparent mode (Mark Diekhans)

   831 - do not assume that vsprintf returns the number of bytes written (Jens Krinke)

   832 - replace EXPORT with ZEXPORT to avoid conflict with other programs

   833 - added compress2 in zconf.h, zlib.def, zlib.dnt

   834 - new asm code from Gilles Vollant in contrib/asm386

   835 - simplify the inflate code (Mark):

   836  . Replace ZALLOC's in huft_build() with single ZALLOC in inflate_blocks_new()

   837  . ZALLOC the length list in inflate_trees_fixed() instead of using stack

   838  . ZALLOC the value area for huft_build() instead of using stack

   839  . Simplify Z_FINISH check in inflate()

   840 

   841 - Avoid gcc 2.8.0 comparison bug a little differently than zlib 1.0.8

   842 - in inftrees.c, avoid cc -O bug on HP (Farshid Elahi)

   843 - in zconf.h move the ZLIB_DLL stuff earlier to avoid problems with

   844   the declaration of FAR (Gilles VOllant)

   845 - install libz.so* with mode 755 (executable) instead of 644 (Marc Lehmann)

   846 - read_buf buf parameter of type Bytef* instead of charf*

   847 - zmemcpy parameters are of type Bytef*, not charf* (Joseph Strout)

   848 - do not redeclare unlink in minigzip.c for WIN32 (John Bowler)

   849 - fix check for presence of directories in "make install" (Ian Willis)

   850 

   851 Changes in 1.0.8 (27 Jan 1998)

   852 - fixed offsets in contrib/asm386/gvmat32.asm (Gilles Vollant)

   853 - fix gzgetc and gzputc for big endian systems (Markus Oberhumer)

   854 - added compress2() to allow setting the compression level

   855 - include sys/types.h to get off_t on some systems (Marc Lehmann & QingLong)

   856 - use constant arrays for the static trees in trees.c instead of computing

   857   them at run time (thanks to Ken Raeburn for this suggestion). To create

   858   trees.h, compile with GEN_TREES_H and run "make test".

   859 - check return code of example in "make test" and display result

   860 - pass minigzip command line options to file_compress

   861 - simplifying code of inflateSync to avoid gcc 2.8 bug

   862 

   863 - support CC="gcc -Wall" in configure -s (QingLong)

   864 - avoid a flush caused by ftell in gzopen for write mode (Ken Raeburn)

   865 - fix test for shared library support to avoid compiler warnings

   866 - zlib.lib -> zlib.dll in msdos/zlib.rc (Gilles Vollant)

   867 - check for TARGET_OS_MAC in addition to MACOS (Brad Pettit)

   868 - do not use fdopen for Metrowerks on Mac (Brad Pettit))

   869 - add checks for gzputc and gzputc in example.c

   870 - avoid warnings in gzio.c and deflate.c (Andreas Kleinert)

   871 - use const for the CRC table (Ken Raeburn)

   872 - fixed "make uninstall" for shared libraries

   873 - use Tracev instead of Trace in infblock.c

   874 - in example.c use correct compressed length for test_sync

   875 - suppress +vnocompatwarnings in configure for HPUX (not always supported)

   876 

   877 Changes in 1.0.7 (20 Jan 1998)

   878 - fix gzseek which was broken in write mode

   879 - return error for gzseek to negative absolute position

   880 - fix configure for Linux (Chun-Chung Chen)

   881 - increase stack space for MSC (Tim Wegner)

   882 - get_crc_table and inflateSyncPoint are EXPORTed (Gilles Vollant)

   883 - define EXPORTVA for gzprintf (Gilles Vollant)

   884 - added man page zlib.3 (Rick Rodgers)

   885 - for contrib/untgz, fix makedir() and improve Makefile

   886 

   887 - check gzseek in write mode in example.c

   888 - allocate extra buffer for seeks only if gzseek is actually called

   889 - avoid signed/unsigned comparisons (Tim Wegner, Gilles Vollant)

   890 - add inflateSyncPoint in zconf.h

   891 - fix list of exported functions in nt/zlib.dnt and mdsos/zlib.def

   892 

   893 Changes in 1.0.6 (19 Jan 1998)

   894 - add functions gzprintf, gzputc, gzgetc, gztell, gzeof, gzseek, gzrewind and

   895   gzsetparams (thanks to Roland Giersig and Kevin Ruland for some of this code)

   896 - Fix a deflate bug occurring only with compression level 0 (thanks to

   897   Andy Buckler for finding this one).

   898 - In minigzip, pass transparently also the first byte for .Z files.

   899 - return Z_BUF_ERROR instead of Z_OK if output buffer full in uncompress()

   900 - check Z_FINISH in inflate (thanks to Marc Schluper)

   901 - Implement deflateCopy (thanks to Adam Costello)

   902 - make static libraries by default in configure, add --shared option.

   903 - move MSDOS or Windows specific files to directory msdos

   904 - suppress the notion of partial flush to simplify the interface

   905   (but the symbol Z_PARTIAL_FLUSH is kept for compatibility with 1.0.4)

   906 - suppress history buffer provided by application to simplify the interface

   907   (this feature was not implemented anyway in 1.0.4)

   908 - next_in and avail_in must be initialized before calling inflateInit or

   909   inflateInit2

   910 - add EXPORT in all exported functions (for Windows DLL)

   911 - added Makefile.nt (thanks to Stephen Williams)

   912 - added the unsupported "contrib" directory:

   913    contrib/asm386/ by Gilles Vollant <info@winimage.com>

   914         386 asm code replacing longest_match().

   915    contrib/iostream/ by Kevin Ruland <kevin@rodin.wustl.edu>

   916         A C++ I/O streams interface to the zlib gz* functions

   917    contrib/iostream2/  by Tyge Løvset <Tyge.Lovset@cmr.no>

   918         Another C++ I/O streams interface

   919    contrib/untgz/  by "Pedro A. Aranda Guti\irrez" <paag@tid.es>

   920         A very simple tar.gz file extractor using zlib

   921    contrib/visual-basic.txt by Carlos Rios <c_rios@sonda.cl>

   922         How to use compress(), uncompress() and the gz* functions from VB.

   923 - pass params -f (filtered data), -h (huffman only), -1 to -9 (compression

   924   level) in minigzip (thanks to Tom Lane)

   925 

   926 - use const for rommable constants in deflate

   927 - added test for gzseek and gztell in example.c

   928 - add undocumented function inflateSyncPoint() (hack for Paul Mackerras)

   929 - add undocumented function zError to convert error code to string

   930   (for Tim Smithers)

   931 - Allow compilation of gzio with -DNO_DEFLATE to avoid the compression code.

   932 - Use default memcpy for Symantec MSDOS compiler.

   933 - Add EXPORT keyword for check_func (needed for Windows DLL)

   934 - add current directory to LD_LIBRARY_PATH for "make test"

   935 - create also a link for libz.so.1

   936 - added support for FUJITSU UXP/DS (thanks to Toshiaki Nomura)

   937 - use $(SHAREDLIB) instead of libz.so in Makefile.in (for HPUX)

   938 - added -soname for Linux in configure (Chun-Chung Chen,

   939 - assign numbers to the exported functions in zlib.def (for Windows DLL)

   940 - add advice in zlib.h for best usage of deflateSetDictionary

   941 - work around compiler bug on Atari (cast Z_NULL in call of s->checkfn)

   942 - allow compilation with ANSI keywords only enabled for TurboC in large model

   943 - avoid "versionString"[0] (Borland bug)

   944 - add NEED_DUMMY_RETURN for Borland

   945 - use variable z_verbose for tracing in debug mode (L. Peter Deutsch).

   946 - allow compilation with CC

   947 - defined STDC for OS/2 (David Charlap)

   948 - limit external names to 8 chars for MVS (Thomas Lund)

   949 - in minigzip.c, use static buffers only for 16-bit systems

   950 - fix suffix check for "minigzip -d foo.gz"

   951 - do not return an error for the 2nd of two consecutive gzflush() (Felix Lee)

   952 - use _fdopen instead of fdopen for MSC >= 6.0 (Thomas Fanslau)

   953 - added makelcc.bat for lcc-win32 (Tom St Denis)

   954 - in Makefile.dj2, use copy and del instead of install and rm (Frank Donahoe)

   955 - Avoid expanded $Id$. Use "rcs -kb" or "cvs admin -kb" to avoid Id expansion.

   956 - check for unistd.h in configure (for off_t)

   957 - remove useless check parameter in inflate_blocks_free

   958 - avoid useless assignment of s->check to itself in inflate_blocks_new

   959 - do not flush twice in gzclose (thanks to Ken Raeburn)

   960 - rename FOPEN as F_OPEN to avoid clash with /usr/include/sys/file.h

   961 - use NO_ERRNO_H instead of enumeration of operating systems with errno.h

   962 - work around buggy fclose on pipes for HP/UX

   963 - support zlib DLL with BORLAND C++ 5.0 (thanks to Glenn Randers-Pehrson)

   964 - fix configure if CC is already equal to gcc

   965 

   966 Changes in 1.0.5 (3 Jan 98)

   967 - Fix inflate to terminate gracefully when fed corrupted or invalid data

   968 - Use const for rommable constants in inflate

   969 - Eliminate memory leaks on error conditions in inflate

   970 - Removed some vestigial code in inflate

   971 - Update web address in README

   972 

   973 Changes in 1.0.4 (24 Jul 96)

   974 - In very rare conditions, deflate(s, Z_FINISH) could fail to produce an EOF

   975   bit, so the decompressor could decompress all the correct data but went

   976   on to attempt decompressing extra garbage data. This affected minigzip too.

   977 - zlibVersion and gzerror return const char* (needed for DLL)

   978 - port to RISCOS (no fdopen, no multiple dots, no unlink, no fileno)

   979 - use z_error only for DEBUG (avoid problem with DLLs)

   980 

   981 Changes in 1.0.3 (2 Jul 96)

   982 - use z_streamp instead of z_stream *, which is now a far pointer in MSDOS

   983   small and medium models; this makes the library incompatible with previous

   984   versions for these models. (No effect in large model or on other systems.)

   985 - return OK instead of BUF_ERROR if previous deflate call returned with

   986   avail_out as zero but there is nothing to do

   987 - added memcmp for non STDC compilers

   988 - define NO_DUMMY_DECL for more Mac compilers (.h files merged incorrectly)

   989 - define __32BIT__ if __386__ or i386 is defined (pb. with Watcom and SCO)

   990 - better check for 16-bit mode MSC (avoids problem with Symantec)

   991 

   992 Changes in 1.0.2 (23 May 96)

   993 - added Windows DLL support

   994 - added a function zlibVersion (for the DLL support)

   995 - fixed declarations using Bytef in infutil.c (pb with MSDOS medium model)

   996 - Bytef is define's instead of typedef'd only for Borland C

   997 - avoid reading uninitialized memory in example.c

   998 - mention in README that the zlib format is now RFC1950

   999 - updated Makefile.dj2

  1000 - added algorithm.doc

  1001 

  1002 Changes in 1.0.1 (20 May 96) [1.0 skipped to avoid confusion]

  1003 - fix array overlay in deflate.c which sometimes caused bad compressed data

  1004 - fix inflate bug with empty stored block

  1005 - fix MSDOS medium model which was broken in 0.99

  1006 - fix deflateParams() which could generated bad compressed data.

  1007 - Bytef is define'd instead of typedef'ed (work around Borland bug)

  1008 - added an INDEX file

  1009 - new makefiles for DJGPP (Makefile.dj2), 32-bit Borland (Makefile.b32),

  1010   Watcom (Makefile.wat), Amiga SAS/C (Makefile.sas)

  1011 - speed up adler32 for modern machines without auto-increment

  1012 - added -ansi for IRIX in configure

  1013 - static_init_done in trees.c is an int

  1014 - define unlink as delete for VMS

  1015 - fix configure for QNX

  1016 - add configure branch for SCO and HPUX

  1017 - avoid many warnings (unused variables, dead assignments, etc...)

  1018 - no fdopen for BeOS

  1019 - fix the Watcom fix for 32 bit mode (define FAR as empty)

  1020 - removed redefinition of Byte for MKWERKS

  1021 - work around an MWKERKS bug (incorrect merge of all .h files)

  1022 

  1023 Changes in 0.99 (27 Jan 96)

  1024 - allow preset dictionary shared between compressor and decompressor

  1025 - allow compression level 0 (no compression)

  1026 - add deflateParams in zlib.h: allow dynamic change of compression level

  1027   and compression strategy.

  1028 - test large buffers and deflateParams in example.c

  1029 - add optional "configure" to build zlib as a shared library

  1030 - suppress Makefile.qnx, use configure instead

  1031 - fixed deflate for 64-bit systems (detected on Cray)

  1032 - fixed inflate_blocks for 64-bit systems (detected on Alpha)

  1033 - declare Z_DEFLATED in zlib.h (possible parameter for deflateInit2)

  1034 - always return Z_BUF_ERROR when deflate() has nothing to do

  1035 - deflateInit and inflateInit are now macros to allow version checking

  1036 - prefix all global functions and types with z_ with -DZ_PREFIX

  1037 - make falloc completely reentrant (inftrees.c)

  1038 - fixed very unlikely race condition in ct_static_init

  1039 - free in reverse order of allocation to help memory manager

  1040 - use zlib-1.0/* instead of zlib/* inside the tar.gz

  1041 - make zlib warning-free with "gcc -O3 -Wall -Wwrite-strings -Wpointer-arith

  1042   -Wconversion -Wstrict-prototypes -Wmissing-prototypes"

  1043 - allow gzread on concatenated .gz files

  1044 - deflateEnd now returns Z_DATA_ERROR if it was premature

  1045 - deflate is finally (?) fully deterministic (no matches beyond end of input)

  1046 - Document Z_SYNC_FLUSH

  1047 - add uninstall in Makefile

  1048 - Check for __cpluplus in zlib.h

  1049 - Better test in ct_align for partial flush

  1050 - avoid harmless warnings for Borland C++

  1051 - initialize hash_head in deflate.c

  1052 - avoid warning on fdopen (gzio.c) for HP cc -Aa

  1053 - include stdlib.h for STDC compilers

  1054 - include errno.h for Cray

  1055 - ignore error if ranlib doesn't exist

  1056 - call ranlib twice for NeXTSTEP

  1057 - use exec_prefix instead of prefix for libz.a

  1058 - renamed ct_* as _tr_* to avoid conflict with applications

  1059 - clear z->msg in inflateInit2 before any error return

  1060 - initialize opaque in example.c, gzio.c, deflate.c and inflate.c

  1061 - fixed typo in zconf.h (_GNUC__ => __GNUC__)

  1062 - check for WIN32 in zconf.h and zutil.c (avoid farmalloc in 32-bit mode)

  1063 - fix typo in Make_vms.com (f$trnlnm -> f$getsyi)

  1064 - in fcalloc, normalize pointer if size > 65520 bytes

  1065 - don't use special fcalloc for 32 bit Borland C++

  1066 - use STDC instead of __GO32__ to avoid redeclaring exit, calloc, etc...

  1067 - use Z_BINARY instead of BINARY

  1068 - document that gzclose after gzdopen will close the file

  1069 - allow "a" as mode in gzopen.

  1070 - fix error checking in gzread

  1071 - allow skipping .gz extra-field on pipes

  1072 - added reference to Perl interface in README

  1073 - put the crc table in FAR data (I dislike more and more the medium model :)

  1074 - added get_crc_table

  1075 - added a dimension to all arrays (Borland C can't count).

  1076 - workaround Borland C bug in declaration of inflate_codes_new & inflate_fast

  1077 - guard against multiple inclusion of *.h (for precompiled header on Mac)

  1078 - Watcom C pretends to be Microsoft C small model even in 32 bit mode.

  1079 - don't use unsized arrays to avoid silly warnings by Visual C++:

  1080      warning C4746: 'inflate_mask' : unsized array treated as  '__far'

  1081      (what's wrong with far data in far model?).

  1082 - define enum out of inflate_blocks_state to allow compilation with C++

  1083 

  1084 Changes in 0.95 (16 Aug 95)

  1085 - fix MSDOS small and medium model (now easier to adapt to any compiler)

  1086 - inlined send_bits

  1087 - fix the final (:-) bug for deflate with flush (output was correct but

  1088   not completely flushed in rare occasions).

  1089 - default window size is same for compression and decompression

  1090   (it's now sufficient to set MAX_WBITS in zconf.h).

  1091 - voidp -> voidpf and voidnp -> voidp (for consistency with other

  1092   typedefs and because voidnp was not near in large model).

  1093 

  1094 Changes in 0.94 (13 Aug 95)

  1095 - support MSDOS medium model

  1096 - fix deflate with flush (could sometimes generate bad output)

  1097 - fix deflateReset (zlib header was incorrectly suppressed)

  1098 - added support for VMS

  1099 - allow a compression level in gzopen()

  1100 - gzflush now calls fflush

  1101 - For deflate with flush, flush even if no more input is provided.

  1102 - rename libgz.a as libz.a

  1103 - avoid complex expression in infcodes.c triggering Turbo C bug

  1104 - work around a problem with gcc on Alpha (in INSERT_STRING)

  1105 - don't use inline functions (problem with some gcc versions)

  1106 - allow renaming of Byte, uInt, etc... with #define.

  1107 - avoid warning about (unused) pointer before start of array in deflate.c

  1108 - avoid various warnings in gzio.c, example.c, infblock.c, adler32.c, zutil.c

  1109 - avoid reserved word 'new' in trees.c

  1110 

  1111 Changes in 0.93 (25 June 95)

  1112 - temporarily disable inline functions

  1113 - make deflate deterministic

  1114 - give enough lookahead for PARTIAL_FLUSH

  1115 - Set binary mode for stdin/stdout in minigzip.c for OS/2

  1116 - don't even use signed char in inflate (not portable enough)

  1117 - fix inflate memory leak for segmented architectures

  1118 

  1119 Changes in 0.92 (3 May 95)

  1120 - don't assume that char is signed (problem on SGI)

  1121 - Clear bit buffer when starting a stored block

  1122 - no memcpy on Pyramid

  1123 - suppressed inftest.c

  1124 - optimized fill_window, put longest_match inline for gcc

  1125 - optimized inflate on stored blocks.

  1126 - untabify all sources to simplify patches

  1127 

  1128 Changes in 0.91 (2 May 95)

  1129 - Default MEM_LEVEL is 8 (not 9 for Unix) as documented in zlib.h

  1130 - Document the memory requirements in zconf.h

  1131 - added "make install"

  1132 - fix sync search logic in inflateSync

  1133 - deflate(Z_FULL_FLUSH) now works even if output buffer too short

  1134 - after inflateSync, don't scare people with just "lo world"

  1135 - added support for DJGPP

  1136