ChangeLog revision 145474
1 2 ChangeLog file for zlib 3 4Changes in 1.2.2 (3 October 2004) 5- Update zlib.h comments on gzip in-memory processing 6- Set adler to 1 in inflateReset() to support Java test suite [Walles] 7- Add contrib/dotzlib [Ravn] 8- Update win32/DLL_FAQ.txt [Truta] 9- Update contrib/minizip [Vollant] 10- Move contrib/visual-basic.txt to old/ [Truta] 11- Fix assembler builds in projects/visualc6/ [Truta] 12 13Changes in 1.2.1.2 (9 September 2004) 14- Update INDEX file 15- Fix trees.c to update strm->data_type (no one ever noticed!) 16- Fix bug in error case in inflate.c, infback.c, and infback9.c [Brown] 17- Add "volatile" to crc table flag declaration (for DYNAMIC_CRC_TABLE) 18- Add limited multitasking protection to DYNAMIC_CRC_TABLE 19- Add NO_vsnprintf for VMS in zutil.h [Mozilla] 20- Don't declare strerror() under VMS [Mozilla] 21- Add comment to DYNAMIC_CRC_TABLE to use get_crc_table() to initialize 22- Update contrib/ada [Anisimkov] 23- Update contrib/minizip [Vollant] 24- Fix configure to not hardcode directories for Darwin [Peterson] 25- Fix gzio.c to not return error on empty files [Brown] 26- Fix indentation; update version in contrib/delphi/ZLib.pas and 27 contrib/pascal/zlibpas.pas [Truta] 28- Update mkasm.bat in contrib/masmx86 [Truta] 29- Update contrib/untgz [Truta] 30- Add projects/README.projects [Truta] 31- Add project for MS Visual C++ 6.0 in projects/visualc6 [Cadieux, Truta] 32- Update win32/DLL_FAQ.txt [Truta] 33- Update list of Z_PREFIX symbols in zconf.h [Randers-Pehrson, Truta] 34- Remove an unnecessary assignment to curr in inftrees.c [Truta] 35- Add OS/2 to exe builds in configure [Poltorak] 36- Remove err dummy parameter in zlib.h [Kientzle] 37 38Changes in 1.2.1.1 (9 January 2004) 39- Update email address in README 40- Several FAQ updates 41- Fix a big fat bug in inftrees.c that prevented decoding valid 42 dynamic blocks with only literals and no distance codes -- 43 Thanks to "Hot Emu" for the bug report and sample file 44- Add a note to puff.c on no distance codes case. 45 46Changes in 1.2.1 (17 November 2003) 47- Remove a tab in contrib/gzappend/gzappend.c 48- Update some interfaces in contrib for new zlib functions 49- Update zlib version number in some contrib entries 50- Add Windows CE definition for ptrdiff_t in zutil.h [Mai, Truta] 51- Support shared libraries on Hurd and KFreeBSD [Brown] 52- Fix error in NO_DIVIDE option of adler32.c 53 54Changes in 1.2.0.8 (4 November 2003) 55- Update version in contrib/delphi/ZLib.pas and contrib/pascal/zlibpas.pas 56- Add experimental NO_DIVIDE #define in adler32.c 57 - Possibly faster on some processors (let me know if it is) 58- Correct Z_BLOCK to not return on first inflate call if no wrap 59- Fix strm->data_type on inflate() return to correctly indicate EOB 60- Add deflatePrime() function for appending in the middle of a byte 61- Add contrib/gzappend for an example of appending to a stream 62- Update win32/DLL_FAQ.txt [Truta] 63- Delete Turbo C comment in README [Truta] 64- Improve some indentation in zconf.h [Truta] 65- Fix infinite loop on bad input in configure script [Church] 66- Fix gzeof() for concatenated gzip files [Johnson] 67- Add example to contrib/visual-basic.txt [Michael B.] 68- Add -p to mkdir's in Makefile.in [vda] 69- Fix configure to properly detect presence or lack of printf functions 70- Add AS400 support [Monnerat] 71- Add a little Cygwin support [Wilson] 72 73Changes in 1.2.0.7 (21 September 2003) 74- Correct some debug formats in contrib/infback9 75- Cast a type in a debug statement in trees.c 76- Change search and replace delimiter in configure from % to # [Beebe] 77- Update contrib/untgz to 0.2 with various fixes [Truta] 78- Add build support for Amiga [Nikl] 79- Remove some directories in old that have been updated to 1.2 80- Add dylib building for Mac OS X in configure and Makefile.in 81- Remove old distribution stuff from Makefile 82- Update README to point to DLL_FAQ.txt, and add comment on Mac OS X 83- Update links in README 84 85Changes in 1.2.0.6 (13 September 2003) 86- Minor FAQ updates 87- Update contrib/minizip to 1.00 [Vollant] 88- Remove test of gz functions in example.c when GZ_COMPRESS defined [Truta] 89- Update POSTINC comment for 68060 [Nikl] 90- Add contrib/infback9 with deflate64 decoding (unsupported) 91- For MVS define NO_vsnprintf and undefine FAR [van Burik] 92- Add pragma for fdopen on MVS [van Burik] 93 94Changes in 1.2.0.5 (8 September 2003) 95- Add OF to inflateBackEnd() declaration in zlib.h 96- Remember start when using gzdopen in the middle of a file 97- Use internal off_t counters in gz* functions to properly handle seeks 98- Perform more rigorous check for distance-too-far in inffast.c 99- Add Z_BLOCK flush option to return from inflate at block boundary 100- Set strm->data_type on return from inflate 101 - Indicate bits unused, if at block boundary, and if in last block 102- Replace size_t with ptrdiff_t in crc32.c, and check for correct size 103- Add condition so old NO_DEFLATE define still works for compatibility 104- FAQ update regarding the Windows DLL [Truta] 105- INDEX update: add qnx entry, remove aix entry [Truta] 106- Install zlib.3 into mandir [Wilson] 107- Move contrib/zlib_dll_FAQ.txt to win32/DLL_FAQ.txt; update [Truta] 108- Adapt the zlib interface to the new DLL convention guidelines [Truta] 109- Introduce ZLIB_WINAPI macro to allow the export of functions using 110 the WINAPI calling convention, for Visual Basic [Vollant, Truta] 111- Update msdos and win32 scripts and makefiles [Truta] 112- Export symbols by name, not by ordinal, in win32/zlib.def [Truta] 113- Add contrib/ada [Anisimkov] 114- Move asm files from contrib/vstudio/vc70_32 to contrib/asm386 [Truta] 115- Rename contrib/asm386 to contrib/masmx86 [Truta, Vollant] 116- Add contrib/masm686 [Truta] 117- Fix offsets in contrib/inflate86 and contrib/masmx86/inffas32.asm 118 [Truta, Vollant] 119- Update contrib/delphi; rename to contrib/pascal; add example [Truta] 120- Remove contrib/delphi2; add a new contrib/delphi [Truta] 121- Avoid inclusion of the nonstandard <memory.h> in contrib/iostream, 122 and fix some method prototypes [Truta] 123- Fix the ZCR_SEED2 constant to avoid warnings in contrib/minizip 124 [Truta] 125- Avoid the use of backslash (\) in contrib/minizip [Vollant] 126- Fix file time handling in contrib/untgz; update makefiles [Truta] 127- Update contrib/vstudio/vc70_32 to comply with the new DLL guidelines 128 [Vollant] 129- Remove contrib/vstudio/vc15_16 [Vollant] 130- Rename contrib/vstudio/vc70_32 to contrib/vstudio/vc7 [Truta] 131- Update README.contrib [Truta] 132- Invert the assignment order of match_head and s->prev[...] in 133 INSERT_STRING [Truta] 134- Compare TOO_FAR with 32767 instead of 32768, to avoid 16-bit warnings 135 [Truta] 136- Compare function pointers with 0, not with NULL or Z_NULL [Truta] 137- Fix prototype of syncsearch in inflate.c [Truta] 138- Introduce ASMINF macro to be enabled when using an ASM implementation 139 of inflate_fast [Truta] 140- Change NO_DEFLATE to NO_GZCOMPRESS [Truta] 141- Modify test_gzio in example.c to take a single file name as a 142 parameter [Truta] 143- Exit the example.c program if gzopen fails [Truta] 144- Add type casts around strlen in example.c [Truta] 145- Remove casting to sizeof in minigzip.c; give a proper type 146 to the variable compared with SUFFIX_LEN [Truta] 147- Update definitions of STDC and STDC99 in zconf.h [Truta] 148- Synchronize zconf.h with the new Windows DLL interface [Truta] 149- Use SYS16BIT instead of __32BIT__ to distinguish between 150 16- and 32-bit platforms [Truta] 151- Use far memory allocators in small 16-bit memory models for 152 Turbo C [Truta] 153- Add info about the use of ASMV, ASMINF and ZLIB_WINAPI in 154 zlibCompileFlags [Truta] 155- Cygwin has vsnprintf [Wilson] 156- In Windows16, OS_CODE is 0, as in MSDOS [Truta] 157- In Cygwin, OS_CODE is 3 (Unix), not 11 (Windows32) [Wilson] 158 159Changes in 1.2.0.4 (10 August 2003) 160- Minor FAQ updates 161- Be more strict when checking inflateInit2's windowBits parameter 162- Change NO_GUNZIP compile option to NO_GZIP to cover deflate as well 163- Add gzip wrapper option to deflateInit2 using windowBits 164- Add updated QNX rule in configure and qnx directory [Bonnefoy] 165- Make inflate distance-too-far checks more rigorous 166- Clean up FAR usage in inflate 167- Add casting to sizeof() in gzio.c and minigzip.c 168 169Changes in 1.2.0.3 (19 July 2003) 170- Fix silly error in gzungetc() implementation [Vollant] 171- Update contrib/minizip and contrib/vstudio [Vollant] 172- Fix printf format in example.c 173- Correct cdecl support in zconf.in.h [Anisimkov] 174- Minor FAQ updates 175 176Changes in 1.2.0.2 (13 July 2003) 177- Add ZLIB_VERNUM in zlib.h for numerical preprocessor comparisons 178- Attempt to avoid warnings in crc32.c for pointer-int conversion 179- Add AIX to configure, remove aix directory [Bakker] 180- Add some casts to minigzip.c 181- Improve checking after insecure sprintf() or vsprintf() calls 182- Remove #elif's from crc32.c 183- Change leave label to inf_leave in inflate.c and infback.c to avoid 184 library conflicts 185- Remove inflate gzip decoding by default--only enable gzip decoding by 186 special request for stricter backward compatibility 187- Add zlibCompileFlags() function to return compilation information 188- More typecasting in deflate.c to avoid warnings 189- Remove leading underscore from _Capital #defines [Truta] 190- Fix configure to link shared library when testing 191- Add some Windows CE target adjustments [Mai] 192- Remove #define ZLIB_DLL in zconf.h [Vollant] 193- Add zlib.3 [Rodgers] 194- Update RFC URL in deflate.c and algorithm.txt [Mai] 195- Add zlib_dll_FAQ.txt to contrib [Truta] 196- Add UL to some constants [Truta] 197- Update minizip and vstudio [Vollant] 198- Remove vestigial NEED_DUMMY_RETURN from zconf.in.h 199- Expand use of NO_DUMMY_DECL to avoid all dummy structures 200- Added iostream3 to contrib [Schwardt] 201- Replace rewind() with fseek() for WinCE [Truta] 202- Improve setting of zlib format compression level flags 203 - Report 0 for huffman and rle strategies and for level == 0 or 1 204 - Report 2 only for level == 6 205- Only deal with 64K limit when necessary at compile time [Truta] 206- Allow TOO_FAR check to be turned off at compile time [Truta] 207- Add gzclearerr() function [Souza] 208- Add gzungetc() function 209 210Changes in 1.2.0.1 (17 March 2003) 211- Add Z_RLE strategy for run-length encoding [Truta] 212 - When Z_RLE requested, restrict matches to distance one 213 - Update zlib.h, minigzip.c, gzopen(), gzdopen() for Z_RLE 214- Correct FASTEST compilation to allow level == 0 215- Clean up what gets compiled for FASTEST 216- Incorporate changes to zconf.in.h [Vollant] 217 - Refine detection of Turbo C need for dummy returns 218 - Refine ZLIB_DLL compilation 219 - Include additional header file on VMS for off_t typedef 220- Try to use _vsnprintf where it supplants vsprintf [Vollant] 221- Add some casts in inffast.c 222- Enchance comments in zlib.h on what happens if gzprintf() tries to 223 write more than 4095 bytes before compression 224- Remove unused state from inflateBackEnd() 225- Remove exit(0) from minigzip.c, example.c 226- Get rid of all those darn tabs 227- Add "check" target to Makefile.in that does the same thing as "test" 228- Add "mostlyclean" and "maintainer-clean" targets to Makefile.in 229- Update contrib/inflate86 [Anderson] 230- Update contrib/testzlib, contrib/vstudio, contrib/minizip [Vollant] 231- Add msdos and win32 directories with makefiles [Truta] 232- More additions and improvements to the FAQ 233 234Changes in 1.2.0 (9 March 2003) 235- New and improved inflate code 236 - About 20% faster 237 - Does not allocate 32K window unless and until needed 238 - Automatically detects and decompresses gzip streams 239 - Raw inflate no longer needs an extra dummy byte at end 240 - Added inflateBack functions using a callback interface--even faster 241 than inflate, useful for file utilities (gzip, zip) 242 - Added inflateCopy() function to record state for random access on 243 externally generated deflate streams (e.g. in gzip files) 244 - More readable code (I hope) 245- New and improved crc32() 246 - About 50% faster, thanks to suggestions from Rodney Brown 247- Add deflateBound() and compressBound() functions 248- Fix memory leak in deflateInit2() 249- Permit setting dictionary for raw deflate (for parallel deflate) 250- Fix const declaration for gzwrite() 251- Check for some malloc() failures in gzio.c 252- Fix bug in gzopen() on single-byte file 0x1f 253- Fix bug in gzread() on concatenated file with 0x1f at end of buffer 254 and next buffer doesn't start with 0x8b 255- Fix uncompress() to return Z_DATA_ERROR on truncated input 256- Free memory at end of example.c 257- Remove MAX #define in trees.c (conflicted with some libraries) 258- Fix static const's in deflate.c, gzio.c, and zutil.[ch] 259- Declare malloc() and free() in gzio.c if STDC not defined 260- Use malloc() instead of calloc() in zutil.c if int big enough 261- Define STDC for AIX 262- Add aix/ with approach for compiling shared library on AIX 263- Add HP-UX support for shared libraries in configure 264- Add OpenUNIX support for shared libraries in configure 265- Use $cc instead of gcc to build shared library 266- Make prefix directory if needed when installing 267- Correct Macintosh avoidance of typedef Byte in zconf.h 268- Correct Turbo C memory allocation when under Linux 269- Use libz.a instead of -lz in Makefile (assure use of compiled library) 270- Update configure to check for snprintf or vsnprintf functions and their 271 return value, warn during make if using an insecure function 272- Fix configure problem with compile-time knowledge of HAVE_UNISTD_H that 273 is lost when library is used--resolution is to build new zconf.h 274- Documentation improvements (in zlib.h): 275 - Document raw deflate and inflate 276 - Update RFCs URL 277 - Point out that zlib and gzip formats are different 278 - Note that Z_BUF_ERROR is not fatal 279 - Document string limit for gzprintf() and possible buffer overflow 280 - Note requirement on avail_out when flushing 281 - Note permitted values of flush parameter of inflate() 282- Add some FAQs (and even answers) to the FAQ 283- Add contrib/inflate86/ for x86 faster inflate 284- Add contrib/blast/ for PKWare Data Compression Library decompression 285- Add contrib/puff/ simple inflate for deflate format description 286 287Changes in 1.1.4 (11 March 2002) 288- ZFREE was repeated on same allocation on some error conditions. 289 This creates a security problem described in 290 http://www.zlib.org/advisory-2002-03-11.txt 291- Returned incorrect error (Z_MEM_ERROR) on some invalid data 292- Avoid accesses before window for invalid distances with inflate window 293 less than 32K. 294- force windowBits > 8 to avoid a bug in the encoder for a window size 295 of 256 bytes. (A complete fix will be available in 1.1.5). 296 297Changes in 1.1.3 (9 July 1998) 298- fix "an inflate input buffer bug that shows up on rare but persistent 299 occasions" (Mark) 300- fix gzread and gztell for concatenated .gz files (Didier Le Botlan) 301- fix gzseek(..., SEEK_SET) in write mode 302- fix crc check after a gzeek (Frank Faubert) 303- fix miniunzip when the last entry in a zip file is itself a zip file 304 (J Lillge) 305- add contrib/asm586 and contrib/asm686 (Brian Raiter) 306 See http://www.muppetlabs.com/~breadbox/software/assembly.html 307- add support for Delphi 3 in contrib/delphi (Bob Dellaca) 308- add support for C++Builder 3 and Delphi 3 in contrib/delphi2 (Davide Moretti) 309- do not exit prematurely in untgz if 0 at start of block (Magnus Holmgren) 310- use macro EXTERN instead of extern to support DLL for BeOS (Sander Stoks) 311- added a FAQ file 312 313- Support gzdopen on Mac with Metrowerks (Jason Linhart) 314- Do not redefine Byte on Mac (Brad Pettit & Jason Linhart) 315- define SEEK_END too if SEEK_SET is not defined (Albert Chin-A-Young) 316- avoid some warnings with Borland C (Tom Tanner) 317- fix a problem in contrib/minizip/zip.c for 16-bit MSDOS (Gilles Vollant) 318- emulate utime() for WIN32 in contrib/untgz (Gilles Vollant) 319- allow several arguments to configure (Tim Mooney, Frodo Looijaard) 320- use libdir and includedir in Makefile.in (Tim Mooney) 321- support shared libraries on OSF1 V4 (Tim Mooney) 322- remove so_locations in "make clean" (Tim Mooney) 323- fix maketree.c compilation error (Glenn, Mark) 324- Python interface to zlib now in Python 1.5 (Jeremy Hylton) 325- new Makefile.riscos (Rich Walker) 326- initialize static descriptors in trees.c for embedded targets (Nick Smith) 327- use "foo-gz" in example.c for RISCOS and VMS (Nick Smith) 328- add the OS/2 files in Makefile.in too (Andrew Zabolotny) 329- fix fdopen and halloc macros for Microsoft C 6.0 (Tom Lane) 330- fix maketree.c to allow clean compilation of inffixed.h (Mark) 331- fix parameter check in deflateCopy (Gunther Nikl) 332- cleanup trees.c, use compressed_len only in debug mode (Christian Spieler) 333- Many portability patches by Christian Spieler: 334 . zutil.c, zutil.h: added "const" for zmem* 335 . Make_vms.com: fixed some typos 336 . Make_vms.com: msdos/Makefile.*: removed zutil.h from some dependency lists 337 . msdos/Makefile.msc: remove "default rtl link library" info from obj files 338 . msdos/Makefile.*: use model-dependent name for the built zlib library 339 . msdos/Makefile.emx, nt/Makefile.emx, nt/Makefile.gcc: 340 new makefiles, for emx (DOS/OS2), emx&rsxnt and mingw32 (Windows 9x / NT) 341- use define instead of typedef for Bytef also for MSC small/medium (Tom Lane) 342- replace __far with _far for better portability (Christian Spieler, Tom Lane) 343- fix test for errno.h in configure (Tim Newsham) 344 345Changes in 1.1.2 (19 March 98) 346- added contrib/minzip, mini zip and unzip based on zlib (Gilles Vollant) 347 See http://www.winimage.com/zLibDll/unzip.html 348- preinitialize the inflate tables for fixed codes, to make the code 349 completely thread safe (Mark) 350- some simplifications and slight speed-up to the inflate code (Mark) 351- fix gzeof on non-compressed files (Allan Schrum) 352- add -std1 option in configure for OSF1 to fix gzprintf (Martin Mokrejs) 353- use default value of 4K for Z_BUFSIZE for 16-bit MSDOS (Tim Wegner + Glenn) 354- added os2/Makefile.def and os2/zlib.def (Andrew Zabolotny) 355- add shared lib support for UNIX_SV4.2MP (MATSUURA Takanori) 356- do not wrap extern "C" around system includes (Tom Lane) 357- mention zlib binding for TCL in README (Andreas Kupries) 358- added amiga/Makefile.pup for Amiga powerUP SAS/C PPC (Andreas Kleinert) 359- allow "make install prefix=..." even after configure (Glenn Randers-Pehrson) 360- allow "configure --prefix $HOME" (Tim Mooney) 361- remove warnings in example.c and gzio.c (Glenn Randers-Pehrson) 362- move Makefile.sas to amiga/Makefile.sas 363 364Changes in 1.1.1 (27 Feb 98) 365- fix macros _tr_tally_* in deflate.h for debug mode (Glenn Randers-Pehrson) 366- remove block truncation heuristic which had very marginal effect for zlib 367 (smaller lit_bufsize than in gzip 1.2.4) and degraded a little the 368 compression ratio on some files. This also allows inlining _tr_tally for 369 matches in deflate_slow. 370- added msdos/Makefile.w32 for WIN32 Microsoft Visual C++ (Bob Frazier) 371 372Changes in 1.1.0 (24 Feb 98) 373- do not return STREAM_END prematurely in inflate (John Bowler) 374- revert to the zlib 1.0.8 inflate to avoid the gcc 2.8.0 bug (Jeremy Buhler) 375- compile with -DFASTEST to get compression code optimized for speed only 376- in minigzip, try mmap'ing the input file first (Miguel Albrecht) 377- increase size of I/O buffers in minigzip.c and gzio.c (not a big gain 378 on Sun but significant on HP) 379 380- add a pointer to experimental unzip library in README (Gilles Vollant) 381- initialize variable gcc in configure (Chris Herborth) 382 383Changes in 1.0.9 (17 Feb 1998) 384- added gzputs and gzgets functions 385- do not clear eof flag in gzseek (Mark Diekhans) 386- fix gzseek for files in transparent mode (Mark Diekhans) 387- do not assume that vsprintf returns the number of bytes written (Jens Krinke) 388- replace EXPORT with ZEXPORT to avoid conflict with other programs 389- added compress2 in zconf.h, zlib.def, zlib.dnt 390- new asm code from Gilles Vollant in contrib/asm386 391- simplify the inflate code (Mark): 392 . Replace ZALLOC's in huft_build() with single ZALLOC in inflate_blocks_new() 393 . ZALLOC the length list in inflate_trees_fixed() instead of using stack 394 . ZALLOC the value area for huft_build() instead of using stack 395 . Simplify Z_FINISH check in inflate() 396 397- Avoid gcc 2.8.0 comparison bug a little differently than zlib 1.0.8 398- in inftrees.c, avoid cc -O bug on HP (Farshid Elahi) 399- in zconf.h move the ZLIB_DLL stuff earlier to avoid problems with 400 the declaration of FAR (Gilles VOllant) 401- install libz.so* with mode 755 (executable) instead of 644 (Marc Lehmann) 402- read_buf buf parameter of type Bytef* instead of charf* 403- zmemcpy parameters are of type Bytef*, not charf* (Joseph Strout) 404- do not redeclare unlink in minigzip.c for WIN32 (John Bowler) 405- fix check for presence of directories in "make install" (Ian Willis) 406 407Changes in 1.0.8 (27 Jan 1998) 408- fixed offsets in contrib/asm386/gvmat32.asm (Gilles Vollant) 409- fix gzgetc and gzputc for big endian systems (Markus Oberhumer) 410- added compress2() to allow setting the compression level 411- include sys/types.h to get off_t on some systems (Marc Lehmann & QingLong) 412- use constant arrays for the static trees in trees.c instead of computing 413 them at run time (thanks to Ken Raeburn for this suggestion). To create 414 trees.h, compile with GEN_TREES_H and run "make test". 415- check return code of example in "make test" and display result 416- pass minigzip command line options to file_compress 417- simplifying code of inflateSync to avoid gcc 2.8 bug 418 419- support CC="gcc -Wall" in configure -s (QingLong) 420- avoid a flush caused by ftell in gzopen for write mode (Ken Raeburn) 421- fix test for shared library support to avoid compiler warnings 422- zlib.lib -> zlib.dll in msdos/zlib.rc (Gilles Vollant) 423- check for TARGET_OS_MAC in addition to MACOS (Brad Pettit) 424- do not use fdopen for Metrowerks on Mac (Brad Pettit)) 425- add checks for gzputc and gzputc in example.c 426- avoid warnings in gzio.c and deflate.c (Andreas Kleinert) 427- use const for the CRC table (Ken Raeburn) 428- fixed "make uninstall" for shared libraries 429- use Tracev instead of Trace in infblock.c 430- in example.c use correct compressed length for test_sync 431- suppress +vnocompatwarnings in configure for HPUX (not always supported) 432 433Changes in 1.0.7 (20 Jan 1998) 434- fix gzseek which was broken in write mode 435- return error for gzseek to negative absolute position 436- fix configure for Linux (Chun-Chung Chen) 437- increase stack space for MSC (Tim Wegner) 438- get_crc_table and inflateSyncPoint are EXPORTed (Gilles Vollant) 439- define EXPORTVA for gzprintf (Gilles Vollant) 440- added man page zlib.3 (Rick Rodgers) 441- for contrib/untgz, fix makedir() and improve Makefile 442 443- check gzseek in write mode in example.c 444- allocate extra buffer for seeks only if gzseek is actually called 445- avoid signed/unsigned comparisons (Tim Wegner, Gilles Vollant) 446- add inflateSyncPoint in zconf.h 447- fix list of exported functions in nt/zlib.dnt and mdsos/zlib.def 448 449Changes in 1.0.6 (19 Jan 1998) 450- add functions gzprintf, gzputc, gzgetc, gztell, gzeof, gzseek, gzrewind and 451 gzsetparams (thanks to Roland Giersig and Kevin Ruland for some of this code) 452- Fix a deflate bug occuring only with compression level 0 (thanks to 453 Andy Buckler for finding this one). 454- In minigzip, pass transparently also the first byte for .Z files. 455- return Z_BUF_ERROR instead of Z_OK if output buffer full in uncompress() 456- check Z_FINISH in inflate (thanks to Marc Schluper) 457- Implement deflateCopy (thanks to Adam Costello) 458- make static libraries by default in configure, add --shared option. 459- move MSDOS or Windows specific files to directory msdos 460- suppress the notion of partial flush to simplify the interface 461 (but the symbol Z_PARTIAL_FLUSH is kept for compatibility with 1.0.4) 462- suppress history buffer provided by application to simplify the interface 463 (this feature was not implemented anyway in 1.0.4) 464- next_in and avail_in must be initialized before calling inflateInit or 465 inflateInit2 466- add EXPORT in all exported functions (for Windows DLL) 467- added Makefile.nt (thanks to Stephen Williams) 468- added the unsupported "contrib" directory: 469 contrib/asm386/ by Gilles Vollant <info@winimage.com> 470 386 asm code replacing longest_match(). 471 contrib/iostream/ by Kevin Ruland <kevin@rodin.wustl.edu> 472 A C++ I/O streams interface to the zlib gz* functions 473 contrib/iostream2/ by Tyge L�vset <Tyge.Lovset@cmr.no> 474 Another C++ I/O streams interface 475 contrib/untgz/ by "Pedro A. Aranda Guti\irrez" <paag@tid.es> 476 A very simple tar.gz file extractor using zlib 477 contrib/visual-basic.txt by Carlos Rios <c_rios@sonda.cl> 478 How to use compress(), uncompress() and the gz* functions from VB. 479- pass params -f (filtered data), -h (huffman only), -1 to -9 (compression 480 level) in minigzip (thanks to Tom Lane) 481 482- use const for rommable constants in deflate 483- added test for gzseek and gztell in example.c 484- add undocumented function inflateSyncPoint() (hack for Paul Mackerras) 485- add undocumented function zError to convert error code to string 486 (for Tim Smithers) 487- Allow compilation of gzio with -DNO_DEFLATE to avoid the compression code. 488- Use default memcpy for Symantec MSDOS compiler. 489- Add EXPORT keyword for check_func (needed for Windows DLL) 490- add current directory to LD_LIBRARY_PATH for "make test" 491- create also a link for libz.so.1 492- added support for FUJITSU UXP/DS (thanks to Toshiaki Nomura) 493- use $(SHAREDLIB) instead of libz.so in Makefile.in (for HPUX) 494- added -soname for Linux in configure (Chun-Chung Chen, 495- assign numbers to the exported functions in zlib.def (for Windows DLL) 496- add advice in zlib.h for best usage of deflateSetDictionary 497- work around compiler bug on Atari (cast Z_NULL in call of s->checkfn) 498- allow compilation with ANSI keywords only enabled for TurboC in large model 499- avoid "versionString"[0] (Borland bug) 500- add NEED_DUMMY_RETURN for Borland 501- use variable z_verbose for tracing in debug mode (L. Peter Deutsch). 502- allow compilation with CC 503- defined STDC for OS/2 (David Charlap) 504- limit external names to 8 chars for MVS (Thomas Lund) 505- in minigzip.c, use static buffers only for 16-bit systems 506- fix suffix check for "minigzip -d foo.gz" 507- do not return an error for the 2nd of two consecutive gzflush() (Felix Lee) 508- use _fdopen instead of fdopen for MSC >= 6.0 (Thomas Fanslau) 509- added makelcc.bat for lcc-win32 (Tom St Denis) 510- in Makefile.dj2, use copy and del instead of install and rm (Frank Donahoe) 511- Avoid expanded $Id$. Use "rcs -kb" or "cvs admin -kb" to avoid Id expansion. 512- check for unistd.h in configure (for off_t) 513- remove useless check parameter in inflate_blocks_free 514- avoid useless assignment of s->check to itself in inflate_blocks_new 515- do not flush twice in gzclose (thanks to Ken Raeburn) 516- rename FOPEN as F_OPEN to avoid clash with /usr/include/sys/file.h 517- use NO_ERRNO_H instead of enumeration of operating systems with errno.h 518- work around buggy fclose on pipes for HP/UX 519- support zlib DLL with BORLAND C++ 5.0 (thanks to Glenn Randers-Pehrson) 520- fix configure if CC is already equal to gcc 521 522Changes in 1.0.5 (3 Jan 98) 523- Fix inflate to terminate gracefully when fed corrupted or invalid data 524- Use const for rommable constants in inflate 525- Eliminate memory leaks on error conditions in inflate 526- Removed some vestigial code in inflate 527- Update web address in README 528 529Changes in 1.0.4 (24 Jul 96) 530- In very rare conditions, deflate(s, Z_FINISH) could fail to produce an EOF 531 bit, so the decompressor could decompress all the correct data but went 532 on to attempt decompressing extra garbage data. This affected minigzip too. 533- zlibVersion and gzerror return const char* (needed for DLL) 534- port to RISCOS (no fdopen, no multiple dots, no unlink, no fileno) 535- use z_error only for DEBUG (avoid problem with DLLs) 536 537Changes in 1.0.3 (2 Jul 96) 538- use z_streamp instead of z_stream *, which is now a far pointer in MSDOS 539 small and medium models; this makes the library incompatible with previous 540 versions for these models. (No effect in large model or on other systems.) 541- return OK instead of BUF_ERROR if previous deflate call returned with 542 avail_out as zero but there is nothing to do 543- added memcmp for non STDC compilers 544- define NO_DUMMY_DECL for more Mac compilers (.h files merged incorrectly) 545- define __32BIT__ if __386__ or i386 is defined (pb. with Watcom and SCO) 546- better check for 16-bit mode MSC (avoids problem with Symantec) 547 548Changes in 1.0.2 (23 May 96) 549- added Windows DLL support 550- added a function zlibVersion (for the DLL support) 551- fixed declarations using Bytef in infutil.c (pb with MSDOS medium model) 552- Bytef is define's instead of typedef'd only for Borland C 553- avoid reading uninitialized memory in example.c 554- mention in README that the zlib format is now RFC1950 555- updated Makefile.dj2 556- added algorithm.doc 557 558Changes in 1.0.1 (20 May 96) [1.0 skipped to avoid confusion] 559- fix array overlay in deflate.c which sometimes caused bad compressed data 560- fix inflate bug with empty stored block 561- fix MSDOS medium model which was broken in 0.99 562- fix deflateParams() which could generated bad compressed data. 563- Bytef is define'd instead of typedef'ed (work around Borland bug) 564- added an INDEX file 565- new makefiles for DJGPP (Makefile.dj2), 32-bit Borland (Makefile.b32), 566 Watcom (Makefile.wat), Amiga SAS/C (Makefile.sas) 567- speed up adler32 for modern machines without auto-increment 568- added -ansi for IRIX in configure 569- static_init_done in trees.c is an int 570- define unlink as delete for VMS 571- fix configure for QNX 572- add configure branch for SCO and HPUX 573- avoid many warnings (unused variables, dead assignments, etc...) 574- no fdopen for BeOS 575- fix the Watcom fix for 32 bit mode (define FAR as empty) 576- removed redefinition of Byte for MKWERKS 577- work around an MWKERKS bug (incorrect merge of all .h files) 578 579Changes in 0.99 (27 Jan 96) 580- allow preset dictionary shared between compressor and decompressor 581- allow compression level 0 (no compression) 582- add deflateParams in zlib.h: allow dynamic change of compression level 583 and compression strategy. 584- test large buffers and deflateParams in example.c 585- add optional "configure" to build zlib as a shared library 586- suppress Makefile.qnx, use configure instead 587- fixed deflate for 64-bit systems (detected on Cray) 588- fixed inflate_blocks for 64-bit systems (detected on Alpha) 589- declare Z_DEFLATED in zlib.h (possible parameter for deflateInit2) 590- always return Z_BUF_ERROR when deflate() has nothing to do 591- deflateInit and inflateInit are now macros to allow version checking 592- prefix all global functions and types with z_ with -DZ_PREFIX 593- make falloc completely reentrant (inftrees.c) 594- fixed very unlikely race condition in ct_static_init 595- free in reverse order of allocation to help memory manager 596- use zlib-1.0/* instead of zlib/* inside the tar.gz 597- make zlib warning-free with "gcc -O3 -Wall -Wwrite-strings -Wpointer-arith 598 -Wconversion -Wstrict-prototypes -Wmissing-prototypes" 599- allow gzread on concatenated .gz files 600- deflateEnd now returns Z_DATA_ERROR if it was premature 601- deflate is finally (?) fully deterministic (no matches beyond end of input) 602- Document Z_SYNC_FLUSH 603- add uninstall in Makefile 604- Check for __cpluplus in zlib.h 605- Better test in ct_align for partial flush 606- avoid harmless warnings for Borland C++ 607- initialize hash_head in deflate.c 608- avoid warning on fdopen (gzio.c) for HP cc -Aa 609- include stdlib.h for STDC compilers 610- include errno.h for Cray 611- ignore error if ranlib doesn't exist 612- call ranlib twice for NeXTSTEP 613- use exec_prefix instead of prefix for libz.a 614- renamed ct_* as _tr_* to avoid conflict with applications 615- clear z->msg in inflateInit2 before any error return 616- initialize opaque in example.c, gzio.c, deflate.c and inflate.c 617- fixed typo in zconf.h (_GNUC__ => __GNUC__) 618- check for WIN32 in zconf.h and zutil.c (avoid farmalloc in 32-bit mode) 619- fix typo in Make_vms.com (f$trnlnm -> f$getsyi) 620- in fcalloc, normalize pointer if size > 65520 bytes 621- don't use special fcalloc for 32 bit Borland C++ 622- use STDC instead of __GO32__ to avoid redeclaring exit, calloc, etc... 623- use Z_BINARY instead of BINARY 624- document that gzclose after gzdopen will close the file 625- allow "a" as mode in gzopen. 626- fix error checking in gzread 627- allow skipping .gz extra-field on pipes 628- added reference to Perl interface in README 629- put the crc table in FAR data (I dislike more and more the medium model :) 630- added get_crc_table 631- added a dimension to all arrays (Borland C can't count). 632- workaround Borland C bug in declaration of inflate_codes_new & inflate_fast 633- guard against multiple inclusion of *.h (for precompiled header on Mac) 634- Watcom C pretends to be Microsoft C small model even in 32 bit mode. 635- don't use unsized arrays to avoid silly warnings by Visual C++: 636 warning C4746: 'inflate_mask' : unsized array treated as '__far' 637 (what's wrong with far data in far model?). 638- define enum out of inflate_blocks_state to allow compilation with C++ 639 640Changes in 0.95 (16 Aug 95) 641- fix MSDOS small and medium model (now easier to adapt to any compiler) 642- inlined send_bits 643- fix the final (:-) bug for deflate with flush (output was correct but 644 not completely flushed in rare occasions). 645- default window size is same for compression and decompression 646 (it's now sufficient to set MAX_WBITS in zconf.h). 647- voidp -> voidpf and voidnp -> voidp (for consistency with other 648 typedefs and because voidnp was not near in large model). 649 650Changes in 0.94 (13 Aug 95) 651- support MSDOS medium model 652- fix deflate with flush (could sometimes generate bad output) 653- fix deflateReset (zlib header was incorrectly suppressed) 654- added support for VMS 655- allow a compression level in gzopen() 656- gzflush now calls fflush 657- For deflate with flush, flush even if no more input is provided. 658- rename libgz.a as libz.a 659- avoid complex expression in infcodes.c triggering Turbo C bug 660- work around a problem with gcc on Alpha (in INSERT_STRING) 661- don't use inline functions (problem with some gcc versions) 662- allow renaming of Byte, uInt, etc... with #define. 663- avoid warning about (unused) pointer before start of array in deflate.c 664- avoid various warnings in gzio.c, example.c, infblock.c, adler32.c, zutil.c 665- avoid reserved word 'new' in trees.c 666 667Changes in 0.93 (25 June 95) 668- temporarily disable inline functions 669- make deflate deterministic 670- give enough lookahead for PARTIAL_FLUSH 671- Set binary mode for stdin/stdout in minigzip.c for OS/2 672- don't even use signed char in inflate (not portable enough) 673- fix inflate memory leak for segmented architectures 674 675Changes in 0.92 (3 May 95) 676- don't assume that char is signed (problem on SGI) 677- Clear bit buffer when starting a stored block 678- no memcpy on Pyramid 679- suppressed inftest.c 680- optimized fill_window, put longest_match inline for gcc 681- optimized inflate on stored blocks. 682- untabify all sources to simplify patches 683 684Changes in 0.91 (2 May 95) 685- Default MEM_LEVEL is 8 (not 9 for Unix) as documented in zlib.h 686- Document the memory requirements in zconf.h 687- added "make install" 688- fix sync search logic in inflateSync 689- deflate(Z_FULL_FLUSH) now works even if output buffer too short 690- after inflateSync, don't scare people with just "lo world" 691- added support for DJGPP 692 693Changes in 0.9 (1 May 95) 694- don't assume that zalloc clears the allocated memory (the TurboC bug 695 was Mark's bug after all :) 696- let again gzread copy uncompressed data unchanged (was working in 0.71) 697- deflate(Z_FULL_FLUSH), inflateReset and inflateSync are now fully implemented 698- added a test of inflateSync in example.c 699- moved MAX_WBITS to zconf.h because users might want to change that. 700- document explicitly that zalloc(64K) on MSDOS must return a normalized 701 pointer (zero offset) 702- added Makefiles for Microsoft C, Turbo C, Borland C++ 703- faster crc32() 704 705Changes in 0.8 (29 April 95) 706- added fast inflate (inffast.c) 707- deflate(Z_FINISH) now returns Z_STREAM_END when done. Warning: this 708 is incompatible with previous versions of zlib which returned Z_OK. 709- work around a TurboC compiler bug (bad code for b << 0, see infutil.h) 710 (actually that was not a compiler bug, see 0.81 above) 711- gzread no longer reads one extra byte in certain cases 712- In gzio destroy(), don't reference a freed structure 713- avoid many warnings for MSDOS 714- avoid the ERROR symbol which is used by MS Windows 715 716Changes in 0.71 (14 April 95) 717- Fixed more MSDOS compilation problems :( There is still a bug with 718 TurboC large model. 719 720Changes in 0.7 (14 April 95) 721- Added full inflate support. 722- Simplified the crc32() interface. The pre- and post-conditioning 723 (one's complement) is now done inside crc32(). WARNING: this is 724 incompatible with previous versions; see zlib.h for the new usage. 725 726Changes in 0.61 (12 April 95) 727- workaround for a bug in TurboC. example and minigzip now work on MSDOS. 728 729Changes in 0.6 (11 April 95) 730- added minigzip.c 731- added gzdopen to reopen a file descriptor as gzFile 732- added transparent reading of non-gziped files in gzread. 733- fixed bug in gzread (don't read crc as data) 734- fixed bug in destroy (gzio.c) (don't return Z_STREAM_END for gzclose). 735- don't allocate big arrays in the stack (for MSDOS) 736- fix some MSDOS compilation problems 737 738Changes in 0.5: 739- do real compression in deflate.c. Z_PARTIAL_FLUSH is supported but 740 not yet Z_FULL_FLUSH. 741- support decompression but only in a single step (forced Z_FINISH) 742- added opaque object for zalloc and zfree. 743- added deflateReset and inflateReset 744- added a variable zlib_version for consistency checking. 745- renamed the 'filter' parameter of deflateInit2 as 'strategy'. 746 Added Z_FILTERED and Z_HUFFMAN_ONLY constants. 747 748Changes in 0.4: 749- avoid "zip" everywhere, use zlib instead of ziplib. 750- suppress Z_BLOCK_FLUSH, interpret Z_PARTIAL_FLUSH as block flush 751 if compression method == 8. 752- added adler32 and crc32 753- renamed deflateOptions as deflateInit2, call one or the other but not both 754- added the method parameter for deflateInit2. 755- added inflateInit2 756- simplied considerably deflateInit and inflateInit by not supporting 757 user-provided history buffer. This is supported only in deflateInit2 758 and inflateInit2. 759 760Changes in 0.3: 761- prefix all macro names with Z_ 762- use Z_FINISH instead of deflateEnd to finish compression. 763- added Z_HUFFMAN_ONLY 764- added gzerror() 765