1Bogus bugs (not our fault!): 2--------------------------- 3 4 By far THE BIGGEST source of bug reports to Info-ZIP/zip-bugs is the 5 incorrect transfer of zipfiles (or of the UnZip executable itself). 6 ALWAYS TRANSFER IN BINARY MODE! This includes ftp transfers and *both* 7 ends of a Kermit connection ("set file type binary"). If your copy 8 isn't exactly the same size as the original, you made a mistake. 9 10 Another common source of errors such as "compression method 8 not sup- 11 ported" is the existence of an old version of UnZip somewhere in your 12 path. Make sure you're using the version you think you're using; give 13 the full path explicitly if necessary. Executing "unzip" without any 14 options will print a help screen, at the top of which is the UnZip 15 version number and release date; and executing "unzip -v" without any 16 zipfile or other options will give information about what compiler was 17 used, the target operating system, any special UnZip options, and the 18 date of compilation--only for version 5.11 and later, though! (Also, 19 under Unix C shell and some Bourne shells, "which unzip" will print 20 the path of the unzip you're actually using. Under OS/2 and MS-DOS, 21 whch21gr.zip [on Simtel mirror sites] will do the same thing; in addi- 22 tion, "which -a unzip" will show *all* copies of "unzip" in your path.) 23 24 25Bugs (real and/or imagined): 26--------------------------- 27 28 - [OS/2 DLL] when trying to use the REXX function UzUnZipToStem to extract a 29 file with `&' in its name, the DLL crashes (but UzUnZipToVar still works) 30 [Daniel H, 961215] 31 - UnZip has problems with archives bigger than 2GB; it may print "note: didn't 32 find end-of-central-dir signature at end of central dir" (harmless) or 33 may not be able to seek to member files [James Lemley 970107, Iris Spaniol 34 970206, ...] 35 36 - fix overwrite behavior: hidden/system problems?; etc. 37 - 32-bit DOS UnZip still unable to set volume labels? 38 - 32-bit DOS UnZip under OS/2 doesn't extract all wildcard zipfiles? 39 [DOS box: unzip386 (ver 5.12) x:\32bit\unix\emx09a\*.zip, Hobbes 3/95] 40 - 32-bit DOS UnZip under OS/2 doesn't set timestamp when overwriting files 41 on HPFS partition? (go32 and pmode/w both; emx/rsx OK) [Eberhard Mattes 42 950726] 43 - USE_FWRITE still causes occasional CRC errors when extracting on Pyramid? 44 [Kevin Fritz 931102] 45 - still NT/W95 bug with "unzip -v d:*.zip" not matching properly? [Steve S 46 940527] 47 980427: bug no longer exists, Opendir() must have been corrected by someone 48 49 - when ^Z received in no-echo mode, echo is not restored (works OK if 50 resume, however) 51 - signal() handler disabled after first use with one of BSD/SysV? 52 - MKS Korn shell: unzip assumes the MKS-style command-line environment 53 options are relevant to it, but this is not the case if unzip was called 54 by another program (e.g., from a .BAT file). A fix for this exists for 55 Borland compilers but not for MSC, Watcom, djgpp, etc. 56 - OS/2: for paths with one long component, the .LONGNAME EA may be saved for 57 all components (waste of disk space): how to check?? 58 - VMS: for extracting to other directories, only the VMS-style "-d [.foo]" 59 format is accepted; "-d foo" should also be allowed. Long filenames are 60 not automatically truncated to 39.39. 61 - Novell Netware: Netware drives may clear the archive bit on extracted 62 files under OS/2 and/or MS-DOS. UnZip always *tries* to set the archive 63 bit, however. [pynq@uchicago, 940527] 64 - DEC Ultrix: on long zipfiles, unzip will sometimes fail (bad CRC, not always 65 reproducible); this is apparently due either to a hardware bug (cache mem) 66 or OS bug (page faults?) [Igor, Jean-loup, bottom of BUGS.long] 67 - funzip/more/decryption/no-echo bug: race condition(?) causes terminal to 68 be "reset" to no-echo state 69 - Macintosh (100200), Atari (020000) external file attributes not interpreted 70 correctly (both unzip and zipinfo) 71 - pkbug error: zipfile with incorrect csize and/or ucsize--check for end of 72 compressed (csize) data in uncompression routines: 73 unreduce.c: while (((outpos + outcnt) < ucsize) && (!zipeof)) { 74 [James Birdsall, Mark, bottom of BUGS.long] 75 - OS/2: directory EAs not restored if directory exists [Kai Uwe, KG27515@uark] 76 (subsequent note: no way to determine which EAs are newer ==> cannot 77 restore without user input) 78 (update: as of UnZip 5.30, option -o forces restoring of directory EAs) 79 - MS-DOS: Borland executables don't allow other than 80-column, 25/43/50-line 80 screen modes (Borland bug) [Michael Stillwell] 81