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BUGS
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Editing: BUGS
Bogus bugs (not our fault!): --------------------------- By far THE BIGGEST source of bug reports to Info-ZIP/zip-bugs is the incorrect transfer of zipfiles (or of the UnZip executable itself). ALWAYS TRANSFER IN BINARY MODE! This includes ftp transfers and *both* ends of a Kermit connection ("set file type binary"). If your copy isn't exactly the same size as the original, you made a mistake. Another common source of errors such as "compression method 8 not sup- ported" is the existence of an old version of UnZip somewhere in your path. Make sure you're using the version you think you're using; give the full path explicitly if necessary. Executing "unzip" without any options will print a help screen, at the top of which is the UnZip version number and release date; and executing "unzip -v" without any zipfile or other options will give information about what compiler was used, the target operating system, any special UnZip options, and the date of compilation--only for version 5.11 and later, though! (Also, under Unix C shell and some Bourne shells, "which unzip" will print the path of the unzip you're actually using. Under OS/2 and MS-DOS, whch21gr.zip [on Simtel mirror sites] will do the same thing; in addi- tion, "which -a unzip" will show *all* copies of "unzip" in your path.) Bugs (real and/or imagined): --------------------------- - [OS/2 DLL] when trying to use the REXX function UzUnZipToStem to extract a file with `&' in its name, the DLL crashes (but UzUnZipToVar still works) [Daniel H, 961215] - UnZip has problems with archives bigger than 2GB; it may print "note: didn't find end-of-central-dir signature at end of central dir" (harmless) or may not be able to seek to member files [James Lemley 970107, Iris Spaniol 970206, ...] Fixed with Zip64 support in UnZip 6.0 - fix overwrite behavior: hidden/system problems?; etc. - 32-bit DOS UnZip still unable to set volume labels? - 32-bit DOS UnZip under OS/2 doesn't extract all wildcard zipfiles? [DOS box: unzip386 (ver 5.12) x:\32bit\unix\emx09a\*.zip, Hobbes 3/95] - 32-bit DOS UnZip under OS/2 doesn't set timestamp when overwriting files on HPFS partition? (go32 and pmode/w both; emx/rsx OK) [Eberhard Mattes 950726] - USE_FWRITE still causes occasional CRC errors when extracting on Pyramid? [Kevin Fritz 931102] - still NT/W95 bug with "unzip -v d:*.zip" not matching properly? [Steve S 940527] 980427: bug no longer exists, Opendir() must have been corrected by someone - when ^Z received in no-echo mode, echo is not restored (works OK if resume, however) - signal() handler disabled after first use with one of BSD/SysV? - MKS Korn shell: unzip assumes the MKS-style command-line environment options are relevant to it, but this is not the case if unzip was called by another program (e.g., from a .BAT file). A fix for this exists for Borland compilers but not for MSC, Watcom, djgpp, etc. - OS/2: for paths with one long component, the .LONGNAME EA may be saved for all components (waste of disk space): how to check?? - VMS: for extracting to other directories, only the VMS-style "-d [.foo]" format is accepted; "-d foo" should also be allowed. Long filenames are not automatically truncated to 39.39. - Novell Netware: Netware drives may clear the archive bit on extracted files under OS/2 and/or MS-DOS. UnZip always *tries* to set the archive bit, however. [pynq@uchicago, 940527] - DEC Ultrix: on long zipfiles, unzip will sometimes fail (bad CRC, not always reproducible); this is apparently due either to a hardware bug (cache mem) or OS bug (page faults?) [Igor, Jean-loup, bottom of BUGS.long] - funzip/more/decryption/no-echo bug: race condition(?) causes terminal to be "reset" to no-echo state - Macintosh (100200), Atari (020000) external file attributes not interpreted correctly (both unzip and zipinfo) - pkbug error: zipfile with incorrect csize and/or ucsize--check for end of compressed (csize) data in uncompression routines: unreduce.c: while (((outpos + outcnt) < ucsize) && (!zipeof)) { [James Birdsall, Mark, bottom of BUGS.long] - OS/2: directory EAs not restored if directory exists [Kai Uwe, KG27515@uark] (subsequent note: no way to determine which EAs are newer ==> cannot restore without user input) (update: as of UnZip 5.30, option -o forces restoring of directory EAs) - MS-DOS: Borland executables don't allow other than 80-column, 25/43/50-line screen modes (Borland bug) [Michael Stillwell]
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