diff options
Diffstat (limited to 'FAQ')
| -rw-r--r-- | FAQ | 40 |
1 files changed, 31 insertions, 9 deletions
@@ -77,7 +77,7 @@ The lastest zlib FAQ is at http://www.gzip.org/zlib/zlib_faq.html 11. Can zlib handle .zip archives? - Not by itself, no. See the directory contrib/minizip in the zlib + Not by itself, no. See the directory contrib/minizip in the zlib distribution. 12. Can zlib handle .Z files? @@ -217,10 +217,14 @@ The lastest zlib FAQ is at http://www.gzip.org/zlib/zlib_faq.html 29. Does zlib work on MVS, OS/390, CICS, etc.? - We don't know for sure. We have heard occasional reports of success on - these systems. If you do use it on one of these, please provide us with - a report, instructions, and patches that we can reference when we get - these questions. Thanks. + Yes, there are working ports of zlib 1.1.4 to MVS which you can find + here: + + http://www.homerow.net/asm/zlib390.htm + http://www.homerow.net/asm/zlibLE.htm + + If these are updated to more recent versions of zlib, please let us + know. Thanks. 30. Is there some simpler, easier to read version of inflate I can look at to understand the deflate format? @@ -271,7 +275,9 @@ The lastest zlib FAQ is at http://www.gzip.org/zlib/zlib_faq.html http://www.ijs.si/software/snprintf/ Note that you should be using the most recent version of zlib. Versions - 1.1.3 and before were subject to a double-free vulnerability. + 1.1.3 and before were subject to a double-free vulnerability, and version + 1.2.1 was subject to an access exception when decompressing invalid + compressed data. 34. Is there a Java version of zlib? @@ -292,8 +298,8 @@ The lastest zlib FAQ is at http://www.gzip.org/zlib/zlib_faq.html performing a conditional jump that depends on an uninitialized value. Isn't that a bug? - No. That is intentional for performance reasons, and the output of - deflate is not affected. This only started showing up recently since + No. That is intentional for performance reasons, and the output of + deflate is not affected. This only started showing up recently since zlib 1.2.x uses malloc() by default for allocations, whereas earlier versions used calloc(), which zeros out the allocated memory. @@ -333,7 +339,23 @@ The lastest zlib FAQ is at http://www.gzip.org/zlib/zlib_faq.html In any case, the compression improvements are so modest compared to other more modern approaches, that it's not worth the effort to implement. -41. Can you please sign these lengthy legal documents and fax them back to us +41. I'm having a problem with the zip functions in zlib, can you help? + + There are no zip functions in zlib. You are probably using minizip by + Giles Vollant, which is found in the contrib directory of zlib. It is not + part of zlib. In fact none of the stuff in contrib is part of zlib. The + files in there are not supported by the zlib authors. You need to contact + the authors of the contribution for help. + +42. The match.asm code in contrib is under the GNU General Public License. + Since it's part of zlib, doesn't that mean that all of zlib falls under the + GNU GPL? + + No. The files in contrib are not part of zlib. They were contributed by + other authors and are provided as a convenience to the user within the zlib + distribution. Each of the items in contrib have their own license. + +43. Can you please sign these lengthy legal documents and fax them back to us so that we can use your software in our product? No. Go away. Shoo. |