On Fri, Jul 24, 2009 at 10:01:05AM +0200, Joachim Breitner wrote: >> I believe the reason Darcs' zlib dependency was bumped to 0.5.1 is >> because 0.5.0 has known problems with CRC (checksums) -- either >> generating bad ones, or failing to detect/repair bad ones. >> >> I can dig up the exact details if you want. > > Don’t worry, I believe that darcs’ dependency is there for a good > reason.
For the record, here's what Ganesh had to say about why Darcs' zlib dependency was bumped: > zlib 0.5.0.0 is not buggy. Darcs was previously buggy in that it > sometimes wrote out .gz files with bad checksums and then happily > read them back in without checking, so the bug wasn't spotted for a > long time, leaving a significant number of files in repos that had > this corrupt checksum (but were otherwise fine). zlib perfectly > legitimiately refused to read them in, making it unsuitable for use > as the default zlib binding for darcs. zlib 0.5.2.0 adds an > interface to allow clients to be informed of the broken checksums > but still continue, which darcs makes use of to warn the user to run > the new darcs gzcrcs' command to repair them. In other words, if Darcs 2.3 was built against zlib 0.5.0, it would not work with some repositories made by older Darcses. -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
