Thanks a lot John for catching this bug and helping make Ubuntu better. In the future, in order to fix regressions in a timely manner, please see this guide: https://wiki.ubuntu.com/StableReleaseUpdates#regressions
Please report bugs according to this guide to make it easier for developers to triage them: https://help.ubuntu.com/community/ReportingBugs#How_to_report_bugs -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to tiff in Ubuntu. https://bugs.launchpad.net/bugs/1670036 Title: Misapplied patches in 4.0.6-2ubuntu0.1 break reading and writing JPEG compressed files Status in LibTIFF: New Status in tiff package in Ubuntu: Invalid Status in tiff source package in Trusty: Confirmed Status in tiff source package in Xenial: Confirmed Status in tiff source package in Yakkety: Confirmed Bug description: The patches applied to libtiff 4.0.6 in 4.0.6-2ubuntu01 seem to break JPEG tiff read and write. To reproduce: $ tiffcp -c jpeg k2a.tif x.tif (where k2a.tif is a simple uncompressed RGB strip tiff) appears to work. However, x.tif, the output, will now not read without warnings: $ tiffcp x.tif y.tif TIFFFetchNormalTag: Warning, ASCII value for tag "JPEGTables" does not end in null byte. Forcing it to be null. JPEGLib: Warning, Premature end of JPEG file. This was working fine until a couple of days ago, so I guess it's one of the most recent patches. Some packages using libtiff seem to be broken too. For example, openslide, which uses libtiff to load jp2k-compressed slide images, is no longer working: $ openslide-write-png CMU-1-Small-Region.svs 0 0 0 100 100 x.png TIFFFetchNormalTag: Warning, ASCII value for tag "JPEGTables" does not end in null byte. Forcing it to be null. TIFFFetchNormalTag: Warning, ASCII value for tag "JPEGTables" does not end in null byte. Forcing it ... repeats 8 more times openslide-write-png: Premature end of JPEG file and x.png is not a valid PNG image. The test .svs image may be downloaded here: http://openslide.cs.cmu.edu/download/openslide-testdata/Aperio/ To manage notifications about this bug go to: https://bugs.launchpad.net/libtiff/+bug/1670036/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
