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# IRAF 2.16.1 Snapshot
The latest official IRAF release is 2.16.1 from March 2012. Our releases are
snapshots based on the latest available source code. The snapshots are tagged
with their release date in the version number. Changes to the original 2.16.1
sources include:
* __All known non-free code removed__
Although IRAF 2.16.1 was claimed to be "free software", it contained
source code that is not freely distributable; namely code copied from the
book ["Numerical Recipes in Fortran"](http://numerical.recipes/). This
code is replaced with free equivalents. The IRAF community edition is
[Open Source](https://opensource.org/docs/osd), and as such included in
Debian.
* __Major bug fixes__
Many bugs of the 2.16.1 release are fixed. Some of he major ones are:
- Linux systems crashed with "Out of memory" (13 year old bug;
[2.12 release notes](https://github.com/iraf/iraf-v216/blob/9590f4/doc/notes.v212#L1065-L1075))
- `noao.digiphot.photcal.fitparams` failed with a segmentation
fault on 64-bit systems
([iraf.net](http://iraf.net/forum/viewtopic.php?showtopic=1467834))
- The system wide IRAF installation changed the permissions of
`/tmp/`, creating a major security hole in the system
(https://github.com/iraf/iraf-v216/issues/23)
- On Linux systems, self-compiled tasks gave wrong results
([iraf.net](http://iraf.net/forum/viewtopic.php?showtopic=1467841))
- On modern systems, background execution did not work
([iraf.net](http://iraf.net/forum/viewtopic.php?showtopic=1467431))
* __Fixes to build and run IRAF on non-historic platforms__
The original code produced errornous executables when build on Linux
versions later than 2012, due to some funny hacks in the IRAF
code. It also did not build from scratch, but required an already
compiled IRAF version.
* __VO package and vocl removed__
The VO package, and the vocl shell heavily depend on a number of
Java jars, where the creation from sources is undocumented. The
package also uses outdated VO standards. A discussion with Mike
Fitzpatrick resulted in his plan to [move the VO functionality
into an external
package](https://github.com/iraf/iraf-v216/issues/90#issuecomment-310968834).
Therefore, no attempt was put into getting these problems fixed,
and the VO stuff was cut out. The VOTable functionality, however,
remains available
* __IRAF ported to other architectures__
IRAF is now ported to a number of little endian architectures
(ARM, PowerPC, MIPS, x32) and operating systems (GNU Hurd and
FreeBSD).
* __Simple CI test framework added__
The tests are defined and documented in
[MarkDown](https://github.com/iraf-community/iraf/blob/master/test/README.md)
files. Tests are run on Travis CI on Linux and MacOS X platforms.
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