iraf.net

NUMBER:	136
MODULE:	wfits/rfits
SYSTEM:	V2.9
DATE:	Mon Aug 27 07:37:57 MST 1990
FROM:	davis

BUG:	Wfits sometimes crashed with a segmentation violation when
	files were written with a non-standard block size (block_factor > 10).
	The error was in the code which 0-filled the unused portion of the
	last output block,  and occurred if the unused portion of that
	block was greater than 2880 bytes.

	Rfits sometimes reported read errors when it tried to read tapes
	with a non-standard block size (blocks not a multiple of 2880
	bytes). Rfits was not always counting the number of characters read
	from the tape correctly when the read attempted to cross tape record
	boundaries. Tapes with small block sizes like 512 and 1024 were
	the most affected.

STATUS:	Both bugs have been fixed in version 2.10 and the 2.9.1 patch.

NUMBER:	366
MODULE:	implot
SYSTEM:	V2.10.4 Dec Alpha OSF1
DATE:	Thu Apr  3 11:36:07 MST 1997
FROM:	valdes

BUG:	Attempting to plot a 3D image, even if the third dimension is only
	1 (i.e. [512,512,1]), results in 'ERROR: FPE' on Dec Alpha/OSF1.
	This does not occur on the Sun versions.  The workaround is
	to use an image section:

	    cl> implot im3d[*,*,1]

STATUS:	To be fixed in a future version.

NUMBER:	403
MODULE:	fixpix, ccdproc, display
SYSTEM:	V2.11-V2.11.1
DATE:	Fri Jun  5 09:45:47 MST 1998
FROM:	valdes

BUG:	When fixing regions by interpolation along columns/across lines,
	which may be set by the user or automatically by finding the
	narrowest direction across a region of bad pixels, it is possible
	to get a segmentation error or error related to referencing invalid
	memory.  Whether this error occurs depends on the contents
	of memory.  If no error occurs the result is correct.

	One workaround is to use only interpolation across columns/along
	lines if this makes sense.  Another workaround is to add a dummy
	region with interpolation along columns covering all the columns.
	For example the first or last line as in '1 3072 1 1' for an image
	with 3072 columns.  It is also possible to break up the operation
	in FIXPIX using multiple passes.  For example if a bad pixel region
	is described by the rectangle '2000 3024 510 512' then two passes
	using '2000 2500 510 512' and '2500 3024 510 512' may work.

STATUS:	Fixed in the next release.

NUMBER:	512
MODULE:	imcombine, mscred.combine (and related combine scripts)
SYSTEM:	V2.12, MSCRED V4.7
DATE:	Fri Oct 25 09:50:21 MST 2002
FROM:	valdes

BUG:	The log output from the combining when using masks will incorrectly
	show all the images using the same mask (the one for the last image).
	This is an error in the output formating and the correct masks will
	actually be used.  There is no workaround other than to ignore
	the incorrect output.

STATUS:	This is fixed in V2.12.1 and will be fixed in the next release
	of MSCRED.