iraf.net

NUMBER:	248
MODULE:	image.imcombine,ccdred.combine,onedspec.scombine
SYSTEM:	V2.10.2
DATE:	Mon Jun 13 18:50:46 MST 1994
FROM:	valdes

BUG:	When the rejection algorithm is avsigclip, sigclip, avsigclip, or
	crreject and mclip=no and nkeep is not zero there is the rare
	possibility of a segmentation violation.  This occurs when more
	than the maximum number of pixels is rejected and several of the
	rejected pixels have the same residual relative to the average.
	The workarounds are to reduce nkeep (possibly to zero), use
	mclip=yes, use another rejection algorithm, or adjust the sigma
	values.

STATUS:	This problem is fixed for V2.11.