Hi to all in Hugs-land. This bug report concerns the generation of heap profiling data by Hugs98 (Feb 2000). In the middle of valid data in the .hp file, there are interspersed invalid items, e.g. foldr 17 or 2 v141 3 Undefined member: member: 1 getArgs 2 FilePos 6 It looks like some error message from a printing routine is being included by mistake. The graph-producing tool hp2ps complains hp2ps: profile.hp, line 57: integer must follow identifier If you need a test program to reproduce the problem, I can supply one. I was using 'hugs -98 -d200' as a command-line. Regards, Malcolm ----------------------------------------- Malcolm.Wallace@cs.york.ac.uk Dr Malcolm Wallace (functional programming research) +44 1904 434756 Department of Computer Science, University of York, YORK YO10 5DD, U.K.