victor shoup wrote:

Don't worry about the version number issue.

OK.

I haven't seen the problem with the "subset" program before. It should terminate in a few seconds.

The code associated with that program hasn't changed for years. It looks like you are using a pretty "bleeding edge" version of gcc. I suspect it could be some kind of issue with floating point arithmetic...possibly a bug in the compiler, or possibly the NTL code makes an assumption about code generation that is not strictly "legal" somehow.

If you have access to an older version of gcc, try that. Also, try compiling without optimization...the quickest way to do this in this case: 1) edit makefile, and delete -O2 from the compiling options (should be obvious where this is). 2) touch LLL_FP.c (that should be the file causing the problem) 3) make ntl.a (should cause just LLL_FP.c to be recompiled) 4) make check (try again)

Let me know what happens....even if this is a gcc bug, I should try to find a work-around.

I have replaced "-O2" by "-g" in `makefile', but recompiling LLL_FP.c only did not fix the problem. However, by rebuilding the entire library with "-g" instead of "-O2", `make check' terminates successfully. Please let me know if I can do more to help you trace the problem. All the best, Roberto -- Prof. Roberto Bagnara Computer Science Group Department of Mathematics, University of Parma, Italy http://www.cs.unipr.it/~bagnara/ mailto:bagnara@cs.unipr.it