Gerrit, The problem goes away if I either
leave the -ffast-math flag out (and remove the flags that are implicitly set by -fmath-math under the hood, i.e. -funsafe-math-optimizations and -fno-trapping-math) or leave the -mfpmath=sse flag out or turn optimization off all-together (replace -On with -g) Hope this narrows things down a bit! H. Gerrit P. Haase wrote: > Hans wrote: > >> Just to follow up on my earlier posting! > >> Could it be that I'm picking a stale g77 runtime lib? > > I don't think so, looks like a bug in the optimizer. > >> The problem doesn't happen if I replace -O6 with -g. >> It ALSO goes away (with -O6) if I call fabs() instead of abs(). >> fabs() however is a C function, which I don't want rely on! > > > There is a bug with optimization in 3.3.x. Maybe there are more bugs > in the optimizer, please try to figure out which flag triggers the > error. > >> I've attached the output of cygcheck -s -v -r, if that's of any help. -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
