On Fri May 25 2007 Jerry DeLisle wrote: > Roland Winkler wrote: > > The (shortened) fortran-77 subroutine attached below causes a > > segmentation fault of g77 when I execute > > > > $ g77 -O3 -c -funroll-loops foo.f > > > > No problems occur without optimization. > > > > $ g77 --version > > GNU Fortran (GCC) 3.3.5 20050117 (prerelease) (SUSE Linux) > > Copyright (C) 2002 Free Software Foundation, Inc. > > > > (I have SUSE Linux 10.2) > > > > Let me know if you need to know anything else. > > > G77 is no longer maintained. The new fortran compiler is gfortran > and it supports f77 code. I will test to see if gfortran handles > your test case.
Thanks for the quick response. -- I am using precompiled libraries for which I do not have the sources (always very annoying!). That makes switching compilers more difficult. > Also, please correspond with the gfortran list on this so we > fortraners can help you here. There are gfortran binaries > available. Let me know if you need help with this. I'll take all this as an incentive to find out to what extent I can switch to gfortran. Certainly I prefer to use actively maintained software. > Also helps to know what hardware platform you are on and what OS > you are using. $ uname -a Linux tfkp07 2.6.18.8-0.1-default #1 SMP Fri Mar 2 13:51:59 UTC 2007 i686 i686 i386 GNU/Linux > I tried your test case with g77, gfortran 4.1, 4.2, and 4.3 and it > compiles fine with the options you specified. I wonder if you have > an installation problem? > > Perhaps try reinstalling g77. The last time I sent a bug report for g77 was probably 8 or 10 years ago. It has always served me very well. > Hmm, I see your g77 is 2002 vintage. I have a 3.4 version. Still, > I would recommend that you upgrade to a newer compiler, preferably > gfortran. I'll try to do that! Thank you once more, Roland
