http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54096
--- Comment #5 from badass at vt dot edu 2012-07-26 14:10:30 UTC --- Created attachment 27878 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27878 source code all files are modules except for prg_fwb.f90. we believe the error segmentation fault has something to do with lines 166-167 of mod_io.f90