http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50686
--- Comment #19 from Bernd Schmidt <bernds at gcc dot gnu.org> 2011-10-24 12:10:21 UTC --- It's really hard to run a gdb session this way. You're not a gcc newbie, and you're the only one with an IRIX machine - can you not debug a bit further from where we are now? You'll have to figure out why we get to that point twice with the same data - this is making no sense to me. Check whether it's the same loop, or (unlikely) two calls to connect_traces. If it's the same loop, what are the indices? What's the contentes of the VEC? etc.