http://gcc.gnu.org/bugzilla/show_bug.cgi?id=61141
--- Comment #3 from John David Anglin <danglin at gcc dot gnu.org> --- (gdb) p *pass $4 = {<pass_data> = {type = RTL_PASS, name = 0x1afa7c0 "final", optinfo_flags = 0, has_execute = true, tv_id = TV_FINAL, properties_required = 0, properties_provided = 0, properties_destroyed = 0, todo_flags_start = 524288, todo_flags_finish = 0}, _vptr.opt_pass = 0x1afa758 <vtable for (anonymous namespace)::pass_final+8>, sub = 0x0, next = 0x0, static_pass_number = 251, graph_dump_initialized = false, m_ctxt = 0x1ed64f8}