All right. It looks like we should try to get a useful backtrace with debugging symbols. Can you follow the procedure listed in https://help.ubuntu.com/community/DebuggingProgramCrash to build a debugging version of w3m?
Your backtrace using that version should be more enlightening. -- segfault for https+unknown domain https://launchpad.net/bugs/57188 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs