Hi, M-x version GNU Emacs 24.3.1 (x86_64-unknown-linux-gnu, GTK+ Version 3.10.2)\n of 2013-11-11 on archbox. I've compiled this myself in order to retrieve debug symbols. Hence the date. I seem to consistently be able to make emacs segfault in both the slime repl and the rgrep results window. Whenever the line is unusually long (how long? About 2-300 chars long?) and then go to the end of the line, it segfaults. I've got the gdb backtrace, which is in this link: https://gist.github.com/AeroNotix/368ada4c84e7a52f461d I've tried to trace it through but I am not familiar with this source and it's quite a length and involved file. Any help would be greatly appreciated. Aaron