http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49705
--- Comment #4 from eggert at gnu dot org 2011-07-12 16:30:44 UTC --- Created attachment 24747 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=24747 longer, more-realistic test case Thanks for looking into the problem. If it helps, attached is a longer test case that more-closely corresponds to the original problem that I had with the Emacs source code.