http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50743
--- Comment #1 from Mikael Pettersson <mikpe at it dot uu.se> 2011-10-16 10:50:19 UTC --- Created attachment 25515 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25515 preliminary patch Casting the value of TREE_VEC_LENGTH to size_t before comparing it with a size_t index fixes the issue for me on i686-linux.