------- Comment #5 from jakub at gcc dot gnu dot org 2008-10-22 16:28 ------- If the array has known bounds, we could say that accesses above bounds trap and likely it wouldn't hurt much. But for extern const char *reg_names[]; where we don't know the bounds, we'd have to assume the worst, i.e. that all indexes may trap. I'm afraid that's going to penalize quite some code.
-- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37889
